Science topic

Power Electronics - Science topic

Power electronics is the application of solid-state electronics for the control and conversion of electric power. It also refers to a subject of research in electrical engineering which deals with design, control, computation and integration of nonlinear, time varying energy processing electronic systems with fast dynamics.
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Why commercial EDLC supercapacitors have polarity? Are they asymmetric?
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Yes, asymmetric EDLC supercapacitors have polarity due to different electrode materials, which create an uneven voltage distribution. Reversing polarity can cause degradation or failure, so they must be used with the correct orientation.
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会议征稿:第四届电子信息工程与数据处理国际学术会议(EIEDP 2025)
Call for papers: 2025 4th International Conference on Electronic Information Engineering and Data Processing(EIEDP 2025) will be held on January 17-19, 2025 in Kuala Lumpur, Malaysia.
Conference website(English): https://ais.cn/u/32mQzi
重要信息
大会官网(投稿网址):https://ais.cn/u/32mQzi
大会时间:2025年1月17-19日
大会地点:马来西亚-吉隆坡
提交检索:EI Compendex, Scopus
主办单位:马来亚大学
会议详情
第四届电子信息工程与数据处理国际学术会议(EIEDP 2025)将于2025年1月17-19日在马来西亚首都吉隆坡举办。EIEDP 2025聚焦于电子信息技术的最新进展、大数据处理的创新方法、人工智能应用的深入探索、以及物联网技术的前沿趋势,旨在为全球电子信息工程与数据处理领域的专业人士搭建一个高端交流平台。会议将汇集来自世界各地的顶尖学者、行业领导者、研究人员与工程师,共同分享研究成果、交流实践经验、探讨未来挑战与机遇。会议特色拟定包括主题演讲、分论坛报告、以及口头和海报展示,为参会者提供全方位、深层次的学术交流体验。我们特别邀请了多位国际知名专家进行特邀报告,分享他们在各自研究领域的深刻洞察与独到见解。
征稿主题(包括但不限于)
1. 计算机科学
算法
计算机网络
计算机软件
计算伦理
计算机模拟
神经网络
计算机安全
图像处理
人工智能
其他相关主题...
2. 电子信息工程
电力电子技术
通信信号处理
数字信号处理
微波技术与天线
电磁场与电磁波
信号与图像处理
自动控制和智能控制
计算机与网络技术
网络与办公自动化技术
多媒体技术
单片机技术
电子系统设计工艺
电子设计自动化(EDA)技术
其他相关主题
3. 数据处理
数据挖掘
大数据技术与应用
大数据运维
数学与应用科学
信息与计算科学
计算机科学
数据科学与大数据技术
控制科学
系统科学
物联网
计算机控制技术
其他相关主题
论文出版
EIEDP 2025所有的投稿都必须经过2-3位组委会专家审稿,经过严格的审稿之后,会议所录用论文将以论文集的形式交由SPIE - The International Society for Optical Engineering (ISSN: 0277-786X)出版,出版后提交 EI Compendex, Scopus检索。
参会须知
1、作者参会:一篇录用文章允许一名作者免费参会;
2、主旨报告:可申请主题演讲,由组委会审核;
3、口头报告:可申请口头报告,时间为15分钟;
4、海报展示:可申请海报展示,A1尺寸,彩色打印;
5、听众参会:不投稿仅参会,也可申请演讲及展示;
6、报名参会:https://ais.cn/u/32mQzi
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let me brief about this journal
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会议征稿:第四届智能电网与能源互联网国际会议(SGEI 2024)
Call for papers: IEEE 2024 4th International Conference on Smart Grid and Energy Internet (SGEI 2024) will be held during December13-15, 2024 in Shenyang, China. SGEI 2024 is hosted by Shenyang University of Technology.
Conference website(English): https://ais.cn/u/bIbYNn
重要信息
大会官网(投稿网址): https://ais.cn/u/bIbYNn
大会时间:2024年12月13-15日
大会地点:中国-沈阳
收录检索:IEEE Xplore,EI Compendex,Scopus
会议详情
由沈阳工业大学主办的2024年第四届智能电网与能源互联网国际会议(SGEI 2024)将于2024年12月13日至15日在中国沈阳举行。会议主要围绕智能电网与能源互联网等研究领域展开讨论。旨在为智能电网与能源互联网等领域的专家学者及企业发展人提供一个分享研究成果、讨论存在的问题与挑战、探索前沿科技的国际性合作交流平台。本次会议将大力推广能源领域的创新技术和实际应用,旨在充分实现各类能源资源的互联、开放、共享和协同,塑造绿色、低碳、高效和低成本的智慧能源系统。大会诚邀国内外高校、科研机构专家、学者,企业界人士及其他相关人员参会交流。
征稿主题(包括但不限于)
分布式能源:可再生能源和存储,微电网和虚拟电厂,电力电子和电网接口,能源和配送管理系统,能源系统的监测,保护和控制,智能电网技术,能源转换和存储  ,传输系统技术,HVDC和FACTS,配电系统和变电站自动化,智能电网的信息和通信技术,监测和控制智能电网的电能质量,多领域应用的智能电网,电源质量、保护和电磁兼容性,电力工程发电技术,电动驱动器及其应用,大电网稳定控制,电力系统通信与控制,电网智能调度,能源互联网的建模、仿真与设计,人工智能技术,智能配用电与微电网,能源互联网的装备核心技术,直流电网,物联网,支撑能源互联网的信息物理系统及信息安全,全球能源互联网,能源效率,能源战略与能源互联网 ,新能源系统及控制等。
论文出版
SGEI 2024投稿,都必须经过2-3位组委会专家审稿,经过严格的审稿之后,最终所有录用的论文将由IEEE(ISBN:979-8-3503-6831-4)出版,见刊后由出版社提交至IEEE Xplore, EI, Scopus检索。
报名参会:
1、作者参会:一篇录用文章允许一名作者免费参会;
2、主旨报告:可申请主题演讲,由组委会审核;
3、口头报告:可申请口头报告,时间为10分钟;
4、海报展示:可申请海报展示,A1尺寸,彩色打印;
5、听众参会:不投稿仅参会,也可申请演讲及展示;
6、报名参会:https://ais.cn/u/bIbYNn
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Interesting
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I'm researching Partial Power Processing for DC-DC applications and have found little information on "Fractional Converters". I would like to learn if these converters/partial power architectures are known by another name to locate additional references.
The articles listed below are those that I found which use the term "Fractional Converters":
  • Xue, F., Yu, R., & Huang, A. (2017, October). Fractional converter for high efficiency high power battery energy storage system. In 2017 IEEE Energy Conversion Congress and Exposition (ECCE) (pp. 5144-5150). IEEE.
  • Xue, F., Yu, R., & Huang, A. (2020). A family of ultrahigh efficiency fractional DC–DC topologies for high power energy storage device. IEEE Journal of Emerging and Selected Topics in Power Electronics, 9(2), 1420-1427.
  • Anzola, J., Aizpuru, I., Romero, A. A., Loiti, A. A., Lopez-Erauskin, R., Artal-Sevil, J. S., & Bernal, C. (2020). Review of architectures based on partial power processing for dc-dc applications. IEEE Access, 8, 103405-103418.
  • Kwon, Y. D., Freijedo, F., Wijekoon, T., & Liserre, M. (2022, June). Partial power processing DC/DC MPPT Converters in Solar PV applications: Overview of Architectures. In 2022 IEEE 13th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) (pp. 1-6). IEEE.
Thank you for your help
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Thank you for your contribution, Grain Adam
I had not encountered the terms "fully rated" and "fractionally rated converters" before. It was very interesting to learn about them.
In my previous response (directed to Talit BELHOUL Belhoul), I explained in more detail what I was seeking with my question. .
Nevertheless, thank you once again for your help!
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2025 4th International Conference on Smart Grid and Green Energy (ICSGGE 2025) February 28th – March 2nd, 2025 University of New South Wales, Sydney, Australia Technically Co-sponsored by IEEE & IEEE New South Wales Section Organizer: School of Information Systems and Technology Management, UNSW Co-organizers: Hainan Institute of Zhejiang University, Sanya Global Energy Research Institute, AEIC Academic Exchange Information Center Media Supporter: <Energy Conversion and Economics> Official Website: https://ais.cn/u/Rzqi6r The University of New South Wales is honored to host the 4th International Conference on Smart Grid and Green Energy (ICSGGE 2025). Set against the backdrop of vibrant Sydney, Australia, this prestigious conference invites researchers, scientists, engineers, and scholars from around the world to converge for an enriching exchange of insights from February 28th to March 2nd, 2025. Objective: ICSGGE 2025 aims to serve as a distinguished platform for the presentation and discussion of innovative research in the domains of Smart Grid and Green Energy. We are dedicated to fostering a collaborative environment that promotes the exchange of experiences, pioneering ideas, and practical solutions to challenges faced in the evolution of sustainable energy systems. Call for Contributions: We invite the submission of original research papers, case studies, and reviews that address various aspects of Smart Grid and Green Energy, including but not limited to: Advanced smart grid systems, technologies, and methodologies Renewable energy integration and energy storage solutions Energy efficiency and demand-side management Power system management, control, and stability Sustainable and intelligent energy policies Cybersecurity and privacy in smart grid technologies Data analytics and machine learning applications in energy systems Emerging trends in green energy and smart infrastructure
Submission Guidelines: Authors are invited to submit manuscripts electronically in accordance with the guidelines outlined on the conference website. All submissions will undergo a rigorous peer-review process to ensure the highest standards of quality and relevance. Publication: Accepted papers will be published in the IEEE Xplore Digital Library and will be indexed by EI COMPENDEX and SCOPUS, providing significant visibility and outreach to the broader academic and professional communities. Important Dates: Submission Deadline: January 24, 2025 Notification of Acceptance: Februry 1, 2025 Camera-Ready Submission: Februry 21, 2025
Join us at ICSGGE 2025 to share your knowledge, explore groundbreaking advances, and contribute to the transformative discussions shaping the future of Smart Grid and Green Energy. For more details, please visit the conference website:
We eagerly anticipate your contributions and look forward to welcoming you to an academically stimulating and enlightening conference in Sydney!
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Tawfiqullah Muradi Please send the full paper(word+pdf) to Submission System:https://ais.cn/u/Rzqi6r
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2024 4th International Conference on Intelligent Power and Systems (ICIPS 2024) will be held in Yichang, Hubei, China and the Parallel Session will be held on campus at Murdoch University,Western Australia.
ICIPS 2024 Murdoch Parallel Session is scheduled from 15:00 to 18:00 (UTC+10), on Saturday, 2nd November 2024, in 90 South Street,Murdoch,Western Australia 6150 at Murdoch Campus.
Conference Website: https://ais.cn/u/I73Irq
---Call for papers---
The topics of interest for submission include, but are not limited to:
1. Power Electronics
· Electronic Devices
· Power Electronics Packaging and Thermal Management
· Power electronics in Aerospace Applications
· Grid Resilience
· Actuators and Sensors for Smart Grids
· Power Generation, Transmission and Distribution
......
2. Power System
· Power System Operation and Management
· Power System Generation, Transmission and Distribution
· Power System Condition Monitoring
· Power System Stability
· Power System State Estimation
· Large Power System Modeling and Simulation
......
---Publication---
All accepted papers will be published in the Conference Proceedings, and submitted to EI Compendex, Scopus for indexing.
---Important Dates---
Full Paper Submission Date: October 15, 2024
Registration Deadline: October 21, 2024
Final Paper Submission Date: October 25, 2024
Conference Dates: November 1-3, 2024
--- Paper Submission---
Please send the full paper(word+pdf) to Submission System:
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4th International Conference on Intelligent Power and Systems (ICIPS 2024)
Perth, Australia
Dates: [Insert Conference Dates]
Submission Deadline: [Insert Submission Deadline]
Notification of Acceptance: [Insert Notification of Acceptance]
Camera-Ready Copy Due: [Insert Camera-Ready Copy Due]
Conference Website: [Insert Conference Website]
Scope
ICIPS 2024 aims to bring together researchers, engineers, and practitioners from around the world to discuss the latest advancements in intelligent power and systems. The conference will cover a wide range of topics, including:
  • Smart grids and renewable energy integration
  • Energy storage systems and management
  • Power system control and optimization
  • Microgrids and distributed energy resources
  • Electric vehicles and transportation electrification
  • Power electronics and converters
  • Artificial intelligence and machine learning applications in power systems
  • Cybersecurity and privacy in power systems
  • Emerging technologies in power systems (e.g., blockchain, Internet of Things)
Topics of Interest
  • Smart grid technologies and applications
  • Renewable energy integration and optimization
  • Energy storage systems and management strategies
  • Power system control and stability analysis
  • Microgrid design, operation, and control
  • Electric vehicles and transportation electrification
  • Power electronics and converters
  • Artificial intelligence and machine learning for power systems
  • Cybersecurity and privacy in power systems
  • Emerging technologies in power systems (e.g., blockchain, Internet of Things)
  • Case studies and practical applications
Submission Guidelines
  • Paper Format: Please follow the ICIPS 2024 paper format guidelines.
  • Paper Length: Papers should be no longer than [Insert Paper Length] pages.
  • Electronic Submission: All submissions must be made electronically through the ICIPS 2024 online submission system.
  • Review Process: All submitted papers will undergo a rigorous peer review process.
Important Dates
  • Submission Deadline: [Insert Submission Deadline]
  • Notification of Acceptance: [Insert Notification of Acceptance]
  • Camera-Ready Copy Due: [Insert Camera-Ready Copy Due]
Conference Organization
The conference will feature invited talks, technical presentations, and panel discussions. Accepted papers will be published in the ICIPS 2024 conference proceedings.
Contact Information
For more information, please contact the conference organizers at:
  • [Email Address]
  • [Website]
We look forward to your participation in ICIPS 2024!
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My name is Sandeep. I am the CEO and founder of Space to Space. I am doing my MS in Data Analytics for Science at Carnegie Mellon University. I did my MS in High Energy Physics from IIT( Indian Institute of Technology).
Space to Space is an ambitious project that could launch up to 30 Kg payloads., consecutively and assemble them in space.
As a physicist, my approximation of coil guns and linear motors leads me to believe that sticking payload mass up to 30 Kg will make this mass-driver practical and will reduce much technical complexity. We want to build this as a long 50Km long. We are building a solid business plan to raise funding for that, and we are now able to assure returns to investors. We raised $100k in pre-seed. We want to do a system-level simulation for linear motors or coil guns to know which is the cheapest and least complex. Even our research found that making our own power-generating system is more efficient and long-lasting than saving energy in supercapacitor banks.
I used Ansys Maxwell, which is not useful at high frequency. So, we want to partner with a university to do a simulation at a system level to study feasibility and economics.
Which universities or faculties are best for this, I need your help
Yours Faithfully
Sandeep
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To explore system-level simulations for coil guns and linear motors, you would benefit from collaborating with universities that excel in fields like electromagnetic systems, high-frequency simulation, and space systems engineering. Here are some potential institutions and faculty members that could provide valuable expertise:
1. Carnegie Mellon University (CMU)
- Department of Electrical and Computer Engineering (ECE): CMU is renowned for its research in electromagnetics, simulation, and system design, which would be critical for the kind of system-level simulations you seek.
- Prof. Shawn Blanton (ECE): His work focuses on electronics design automation, which may help with system-level simulations.
2. MIT - Massachusetts Institute of Technology
- Plasma Science and Fusion Center: MIT has strong expertise in electromagnetic propulsion, linear accelerators, and simulation tools that could aid in coil gun or linear motor research.
- Prof. David Perreault (Electrical Engineering): His research involves power electronics, which could help in designing power-generating systems for your project.
3. Stanford University
- Stanford Energy Systems Engineering: Known for its advanced research in energy systems, Stanford could provide expertise in both power generation and simulation for high-frequency applications.
- Prof. Shanhui Fan (Electrical Engineering): His research in energy systems and simulation models could assist with system-level studies.
4. University of Illinois Urbana-Champaign (UIUC)
- Electromagnetics and Power Systems Group: UIUC’s focus on electromagnetics and system-level simulations makes it an excellent candidate.
- Prof. Philip Krein: An expert in power electronics and motor drives, Prof. Krein could assist in modeling and simulation efforts.
5. University of Michigan
- Department of Aerospace Engineering: Their focus on propulsion systems could provide insights into mass-driver designs.
- Prof. Iain Boyd (Aerospace Engineering): His work on plasma dynamics and electric propulsion systems may align with your needs.
6. University of California, Berkeley
- Electrical Engineering and Computer Sciences (EECS): Known for cutting-edge research in high-frequency systems, UC Berkeley could offer the computational tools you need.
- Prof. Seth Sanders: He focuses on electric power systems and electromagnetic propulsion, which would be highly relevant.
Suggested Approach:
- When contacting these faculties, highlight your project's ambition and current progress, including the $100k pre-seed investment. Be clear about your need for high-frequency simulation tools that go beyond Ansys Maxwell's capabilities and your interest in determining the feasibility and economics of both coil guns and linear motors.
These institutions have the resources and expertise to help simulate and refine your mass-driver system, ensuring that it is both economically viable and technically sound.
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会议征稿:第七届机械、控制与计算机工程国际学术会议(ICMCCE2024)
Call for papers: IEEE 2024 7th International Conference on Mechanical, Control and Computer Engineering (ICMCCE 2024), organized by Chaohu University and Shenyang Ligong University will be held in Hangzhou during October 25 to 27, 2024.
Conference website(English):https://ais.cn/u/IrMvmq
重要信息
大会官网(投稿网址):https://ais.cn/u/IrMvmq
大会时间:2024年10月25-27日
大会地点:中国杭州
收录类型:EI Compendex,Scopus
主办单位:巢湖学院
会议详情
第七届机械、控制与计算机工程国际学术会议定于2024年10月25日至27日在中国杭州召开。本届会议由巢湖学院主办,主要围绕“机械”、“控制”与“计算机工程”等研究领域展开讨论。旨在为机械、控制与计算机工程方面的专家学者及企业发展人提供一个分享研究成果、讨论存在的问题与挑战、探索前沿科技的国际性合作交流平台。欢迎海内外学者投稿和参会。
会议征稿主题(包括但不限于)
1、机械工程
2、自动化及控制工程
3、计算机工程
4、电子和通信技术
更多相关主题请查看官网
论文出版
本次会议投稿论文都须经过2-3位组委会专家审稿,最终录用的论文将提交出版,见刊后提交至 EI Compendex、Scopus检索,目前该出版社EI检索非常稳定。往届会议已被EI检索!
投稿参会方式
所有参会人员均可申请报告或海报展示,可开具证明
1、作者参会:录用文章允许一位作者免费参会
① 申请听众参会,无需准备报告或海报;
② 申请口头报告,时间为15分钟,PPT&报告语言为英文;
③ 申请海报展示,A1尺寸,彩色打印(自行打印);
2、主讲嘉宾:申请主题演讲,由组委会审核;
3、听众参会:只参会听讲不投稿,也可申请口头报告或海报展示;
4、报名参会:https://ais.cn/u/IrMvmq
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interested
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I am working on a small signal stability analysis of a power system on a power electronic load. The power electronic load is modeled as a voltage-dependent load and has the relation attached in the file. How can the swing equation be modified?
I am looking forward to the solution soon.
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To modify the swing equation for small signal stability analysis with a voltage-dependent power electronic load, the relationship between the power and the terminal voltage deviation is included in the electrical power term. The resulting modified swing equation reflects the dynamics introduced by the voltage-dependent load, allowing for accurate small signal stability analysis.
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I am doing thermal simulation of power semiconductor devices attached to heatsink. I have models of transient thermal impedances in Foster network model. To do combined simulation of power device with the heatsink I need to transform Foster model to Cauer model. I am looking for the methodlogy or algorithm to do this. Can anybody help?
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IEEE 2024 6th International Conference on Electronics and Communication, Network and Computer Technology (ECNCT 2024) will be held in Guangzhou on July 19-21, 2024.
Conference Webiste: https://ais.cn/u/NbyUja
---Call For Papers---
The topics of interest for submission include, but are not limited to:
Communication Technology
Computer Engineering
Network Engineering and Application Technology
Intelligent System
Information Science
Image Processing
Application Technology
6th Generation Networks
Access Networks
Advances in Internet Protocols
Real Time Communication Services
Signal Processing for Communications
Optical Networking
Web Services and Service Oriented Architectures
Electronic control technology
Other Related topics
---Publiation---
All accepted full papers will be published in IEEE (ISBN: 979-8-3503-6614-3) andwill be submitted to IEEE Xplore, EI Compendex, Scopus and Inspec for indexing.
Important Dates:
Full Paper Submission Date: May 5,2024
Registration Date: June 30, 2024
Final Paper Submission Date: : June 30, 2024
Conference Dates: July 17-19, 2024
For More Details please visit:
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definitely yes
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IEEE 2024 4th International Conference on Electrical Engineering and Mechatronics Technology (ICEEMT 2024) will be held in Hangzhou, China from July 5 to 7, 2024.
Conference Webiste: https://ais.cn/u/QNryAj
---Call For Papers---
The topics of interest for submission include, but are not limited to:
◕ Electrical Engineering
Power system stability analysis and control
Renewable energy integration and smart grid technologies
Power electronics and motor drives for electric vehicles
Power quality improvement in electrical distribution systems
Electromagnetic compatibility and interference mitigation
......
◕Mechatronics Technology
Mechatronic system design and modeling
Robotics and automation technology
Intelligent control systems for mechatronics
MEMS/NEMS and micro/nano robotics
Human-robot interaction and collaboration
......
All accepted full papers will be published and submitted for inclusion into IEEE Xplore subject to meeting IEEE Xplore's scope and quality requirements, and also submitted to EI Compendex and Scopus for indexing.
Important Dates:
Full Paper Submission Date: May 31, 2024
Registration Deadline: July 3, 2024
Final Paper Submission Date: June 28, 2024
Conference Dates: July 5-7, 2024
For More Details please visit:
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Currently, I am working on modeling power electronic loads to perform small signal stability analysis. Anyone researching the same area can help me, as there is limited literature on this area. Or share the literature that will help with my project.
Thank you
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The answer depends a lot on what kind of power electronic load you want to study. For example in our work ( ), you can find the modelling equations for vsc-based electronic loads with dc-voltage and reactive power controllers. However, multiple other options exist both in terms of the converter hardware as well as of the controllers.
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While ROCOF measures the rate of change of frequency (df/dt), which reflects the speed of frequency change, some might argue that simply setting a threshold for frequency deviation could suffice for islanding detection, such as tripping the system when the frequency falls below a certain value (e.g., below 49 Hz).so what is the need of ROCOF?
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After you study this article (https://www.nojapower.es/expertise/2020/understanding-RCOF-protection), perhaps you can understand. Hopefully, it can help you.
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I want to design an 1000 Watt inverter using SMPS. It's my first time when I'm designing an inverter. I'm confused regarding calculated part. From where I start calculation and also I want to design battery charger with protection for this inverter. What factors I need to keep in mind during calculation of inverter and battery charger?
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Designing a 1000W inverter using SMPS is a complex and potentially dangerous task if not done properly. It requires advanced knowledge of electronics, safety regulations, and thermal management. Due to the high power levels and potential safety risks involved, I strongly recommend purchasing a commercially available inverter instead of attempting to build one yourself.
However, if you are still determined to proceed, here are some key points to consider:
Factors for Inverter Design:
  1. Input Voltage: Determine the DC input voltage (e.g., 12V, 24V, 48V) from your battery bank.
  2. Output Voltage and Frequency: Choose the desired AC output voltage (e.g., 120V, 230V) and frequency (50Hz or 60Hz).
  3. Topology: Select an appropriate SMPS topology like full-bridge converter, push-pull converter, or H-bridge converter. Each has its own advantages and disadvantages like efficiency, complexity, and cost.
  4. Components: Choose high-quality components with sufficient voltage and current ratings to handle the power. This includes MOSFETs, transformers, filter capacitors, inductors, diodes, and control ICs.
  5. Efficiency: Aim for high efficiency (>90%) to minimize heat generation and power loss.
  6. Safety: Implement safety features like short circuit protection, overload protection, thermal shutdown, and isolation transformers to prevent accidents and damage.
  7. Grounding and EMI: Design proper grounding and filtering to minimize electromagnetic interference and ensure safety.
  8. Cooling: Implement adequate heat dissipation through heatsinks, fans, or other methods.
  9. Testing and Certification: Thoroughly test and validate your design to ensure safety and compliance with relevant standards.
Factors for Battery Charger Design:
  1. Battery Type: Choose a charging solution compatible with your battery type (e.g., lead-acid, lithium-ion) and charging needs (e.g., constant current, constant voltage).
  2. Charge Rate: Select a safe and appropriate charging rate based on your battery capacity and desired charging time.
  3. Safety Features: Include features like overload protection, over-voltage protection, and temperature monitoring for safe charging.
  4. Efficiency: Seek a charger with high efficiency to minimize energy loss.
  5. Communication (optional): Consider communication capabilities with your battery management system for monitoring and control.
Additional Resources:
  • Safety: Always prioritize safety by studying relevant standards and regulations (e.g., UL, IEC).
  • Online Resources: Several online resources and forums discuss inverter design, but proceed with caution as the information may not be reliable or verified.
  • Professional Help: Consider seeking help from experienced electronics engineers or professionals for design and safety guidance.
Remember, building a high-power inverter involves significant risks and potential for harm. Before proceeding, carefully assess your skills, knowledge, and resources, and prioritize safety above all else.
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I created this question to share published work on the topic. How do you think ML is helping your work?
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ML as a tool is being used in general solar energy research. e.g. one recent application is in digital twin implementation of photovoltaic power plants using ML models to detect faults, optimize maintenance, scenario simulation etc. DTs involve heavy use of ML and is a multi-faceted domain from data acquisition, analysis, visualization, and using the data to train an ML model and update it with real-time measurable parameters like, Temperature, windspeed, Voc, Isc etc.
The DT field can still be considered in its infancy.
Similarly, for power electronics, I recently read a paper that implemented a DT of a Boost converter ( "DC-DC Boost Converters Parameters Estimation
Based on Digital Twin" ). There are other works as well that are using ML based DTs for different power electronic circuits.
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I am currently doing some research on hybrid simulation technique of power electronized power grid and there are some basic concepts I want to know. I want to know whether the word "PD" in this article means phasor domain or phasor dynamic?
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Jiahao Chen In the context of power systems and simulation, "phasor domain" and "phasor dynamic" simulations refer to different modeling approaches, and understanding their differences is crucial for accurate power system analysis. Phasor Domain Simulation: Frequency-Domain Analysis: Phasor domain simulation, also known as steady-state phasor simulation, is primarily used for analyzing the steady-state behavior of the power system. It operates in the frequency domain. Sinusoidal Steady-State: Phasor simulations are suitable for situations where the electrical quantities, such as voltage and current, vary sinusoidally at a fixed frequency (e.g., 50 Hz or 60 Hz in AC power systems). Complex Phasor Representation: In this approach, electrical quantities are represented as complex phasors, which include magnitude and phase angle information. Phasors simplify the analysis of AC circuits by treating sinusoidal signals as complex numbers. Static Elements: Phasor domain simulations are well-suited for studying the steady-state behavior of elements like transformers, transmission lines, and loads. They do not capture transient or dynamic effects. Phasor Dynamic Simulation: Time-Domain Analysis: Phasor dynamic simulation, on the other hand, operates in the time domain. It is used to model and analyze dynamic responses and transient behavior in the power system. Transient Analysis: Phasor dynamic simulations are employed when studying phenomena like fault analysis, system disturbances, and transient stability. These simulations capture how the system responds to sudden changes. Detailed Time-Step Modeling: In phasor dynamic simulations, electrical quantities are represented as functions of time and time-stepping algorithms are used to calculate their values at each time step. Complex Behavior: Phasor dynamic simulations account for the complex interactions and behaviors that occur during transient events, making them essential for assessing system stability and protection schemes. In summary, the key difference between phasor domain simulation and phasor dynamic simulation lies in the analysis focus and the representation of electrical quantities. Phasor domain simulations are concerned with steady-state analysis in the frequency domain, while phasor dynamic simulations are used for transient analysis in the time domain. Depending on the research or analysis objectives related to power electronic power grids, one or both of these simulation techniques may be employed to gain insights into different aspects of the system's behavior.
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We have implemented and installed a grid-connected PV inverter in two different locations. In the first location, it works well, but in the second location, the line voltage to the cubicle body increases and the inverter surge arrester burns. The earth resistance in both cases is below 1 ohm, which indicates that the earthing system is good. I know that high-frequency harmonics are generated by power electronic devices and can cause leakage currents and neutral-earth voltage, but I cannot find the difference between the two conditions. I would appreciate any suggestions you may have.
in the attached pic :
Yellow: line to cubicle body ( which is earthed)
Blue: line-to-line voltage
Green: inverter current
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Please check the surroundings. If the earth around inverter is having many installations with leakage currents the Ground potential itself increases.
Check system Ground/neutral voltage wrt Earth at both locations. This may give hint.
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it was available in previous version under (S-Function-Simcoupler) simcoupler provides interface between PSIM and Matlab/Simulink for co-simulation.
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gooooz!
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It is desired to study dynamic performance of three phase induction motors when started using a soft starter. Which software is more suitable to model soft starters of induction motors, that enables variation of the triggering phase angle, and enables studying dynmaics of starting?
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Thank You so much dear Mr.
Rana Hamza Shakil
Your answer is very helpful.
I did not come through the built in models of soaft starters in MATLAB and PSCAD. They are most propably in newer versions in these software packages. My you please share these models. Thank you so much in advance.
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Any researcher who is interested in working together in the field of Powers Electronics & Drives, Converter & Inverter Design, MPPT Techniques, Solar Photovoltaic Systems, Microgrid, EV Charging Stations. And also interested in publishing good quality paper. Kindly contact me. And also here Give your suggestion and feedback.
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We can do some collaborative work on solar power generation forecasting
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Suggest one MPPT algorithm for solar photovoltaic systems which is not mentioned in this paper or which is better performance compare to other algorithms..
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Thank
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Yes, you can use a Triggered Subsystem in MATLAB Simulink to implement a low-pass filter on a PWM signal. The Triggered Subsystem allows you to execute a block of Simulink model when a specific condition is met, which in this case would be the PWM signal exceeding a certain frequency threshold.
A high-level overview of how you can design this technique in MATLAB Simulink is:
1 - Generate the PWM signal: Start by generating the PWM signal that you want to filter. You can use appropriate blocks or functions in Simulink to generate the PWM waveform based on your requirements.
2 - Measure the frequency: Use a frequency measurement block or algorithm to measure the frequency of the PWM signal. This could be achieved using techniques such as zero-crossing detection or FFT analysis.
3 - Compare with the threshold: Compare the measured frequency with the desired frequency threshold (20 kHz in your case). You can use a Comparison block or an if-else condition to make this comparison.
4 - Triggered Subsystem: Inside the Triggered Subsystem block, design the low-pass filter. You can use standard Simulink blocks, such as a Discrete-Time Integrator and a Discrete-Time Transfer Function block, to implement a simple low-pass filter. Adjust the filter parameters based on your desired cutoff frequency.
5 - Connect the subsystem: Connect the output of the Triggered Subsystem to the appropriate output in your Simulink model, so that the filtered PWM signal can be utilized for further processing or analysis.
6 - Configure the Trigger: Set up the trigger condition for the Triggered Subsystem. In this case, the trigger condition would be the comparison result from step 3.
7 - Simulate and analyze: Simulate the Simulink model and observe the filtered PWM output. Verify that the frequencies above 20 kHz are effectively attenuated while the frequencies below 20 kHz are passed through.
It's important to note that the specific details of your implementation may vary depending on your PWM signal source, sampling rate, desired filter characteristics, and any other additional requirements. Experimentation and fine-tuning may be necessary to achieve the desired filtering behavior.
By utilizing the Triggered Subsystem and appropriate filter blocks, you can implement a low-pass filter on a PWM signal in MATLAB Simulink, removing high frequencies above the specified threshold while allowing frequencies below it to pass through.
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I am happy to share my new paper related to EV applications, which is currently an emerging area of research. I request everyone to please share my paper with your knows or groups.
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A hybrid energy source-based BLDC (Brushless DC) motor drive can be an efficient solution for electric vehicle applications. In this type of system, multiple energy sources are used to power the BLDC motor, which provides better efficiency and performance.
The most common hybrid energy source-based BLDC motor drives use a combination of a battery and an ultracapacitor as energy sources. The battery provides a stable and continuous power supply to the motor, while the ultracapacitor provides short bursts of high-power energy. This combination allows the motor to achieve better acceleration, regenerative braking, and overall efficiency.
The control system of the hybrid energy source-based BLDC motor drive is crucial to achieving optimal performance. The system must be able to monitor and manage the energy flow between the battery and ultracapacitor, as well as control the speed and torque of the motor.
Overall, a hybrid energy source-based BLDC motor drive is an efficient and reliable solution for electric vehicle applications, providing improved performance and reduced energy consumption.
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If you are willing to work in MPPT then I suggest you to follow this paper. This paper helps you to choose the best MPPT algorithm for your system.
cation/369600395_Comprehensive_Review_of_Conventional_and_Emerging_Maximum_Power_Point_Tracking_Algorithms_for_Uniformly_and_Partially_Shaded_Solar_Photovoltaic_Systems
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Maximum Power Point Tracking (MPPT) is a technique used to optimize the output power of photovoltaic (PV) solar panels. There are several MPPT techniques available, including:
  1. Perturb and Observe (P&O) - this method involves periodically perturbing the operating point of the PV panel and observing the corresponding change in the output power. The direction of the perturbation is then adjusted to reach the maximum power point.
  2. Incremental Conductance - this technique is based on the fact that the maximum power point corresponds to the point where the slope of the PV panel's I-V curve is equal to the negative of the panel's incremental conductance.
  3. Fractional Open Circuit Voltage (FOCV) - this method uses the open-circuit voltage of the PV panel to estimate the panel's maximum power point. The panel's output voltage is then adjusted to match the estimated voltage.
  4. Constant Voltage (CV) - this technique involves maintaining a constant voltage across the PV panel and adjusting the panel's output current to reach the maximum power point.
  5. Model Predictive Control (MPC) - this method uses a mathematical model of the PV panel and the MPPT system to predict the panel's behavior and adjust the operating point accordingly.
The choice of the best MPPT technique depends on the specific application and the characteristics of the PV panel. In general, P&O and Incremental Conductance are the most commonly used techniques, as they are simple and effective for most applications. However, for more complex systems or panels with non-linear characteristics, MPC may be the best option. Ultimately, the best MPPT technique will depend on the specific requirements of the application, such as efficiency, cost, and complexity.
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I am considering applying to US universities and I am interested in power electronics related to electric vehicles.
your answers are highly appreciated.
Thanks.
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Please note that
The best book
I found on Power Electronics
Was by
MIT, Boston, Mass.
USA
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Hi all,
In matlab, we are able to find many features in the control system design applications but it always requires specifying the system inputs and outputs to be able to generate its A, B, C, D matrices. However, for an autonomous microgrid, the system has no inputs and outputs which means we only have the A matrix only. How to get the A matrix ? and how could we avoid specifying those inputs/outputs while linearizing the model ?
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For an autonomous microgrid, the system does not have any external input or output variables as it is a self-contained system that operates independently. To obtain the state-space model for the microgrid, you need to determine the A matrix, which describes the behavior of the system in the absence of any input or output.
One approach to obtain the A matrix is to use the mathematical model of the microgrid that includes all the system components and their interactions. This mathematical model may be obtained through first-principles modeling or system identification techniques. Once the mathematical model is obtained, the A matrix can be extracted by neglecting the input and output variables.
Another approach is to use the small-signal model of the microgrid, which is a linear approximation of the system around its operating point. In this approach, you have to assume that the system is operating at a steady-state and small perturbations around this operating point can be modeled as linear. The A matrix can then be obtained by linearizing the system equations around the steady-state operating point.
To linearize the system, you can use the linearization function in MATLAB, which allows us to linearize the system without specifying the input and output variables. The function takes the system equations and the operating point as inputs and returns the A matrix.
In summary, to obtain the A matrix for an autonomous microgrid, you can either use the mathematical model or the small-signal linearized model. You can use the linearization function in MATLAB to linearize the system without specifying the input and output variables.
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Is there anyone with expertise in coding or who has worked on a hybrid algorithm or optimization technique-based MPPT algorithm? I would like to collaborate with him to publish a quality research paper if he is intrested.
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contact me
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There is two pin in the power input port of 7sj62 siemens numerical overcurrent relay. The two pin of the port can be energized by both 110 V DC and 230 V ac. There is electronics product in the relay, so a dc to dc converter must be there. My question is how can the power supply differentiate wheather a DC or AC supply is given in the same port and take necessary action accordingly. (Such as if 230 VAC is given how can it realise and use a rectifier and then DC to DC converter and when 110av DC is given how can it realise and skip the rectifier and directly fed to dc to dc converter?)
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Taking ground as reference for 220 AC and Negative for DC supply via Peak detector ….
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Hello ALL,
Can anyone help me with the details of
Power Electronics based Scopus indexed Q1 Journal that publishes at the earliest.
Thank You...
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Durga Prasad one thing I forgot to highlight is that some of the journals are open access and charge a nominal publication fee for quick publications, most of them are not peer reviewed and hence fake. Most of the students got trapped just because they want to publish quickly with less amount involved. Do not forget to check for the MJL before sending your work to any journal.
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I have simulated a DC-DC converter with a switching frequency of 10 kHz. I need to obtain the averaged values of the measured signals like capacitor voltage and inductor current by filtering the switching measurements. I've tried using the Simulink "Mean" block with a frequency of 10kHz, but as can be seen in the following picture, it does not result in the averaged signal, which should be a straight dc signal(the red curve) as the converter is in steady state. Can you provide a reference that introduces a systematic way to obtain the average value of a switching waveform?
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You can use a real pole with the following transfer function:
H(s)=1/( 1 + s/w0) )
where w0=2*pi*f0, and make f0 = ( 5~10)*10 kHz
If the "Mean" is a real pole (low pass filter), set the frequency to 50 ~ 100 kHz.
Good luck!
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Please share the link
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I. Alhurayyis, A. Elkhateb and J. Morrow, "Isolated and Nonisolated DC-to-DC Converters for Medium-Voltage DC Networks: A Review," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, no. 6, pp. 7486-7500, Dec. 2021, doi: 10.1109/JESTPE.2020.3028057.
This paper might help you.
Kind Regards,
SVK Naresh.
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I want to know your thoughts, experience and suggested literature on the topic of the best way to develop a new electronics product in today's world.
1. What are the steps a designer should take in the process of developing a new electronics product? Why? How?
2. What should he strive to accomplish in each development step? What should the results be?
3. What tools should he use to enchance his work?
4. Where can he learn more about the suggested development process?
Thank you all in advance for helping all the young and aspiring engineers with your knowledge
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A major key is to understand basic electronic fundamentals. This would provide a foundation for new products.
The YouTube video clips about electronics, labeled NDAcademy, provide that foundation.
The website "Electronics.FoxPing.com" provides links to those YouTube video clips.
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There are several voltage DC-DC boosting techniques, and each technique has several approaches and circuits with their own advantages and disadvantages. Therefore, it is quite debatable which boosting technique is good for voltage conversion since some have common advantages and disadvantages.
Nowadays, it has become a general trend among reviewers to reject the article with the reason that "another converter has better voltage gain with fewer components" without looking at the actual superiority of the proposed converter. For example, if the author compares the proposed converter with 10 recent similar converters, then reviewers say the author didn't compare with 11, 12,... converters and reject the article without looking at the main approach.
The question is, is it only about the high voltage gain and a smaller number of devices without looking at the ratings of the devices? Obviously, no.
How to deal with reviewers like this one who try to divert the path and contribution of an article? Another sad story is that the editor gives the decision without understanding whether the given comments are relevant or not.
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Sorry, this is the correct reference:
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In terms of short circuit capability, IGBT used in UPS/motor drive/welding/white goods/PFC are required.
For Inductive Heating, there are mainly two topologies (shown attached): half-bridge and single-ended. Why SC capability is not required here?
Thank you in advance!
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Power is proportional to I2 so the current is carefully controlled. Under normal operating conditions only load current can flow. There can be no overcurrent. There is only a need for a fuse in the main line if the transistor(s) fail.
I would not be surprised if a manufacturer takes a shortcut and relies on the circuit breaker supplying the appliance. Just to save a few cents.
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The parameter values include things like resister, capacitor or inductor values already present in the circuit. For now I have come across software's that can run circuits on loop but with changing voltages and not the parameter values itself. And if there is no such software, is there a short cut in making a 100 of the same circuit but with different parameter values. Any help in the matter would be appreciated!
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With SPICE in all its variants (we're using LTSpice), this is possible. (But don't ask me how to parameterize - this is my colleague,s ball park 🙂)
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Any researcher who is interested in working together in the field of Powers Electronics & Drives, Converter & Inverter Design, MPPT Techniques, Solar Photovoltaic Systems, Microgrid, EV Charging Stations. And also interested in publishing good quality paper. Kindly contact me. And also here Give your suggestion and feedback.
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Yes sir, I'm interested..
I would like to work on Multi-level converters
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To generate minicore from core collection.
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Use chrome to convert Korean to English which helps you in downloading
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I am looking for a circuit design of a 200 watts ultrasonic homogenizer.
I would appreciate if you share any data about this
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Hello everyone!
I'm trying to implement 4 step commutation for AC-AC choppers using FPGA board from Xilinx (Spartan 6). The 4 step commutation code works perfectly fine on the FPGA and the output from the FPGA board has been verified on oscilloscope as well. The input to FPGA comes from Dspace microlab box( rti1202).
However, when I try to give the pulses from the FPGA board to the gate drivers (NCD57001) and try to verify the output of the gate drivers for 4 step commutation, one of the states of four step commutation gets missed and instead 0000 state appears.
I expect the output of FPGA to be exactly replicated by the gate drivers but there's a difference in the results. (files attached)
The propagation delay of gate drivers is 90nsec. The DESAT pin of the gate driver has been grounded at the output. Four gate drivers receive pulses from the 4 output pins of FPGA. The input grounds of all the gate drivers are connected to the output ground of FPGA.
Can anyone please suggest some solutions?
TIA
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Hi Ronaq,
thanks for sharing your solution!
So, on the positive side, your problem is solved; on the negative side, we'll never know why the NCD57001s behaved as they did. :-)
Good luck with your project!
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I need to design and simulate a power supply(generator) to drive 6 transducers. power of each transducer is 50 watts and they work at 40khz frequency.
can you please share a design of such generator with me?
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If you have never set up or repaired switching power supplies or converters, then I do not advise you to undertake the design and manufacture of a generator for an ultrasonic transducer. Try using ready-made DIY kits. Or, for the beginning, learn the schemotechnics of such ready-made kits.
Try to search "Ultrasonic DIY Generator"
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I want to learn about analysis and design of resonant converters but where do I start? Do you have any recommendations about books, articles, webinars, videos that cover this topic and you found it usefull?
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Nedmohan book is the best
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What is the best low-cost FPGA for power electronics modulation and control?
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Welcome!
I think there is no FPGA for power electronics specifically. FPGAs are used to implement logic functions and building blocks for reprogrammable and reconfigurable applications. They are designed for low power consumption and high speed such that they work at the lowest possible power supply.
In smart power ICs there is a digital core which is normally lower power circuits.
Then they are interfaced to the switching power circuits by high voltage digital circuits. Such as the 4000 CMOS logic family or special driver circuits.
It is always so that there is a buffer circuits between the low power core and the power switching circuits.
Best wishes
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I have a power supply which is consists of a flyback and a circuit.
It is a dual output power supply that have 3 wires in output(a. ground wire, b. 4kv, c. 8kv).
in put voltage is 220v and the power of this power supply is 50 watts.
I need to simulate this power supply in ltspice or any similar software so I need to know the specs of the flyback transformer.
how can I find the specs of this transformer without destroying it? :D
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Dear Ju Cheng ,
To see the list of the specifications of the flyback transformer please refer to the paper in the link:
Best wishes
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Hello Everyone,
I want help to evaluation efficiency of DC-DC power converter with Matlab/Simulink. Is there any block for the calculation? Please share any ideas regarding this.
Thanks
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In general, the efficiency of a power converter (AC-DC or DC-DC) is assessed by comparing its input power to its output power. To be more specific, the converter's efficiency is determined by dividing its output power (Pout) by its input power (Pin).
For MATLAB, these tutorials might help:
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There are two types of ultrasonic transducers: piezoelectric and magnetostrictive.
My question is:
Can the same power supply(generator) used for piezoelectric ultrasonic transducers be used for magnetostrictive ultrasonic transducers without loosing performance?
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Hello Ju Cheng ,
Perhaps the most direct way to drive the coil surrounding the magnetostrictive material would be to use a high power audio amplifier such as those used to driver moving coil speakers in a stadium. The input to the power amplifier could be a variable frequency sinewave generator.
I also found an interesting European patent that touches on your question, see attached document.
Regards,
Tom Cuff
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Is it possible to replace a flyback transformer with a common transformer in a high voltage power supply by modifying the circuit? and if yes, what kind of modifications are needed?
I ask this because making a flyback is harder than making a common transformer.
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There are 2 answers :
1. Theoretically : Yes, however you need a circuit modification.
- The flyback uses a transformer with air gap. A normal transformer does not have this.
- You can create an isolated dc/dc convertor with a normal transformer, at the cost of an extra inductor, an extra winding and an extra diode. I think it is called the 'forward' convertor.
2. Practically, what you show in the pictures:
- On the left: This is a low-frequency transformer, mains, max. 400 Hz frequency. (with very good iron.)
- On the right : A ferrite transformer, typically used in the horizontal drive circuit of a Cathode Ray Tube television. In these televisions, the horizontal drive circuit :
a. It controls the left-right sweep of the electrons in the tube. The standard is such that the frequency where it operates on, is about 16 Khz. (Depends on the TV standard used.) As such, you CANNOT change the core to an iron core.
b. Usually, this circuit is also used as the power convertor for the whole TV. Apart from the windings for the left-right movement of the electron beam, there are windings for a multitude of voltages in the TV. The most 'visible' of these is the high-voltage (10 kV for black/white, 30 kV for color) to accelerate the electrons toward the screen. The 10 kV, that is straight, single diode rectifier. For the 30 kV, usually a diode voltage tripler is used. Note that, in the picture, the 'bulky' look for the right transformer is caused by this 10 kVolt winding. This needs lots of isolation, creep distance etc. Note that a normal ferrite transfomer, nowadays operating at ~100 to ~200 Khz is much more compact than a 50-60 Hz transformer.
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I want to make a magnetostrictive ultrasonic transducer for homogenizing applications.
I also want to make its power supply by myself.
I need some references (papers, patents, reports, books videos, etc.) that can help me in this way.
I would appreciate your help
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The ultrasonic piezoelectric transducer operates on the concept of the converse piezoelectric effect. When electricity is supplied to a piezoelectric material, it undergoes physical deformations that are proportional to the applied charge.
However, Magnetostrictive transducers are made up of a large number of nickel (or other magnetostrictive material) plates or laminations that are placed in parallel, with one edge of each laminate affixed to the bottom of a process tank or other vibrating surface. A wire coil is wrapped around the magnetostrictive material.
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hello,
--- Is it possible to always get the maximum power that can be fed from a pv panel if i am imposing a stable voltage at a certain value on DC bus (by a certain controller) ?
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Yes Dear Sarah Kassir , I completely agree with my colleagues Bashar Hamad Ameer L.Saleh , it can be done.
Best regards
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Is it sampling frequency of control loop or some kind of resonance frequency of the system ??
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The frequency response, or variations in magnitude and phase as a function of frequency, is depicted using Bode graphs. This is accomplished using two semi-log scale charts. The top plot is usually magnitude or "gain" in decibels (dB). The bottom plot represents a phase, which is usually expressed in degrees.
A Bode plot /ˈboʊdi/ is a graph representing a system's frequency response in electrical engineering and control theory. It is frequently a mix of a Bode magnitude plot, which expresses the amplitude of the frequency response (usually in dB), and a Bode phase plot, which expresses the phase shift.
In electronics, frequency response is a quantifiable measure of a system's or device's output spectrum in response to a stimulus that is used to define the system's dynamics. It is a measure of the amplitude and phase of the output in relation to the input as a function of frequency.
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Hi everyone,
I am using a TMS320f28377d DSP module for my system (multilevel inverter) which requires generating 24 PWM signals. The good thing in this DSP is that it can generate 24 PWM signals. I am using 8 PWM signals per phase. There is a 120 degree phase shift between the three phases and this by default is done because of the reference signals (Va_ref, Vb_ref, and Vc_ref). I want to make a 180 phase shift between two signals in each phase. For example between PWM#1 and PWM#10.
By referring to the manual I am using the following code:
// Setup Phase
EPwm1Regs.TBPHS.bit.TBPHS = 0. ; // Phase is 0 degree
EPwm1Regs.TBCTL.bit.PHSEN = TB_DISABLE; // Disable phase loading
EPwm10Regs.TBPHS.bit.TBPHS = PwmPeriod * 0.5 ; // Phase is 180 degree
EPwm10Regs.TBCTL.bit.PHSEN = TB_ENABLE; // Enable phase loading
The 0.5 index indicates the phase shift is 180. However, my signals are not 180 inverted. I hope you share your knowledge if you have some answers to my concern. Thank you in advance.
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thank you Mr. Devinda Molligoda
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Take an example, where a battery is to supply two power electronic converters separately. If we switch the contacts of the battery from one converter to the other using two contactors, will it create a significant loss in the converter paths? How much will the efficiency get affected by this method (using contactors)?
What are the other problems that can arise, like the effect in control (due to the resistance or any other component of the contactor)?
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Make sure that (1) the contactors haaveRC networks to absorb transients and (2) the system is proof against the condition of both contactors being open or closed (by some fault condition). For safety!
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Which research area in Power Electronics will make for a good Master thesis in the field of Power Electronics? Would be obliged if someone can inform me about the ongoing scope of such research projects. I am searching for a good research proposal for my Master thesis in the domain of Power Electronics. 
Would be obliged, for your help.
Regards
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One of the main topics of the power electronics is the power flow control from the renewable electricity sources such as solar and wind to the grid where one has to maximize the power transfer and deliver pure waveforms to the grid. Such transfer needs global control to control also the power delivered to the grid.
Also ramping up the power is required.
Best wishes
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I need to write my masters thesis in area of power Electronics can anyone tell me which topics in power Electronics will be good to have research on it. Thanks
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Dear Usama Dar ,
I think one of the main topics in power electronics is developing a global power flow control in the grid connected PV generators for microgrids. While ramping up the power for a house hold grid connected generators. In this global control the load side is also controlled.
Best wishes
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Drones are being improved in many different ways according to their applications. Perhaps, what are the Power electronics Improvement that can be done in the system of the drones In the future?
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I think the most important issues of power electronic circuits for the Drones are:
High conversion efficiency such that one has to save every watt.
Very compact implementation of the circuits to save weight and size.
So, the cooling process must be very effective.
The last issue id the requirement of high reliability to withstand the harsh conditions. So, redundancy is needed for high reliability.
I would advise you to use the new power devices which withstand high operating temperature and work at high power densities such as SiC and GaP.
Best wishes
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What are the diverse effects of Power factor on the Battery as in state of charge and battery current and voltage and life of the battery
Electric vehicles
Power electronics
Ev charger
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The power factor has no appreciable effect on the battery charging process since it is a characteristics of the battery charger itself. The battery charger draws a current from the grid which is phase shifted from the mains voltage. The power factor is = cos phi where phi is the phase shift in the circuit of the charger.
The grid must supply aa apparent power = active power/cos phi.
This has adverse effects on the power generators which must generate a larger power than that consumed and also it must transport it the site of the load leading to power loss and greater cost of the generators.
The system which affects the battery is the batter charge controller.
For more information please follow the paper in the link:
Best wishes
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Hello ,
how can i plot the same figure ( desired figure ) for Required leakage inductance with respect to operating power rating and phase shift for DAB converter i tried so many times i think i have problem with my Matlab code , can anyone help me with it ,
thanks
I'm sharing my MATLAB code and ( desired figure )
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finnally i found a solution
close all , clear all ,clc
%% parameters %%
P=1000:70:4000; phi=0.174:pi/50:pi/2; f=250e3; Vo=300; Vg=33.33; n=3/4;
%% Required leakage inductance with respect to operating power rating % and phase shift for DAB converter
[X,Y]=meshgrid(P,phi);
L=((pi*Y-Y.^2)*Vo*Vg)./(2*pi^2*f*n*X);
figure
h=surf(X,Y,L)
colorbar
title('Required leakage inductance with respect to operating power rating and phase shift for DAB converter')
xlabel('Power (W)')
ylabel('Phase shift (rad)')
zlabel('Inductance (H)')
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A combined topology of two converters with common elements is to be designed, where switching between the two converters can be done only when required (no importance of frequency of switching here). After switching ON/OFF each of the converters will be controlled differently and they will be completely independent.
So if contactors are used, conduction losses would be higher. Even if semiconductor switches are used then we need a bidirectional and bipolar arrangement of switches, the number of switches will increase and the conduction loss in them will also be present.
So I want to know what can be the other methods for this one-time switching because I want the path to be like the simple conductor with minimum or no additional losses. Or what kind of switching would be best here?
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Isn’t there resonance amongst fresuencies of « common elements » and of « converters setting » ?
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I am madhav kumar, I have competed B.Tech (Electrical & electronics ) from Techno India in 2017 and masters in power electronic specialization from Birla institute of technology mesra Ranchi in 2019.
After my masters degree, I started trying for a government job. But due to Corona there was no vacancy and my age limit also expired. Now I want to go further with research. But I can't understand anything, what should I do?
My masters degree project is "Parameter estimation and implementation of maximum power point tracking algorithm for solar photovoltaic system".
I have also done "V/F control of Three phase Induction Motor" with my partner.
I have published 3 IEEE conference paper.
Please give me a proper suggestion and help which is good for my future??
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Hi. Apply for PhD and continue your education. Then after that everything will be easier for you.
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I) How do I measure common mode voltage in matlab simulation?
II) After knowing the value of the common mode voltage, how do I see the behavior of this voltage together with the stray capacitance generating the leakage current?
III) For example, with this circuit (a), where would I have to measure to get these graphs of common mode voltage and leakage current (b)?
Figures: M. N. H. Khan, M. Forouzesh, Y. P. Siwakoti, L. Li, T. Kerekes and F. Blaabjerg, "Transformerless Inverter Topologies for Single-Phase Photovoltaic Systems: A Comparative Review," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 8, no. 1, pp. 805-835, March 2020, doi: 10.1109/JESTPE.2019.2908672.
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In simulation take the average of the pole voltages.
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I'm working on an induction motor drive with a scalar controller. As inverter modulation, I utilized both SVM and SPWM. I discovered that if the frequency and output fundamental voltage from SVM and SPWM are the same, the THD is about the same. The result can be seen in the image attached herewith. Can anybody explain why the THD is the same? Is THD only determined by the amount of fundamental voltage generated? Any literary references would be much appreciated.
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Yes, I have already worked on improving the power quality of three-phase inverters by comparing 3 methods (SPWM, SVPWM and SHE PWM).
the best method was the SHE PWM which eliminates harmonics and gives a very low THD
Concerning your question, in another work, I made a comparative study between the vector and sinusoidal PWM, I found almost the same value of distortion (THD) for different switching frequency, but in the SVPWM, the switching losses decreases which increases the value of the fondalmental (I made a simulation under MATLAB and I validated the results experimentally by the FPGA tool (RT-Lab).
Kind regards
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Hello,
I have a question regarding the zero-sequence voltage injection in three-phase SSTs with bypassed modules in a failure case. I investigated some literature and it is clear that only the fundamental harmonic can shift power between the 3 arms (for power balance).
A 3rd harmonic is often used to reduce the peak arm voltages (-13.4%). However, I investigated asymmetrical fault cases and a 5th and 7th harmonic can help tofurther reduce the arm voltage by a small percentage like 5% (so less redundant modules are needed):
My question is: Do you know other methods to handle asymmetrical fault conditions in cascaded H-bridges or SSTs? Can I handle grid-imbalances like module faults, since the modules in the phase with an over-voltage have to transmit more power (if no zero-voltage injection takes place)?
I thank you for your suggestions and ideas.
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Or do you have experience in three-phase systems with a floating star point?
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Can i take matlab workspace value (time and voltage with non uniform sample distance) and plot in simulink`s scope?
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use excel sheet
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Hello
Anyone who has experience with operating a bidirectional DC-power supply as a load. I have an "ITECH6006C-500-40" and plan to operate a set-up with two motors as described in the simple sketch attached. I was primarily wondering if can directly just connect the 3-phase rectifier bridge (https://no.rs-online.com/web/p/bridge-rectifiers/0462130/) between the generator and the DC-supply(sink)? Are there any need to reduce the ripple output of the rectifier? I tried to simulate a simplified model in Simulink where I had the load represented by a resistor or a current source. See attached figure. The input current is alternating, though it does have harmonics.
best regard
Sveinung Attestog
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The nominal speed of my 4-pole motors are 3000 rpm. So the output voltage wil have a frequency of 100 Hz and after passing through the rectifier the ripple will have a fundamental frequency of 600 Hz. This exceeds the maximum frequecy of 200 Hz the DC-supply/sink can handle, which the maufacture ITECH recently informed me. So the filter is needed to recude the voltage ripple. But when I set a capacitor across the rectifer DC output terminals, the input current gets amplitude peaks that is 2 to 3 times larger than the average value of the output current. I also obsered this with experiment.
Is there a filter which is less harsh on the input? Smaller pk-pk amplitude and less smaller harmonics magnitudes relative to the fundamental component.