What are the relevant EMC/EMI Standards for inverters ?

Very helpful thanks for these answers

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20th Feb, 2019

Budapest University of Technology and Economics

This file should help you, check it from page 10

EMC-Compliance-for-Renewable-Resource-Power-S
ystems.pdf
1.45 MB

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All Answers (6)

15th Feb, 2019

Fabrizio Castaldi

Elettro c.f. s.r.l.

For welding machines, the standard for irradiated and conducted electromagnetic emissions is regulated by the international standard IEC 60974-10: 2014 with related attachments such as IEC 61000-3-12: 2011 which determines limits for harmonic currents produced by equipment connected to public low-voltage systems with input current >16 A and ≤ 75 A per phase

15th Feb, 2019

Sid-Ahmed Aris

Université Clermont Auvergne

Fabrizio Castaldi Thank you !

20th Feb, 2019

Budapest University of Technology and Economics

This file should help you, check it from page 10

EMC-Compliance-for-Renewable-Resource-Power-S
ystems.pdf
1.45 MB

6 Recommendations

22nd Feb, 2019

Sid-Ahmed Aris

Université Clermont Auvergne

Kotb M. Kotb Very helpful indeed, thank you !

25th Feb, 2019

Budapest University of Technology and Economics

Sid-Ahmed Aris You are welcome, thanks a lot.

What should be the operational switching frequency of the midium/high powered EV drive?

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Discussion

6 replies

Asked 16th Mar, 2021

Utkal Ranjan Muduli

For electric vehicle (EV) propulsion motor drive control, there are numerous PWM techniques of variable or fixed switching frequencies in use. What effects do variable or fixed switching frequencies have on the output performance of medium/high-powered EV propulsion motors? What should be the switching frequency limit for a stable EV drive operation? Any assistance with this matter will be greatly appreciated.

What is the relationship between dc link voltage (inverter) and speed of the induction motor?

Is there any estimate the speed of the induction motor with the help of dc link voltage of the inverter.

5 answers

Asked 28th Feb, 2019

Narendra Ankireddy

In terms of publication index, what indicator is the best for researchers indexing, Google Scholar, Scopus, Clarivate or others?

Discussion

37 replies

Asked 7th Nov, 2018

Mohamed A. A. Abdelkareem

I believe that Google Scholar is the most popular academic indexing way for researchers and citations. However, some other indexing institutions may be more professional than Google Scholar but not as popular as Google Scholar. Other indexing websites like Scopus and Clarivate are providing more statistical figures for scholars, institutions or even journals. On account of publication citations, always Google Scholar shows higher citations for a paper than other indexing websites since Google Scholar consider most of the publication platforms so he can easily count the citations. While other databases just consider the citations come from those journals that are already indexed in their database.

How to calculate the ∆i_max maximum current ripple for converter during LCL filter design for three phase VSC?

Discussion

4 replies

Asked 10th Aug, 2021

Akhtar Hussain Javed

LCL filter are used for grid connected three phase inverters. The design of LCL filter is tricky as it can effect the stability of the system. During the design of LCL filter, to calculate converter side inductor, first maximum current ripple is calculated as

∆i_max=V_dc/(6L_i f_sw )

In above equation both ∆i_max and Li are unkown, so some authors[1] suggest to use 10% of Imax for this ripple current. On the other hand, other paper for example [2] and [3] use a relatively complex method to calculate the value of ∆i_max.

My first question is how accurate is use of 10%*Imax approximation? Are there any other quick way or approximations according to standards to find ∆i_max.

My second question is how to find the right attenuation factor δ for particular value of THD?

[1]M. Dursun and M. K. DÖŞOĞLU, "LCL Filter Design for Grid Connected Three-Phase Inverter," 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT), 2018, pp. 1-4, doi: 10.1109/ISMSIT.2018.8567054.

[2]Said-Romdhane, M.B.; Naouar, M.W.; Belkhodja, I.S.; Monmasson, E. An Improved LCL Filter Design in Order to Ensure Stability without Damping and Despite Large Grid Impedance Variations. Energies 2017, 10, 336. https://doi.org/10.3390/en1003033

M. Ben Saïd-Romdhane, M.W. Naouar, I. Slama. Belkhodja, E. Monmasson,

[3]Simple and systematic LCL filter design for three-phase grid-connected power converters,

Mathematics and Computers in Simulation, Volume 130,2016,Pages 181-193,ISSN 0378-4754,

https://doi.org/10.1016/j.matcom.2015.09.011.

(https://www.sciencedirect.com/science/article/pii/S0378475415002116)

Hi, I Am Currently Researching On Wind Energy In Nigeria. Pls, Which Software Can Plot This For Me Or How Can I Get The Same Plot For Nigeria?

This is a plot of wind speed in America at 100m and 80m. what software can i use to plot this

8 answers

Asked 18th Nov, 2020

Emeka Chinachi

How can I find electricity generation data of small to medium scale PV panels and Wind turbines?

I am using model predictive control to simulate market market participation of a Virtual Power Plant in the north of the Netherlands. The power plant portfolio consists of local (geographical sense: 5,749m²) renewable energy sources (wind, solar), stationary batteries and an electric vehicle fleet).

13 answers

Asked 22nd Sep, 2020

Johanna Lorenz

The market participation is constrained by the DSO constraints, Availability of electric vehicles (as their electricity demand has high priority), generation limits, storage limits and other fleet characteristics.

To calculate the power balance at each time step k within the forecasting horizon, I still need input data describing the supply side. Hence small to medium scale PV and wind generation data.

Does anyone has recommendation how to get most realistic data?

Thank you very much!

What are the dominant converter topology people usually used for small wind turbine with PMSG?

Hello Technician and Academician

4 answers

Asked 21st Sep, 2020

Muhammad Ikhsan

Can somebody please inform me, what is actually the type/topology of power converter available at the market for small wind turbines (below 10kW) with PMSG? especially for the rectifier part, is it just simple rectifier or controlled rectifier, with thyristor or MOSFET?

what are the dominant topology people used? for offgrid and ongrid

if you check IEEExplore, then soo many types, but I cannot find the reality in the market

what people recently use actually?

Best Regard

Is it normal to get different results when you try to simulate a paper your are basing your research on?

I am simulating AODV and AOMDV in NS 2 to compare their performance in terms of Packet Delivery Ratio (PDR), Throughput, Delay and energy consumption, in order to propose a better algorithm. The outputs I am getting after running in NS2 through TCL files are totally different from what I see in other researches especially for residual energy. What am I doing wrong?

11 answers

Asked 19th Jul, 2020

Wilson Muange

What new software do you offer in the field of renewable energy?