Irfan Khan

Irfan Khan
Texas A&M University - Galveston | TAMUG · Department of Marine Engineering Technology in joint appointment with Electrical and Computer Engineering

Doctor of Philosophy

About

122
Publications
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814
Citations

Publications

Publications (122)
Article
Full-text available
The conventional hard-switching converters suffer from the limitations like the upper limit on switching frequency, high electromagnetic interference (EMI), more switching losses, large size, increased weight and low efficiency. To overcome these limitations, resonant converters are popularly used in chargers of electric vehicles (EVs). However, th...
Article
Full-text available
Modern utility grid is experiencing a transition from conservative centralized generation structure to a more distributed and decentralized structure. To achieve this transition, decentralized energy sources and loads must be seamlessly integrated and isolated from main grid structure. Realization of one such approach is termed as “Microgrid”. Micr...
Article
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In this review paper, the state-of-the-art vehicle-to-everything (V2X) mode operation of electric vehicles (EVs) is discussed. All the other modes of operation which are enabled by the V2X functionality of the system like Vehicle-to-Grid (V2G), Vehicle-for-Grid (V4G), Vehicle-to-Vehicle (V2V), Vehicle-to-Home (V2H), and Vehicle-to-Load (V2L) are di...
Article
This paper presents novel unity power factor buck-boost inverters. The proposed inverters receive input dc voltage in a wide range and generate output ac voltage in a wide range due to their buck-boost ability. They require only three or four active switches and two inductors. Therefore, the circuit topologies and their operation are simple, and co...
Chapter
Global climate mitigation efforts recently put forward off-grid renewable energy (RE) systems as a viable option to reduce the environmental impact of power generation and fully decarbonize the electricity sector. However, the weather and climate-driven RE sources are highly intermittent and variable. This study analyzed the impact of RE sources co...
Article
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The growing use of electric vehicles (EVs) in today’s transport sector is gradually reducing the use of petroleum-based vehicles. However, as EV penetration grows, the EV’s demand influences distribution network parameters such as power loss, voltage profile. Therefore, an improved bald eagle search (IBES) algorithm is suggested for the optimal pla...
Article
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Recently, Electric vehicles (EVs) gained tremendous attention from government agencies and the automotive industry due to lower CO2 emissions, low maintenance, and operating costs. However, due to increasing EV penetration, the EV's load affects the distribution network parameters like power loss, voltage profile, and harmonic distortion. Therefore...
Article
This paper is devoted to develop interest of power system engineers in learning basic concepts of image processing and consequently using deep networks to solve problems of complex power system networks. To this end, we study fault classification in a power system through automation of equal area (EAC) criterion. By considering EAC graphs as images...
Article
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The present research article focuses on an analytically based method for the optimal allocation and sizing of a renewable energy source (RES) capable of injecting both active and reactive powers in the distribution network. The placement of distributed generation (DG) in the distribution network reduces the magnitude of branch current in between th...
Article
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At present, the limited existence of fossil fuels and the environmental issues over greenhouse gas emissions have been directly affected to the transition from conventional vehicles to electric vehicles (EVs). In fact, the electrification of transportation system and the growing demand of EVs have prompted recent researchers to investigate the opti...
Article
Europe anchored aspiring targets in achieving climate neutrality and this motivates the research communities to analyze, investigate and frame strategies to achieve the goals in the stipulated timeframe. This study reviews the effective decarbonization strategies in the context of Europe's climate neutral vision. Initially, the study analyzes the r...
Article
Ocean wave energy is one of the sustainable energy sources which continues to attract increasing research interests. Traditionally, the model-based controls of Wave Energy Converters (WECs) are derived from the linear hydrodynamics. Although showing promising performance, in practice, the actual electricity produced is significantly lower than pred...
Article
Full-text available
Multilevel inverters (MLIs) are capable of producing high-quality output voltage and handling large amounts of power. This reduces the size of the filter while also simplifying the circuitry. As a result, they have a wide range of applications in industries, particularly in smart grids. The input voltage boosting feature is required to use the MLI...
Conference Paper
Automotive industries and government organizations are paying close attention to electric vehicles (EVs) because of their lower CO2 emissions, cheap maintenance, and operating costs. As the number of EVs on the road grows, the charging station’s load has an impact on distribution network parameters such as power loss, voltage profile, and harmonic...
Article
Electric vehicles (EVs) have remarkably emerged as an alternative for internal combustion engines. With high penetration levels of the EVs, its addition to the existing distribution line infrastructure affects the power quality and grid stability. Additionally, EV charging loads are characteristically different as they are mobile compared to other...
Article
Full-text available
The extensive employment of power semiconductor devices in multilevel inverters (MLIs) has the consequence of increased failure probabilities. With numerous applications demanding highly reliable inverters, several fault-tolerant schemes have been devised to address switch open-circuit faults. This paper analyzes a multilevel inverter topology for...
Article
Full-text available
The world today is plagued with problems of increased transmission and distribution (T&D) losses leading to poor reliability due to power outages and an increase in the expenditure on electrical infrastructure. To address these concerns, technology has evolved to enable the integration of renewable energy sources (RESs) like solar, wind, diesel and...
Preprint
p>Emerging Cyber threats with an increased dependency on vulnerable cyber-networks have jeopardized all stakeholders, making Intrusion Detection Systems (IDS) the essential network security requirement. Several IDS have been proposed in the past decade for preventing systems from cyber-attacks. Machine learning (ML) based IDS have shown remarkable...
Preprint
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As the technological advancement and capabilities of automated systems have increased drastically, the usage of unmanned aerial vehicles for performing human-dependent tasks without human indulgence has also spiked. Since unmanned aerial vehicles are heavily dependent on Information and Communication Technology, they are highly prone to cyber-attac...
Preprint
Full-text available
Emerging Cyber threats with an increased dependency on vulnerable cyber-networks have jeopardized all stakeholders, making Intrusion Detection Systems (IDS) the essential network security requirement. Several IDS have been proposed in the past decade for preventing systems from cyberattacks. Machine learning (ML) based IDS have shown remarkable per...
Preprint
Full-text available
The transformation of conventional power networks into smart grids with the heavy penetration level of renewable energy resources, particularly grid-connected Photovoltaic (PV) systems, has increased the need for efficient fault identification systems. Malfunctioning any single component in grid-connected PV systems may lead to grid instability and...
Article
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The objective of the present paper is to study the optimum installation of Non-dispatchable Distributed Generations (NDG) in the distribution network of given sizes under the given scheme. The uncertainty of various random (uncertain) parameters like load, wind and solar operated DG besides uncertainty of fuel prices has been investigated by the th...
Article
The Sustainable Development Goal 7 endeavors to ameliorate the energy system towards sustainability. Monitoring the country's progress to the goal will be of utmost for the government to take suitable actions and thus, constructing a performance monitoring index for Sustainable Development Goal 7 would tune the pace of implementation. This study ai...
Article
Navigation through narrow waterways always requires expertise and help from local authorities to facilitate safer and faster navigation. The recent Suez Canal blockage by the ultra-large container ship Ever Given running aground has resulted in a temporary halt and extended delay in goods transportation. Blockage of such a critical waterway has rai...
Article
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An innovative union of fuzzy controller and proportional-integral-derivative (PID) controller under the environment of fractional order (FO) calculus is described in the present study for an isolated hybrid power system (IHPS) in the context of load frequency control. The proposed controller is designated as FO-fuzzy PID (FO-F-PID) controller. The...
Article
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A new triple voltage boosting switched-capacitor multilevel inverter (SCMLI) is presented in this paper. It can produce 13-level output voltage waveform by utilizing 12 switches, three diodes, three capacitors, and one DC source. The capacitor voltages are self-balanced as all the three capacitors present in the circuit are connected across the DC...
Article
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An 11-level switched-capacitor multilevel inverter (SCMLI) with 2.5 times boosting feature is presented in this paper. It can produce an 11-level output voltage waveform by utilizing 14 switches, 3 capacitors, 2 diodes, and 1 DC source. Only nine driver circuits are needed as the topology has three pairs of complementary switches and two bidirectio...
Article
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The penetration of electric vehicles (EVs) in the transportation sector is increasing but conventional internal combustion engine (ICE) based vehicles dominates. To accelerate the adoption of EVs and to achieve sustainable transportation, the bottlenecks need to be elevated that mainly include the high cost EVs, range anxiety, lack of EV charging i...
Article
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Power suppliers in a dynamic power market can achieve full benefit by introducing a bidding strategy mechanism. In the power sector, renewable resources have significant gradual usage and their effect on the production of detailed bidding approaches is becoming further complicated in the industry. Due to the irregular nature of these renewable reso...
Article
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Critical infrastructures (e.g., energy and transportation systems) are essential lifelines for most modern sectors and have utmost significance in our daily lives. However, these important domains can fail to operate due to system failures or natural disasters. Though the major disturbances in such critical infrastructures are rare, the severity of...
Preprint
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Advances in Artificial Intelligence and IoT Based Smart Converters for Intelligent Energy Systems (https://link.springer.com/collections/jgbgdicgfd) Guest Editors: Prof. Irfan Khan1 and Dr. Hasmat Malik2 1Texas A&M University, USA, 2Berkeley Education Alliance for Research in Singapore and NUS, Singapore This Topical Collection focuses on the recen...
Article
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Optimum Photovoltaic (PV) system integration in power grid depend upon the total of power accessible from the PV. To figure the PV systems highest power yield, PV panels must be positioned at an optimal tilt angle (OPTA) to absorb maximum solar radiation (SR). This OPTA is a function of the latitude, clearness index, diffuse SR, global SR, direct S...
Preprint
Full-text available
Modern smart grid systems are heavily dependent on Information and Communication Technology, and this dependency makes them prone to cyberattacks. The occurrence of a cyberattack has increased in recent years resulting in substantial damage to power systems. For a reliable and stable operation, cyber protection, control, and detection techniques ar...
Article
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In Cascaded H-Bridge (CHB) Multilevel inverters (MLI), the application of Phase Shifted Pulse Width Modulation (PSPWM) and Level Shifted Pulse Width Modulation (LSPWM) are the two prominent techniques to attain the multilevel as well as better performance. But both of them have certain drawbacks like in PSPWM the switching loss of all the semicondu...
Article
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This paper presents a novel, scalable, and modular multiport power electronic topology for the integration of multiple resources. This converter is not only scalable in terms of the integration of multiple renewable energy resources (RES) and storage devices (SDs) but is also scalable in terms of output ports. Multiple dc outputs of a converter are...
Article
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Electrical vehicle (EV) technology has gained popularity due to its higher efficiency, less maintenance, and lower dependence on fossil fuels. However, a longer charging time is a significant barrier to its complete adaptation. Solid-state transformer (SST) based extreme fast charging schemes have emerged as an appealing idea with an ability to pro...
Article
In Multilevel qZSI, Phase-Shifted Carrier Pulse Width Modulation (PS-PWM) is the most popular modulation method as it offers advantages such as simple implementation, even power distribution among all qZSI modules with optimum THD. However, it results in higher switching losses. An approach of solving this problem would be development and implement...
Research Proposal
This Topical Collection focuses on the recent advancements in smart inverters with improved functionality using artificial intelligence technologies. Topics of interest for this special issue include, but are not limited to, 1. Cyber-secured Power Electronics Converters 2. Sensors incorporated converters to improve system observability and controll...
Article
Full-text available
The development of offshore wind farms (WF) is inevitable as they have exceptional resistance against climate change and produce clean energy without hazardous wastes. The offshore WF usually has a bigger generation capacity with less environmental impacts, and it is more reliable too due to stronger and consistent sea winds. The early offshore WF...
Article
The continuous increase of the distributed energy resources (DERs) penetration levels leads to voltage stability problems in the distribution system. One of the approaches for the mentioned emerging challenge is the proper placement of automatic voltage regulators (AVRs). This paper investigates the optimal placement and sizing of AVRs in a distrib...
Article
Full-text available
The efficiency of PV systems can be improved by accurate estimation of PV parameters. Parameter estimation of PV cells and modules is a challenging task as it requires accurate operation of PV cells and modules followed by an optimization tool that estimates their associated parameters. Mostly, population-based optimization tools are utilized for P...
Article
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The power quality of the Electrical Power System (EPS) is greatly affected by electrical harmonics. Hence, accurate and proper estimation of electrical harmonics is essential to design appropriate filters for mitigation of harmonics and their associated effects on the power quality of EPS. This paper presents a novel statistical (Least Square) and...
Article
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This paper proposes a simplified proton-exchange membrane fuel cell (PEMFC) temperature model for the purpose of estimating PEMFC temperatures with high accuracy using air-cooling systems. Besides knowing that most of the existing models were designed for specific systems, the proposed model also focuses on generalizing the conventional temperature...
Article
With the growth of forecasting models, energy forecasting is used for better planning, operation, and management in the electric grid. It is important to improve the accuracy of forecasting for a faster decision‐making process. Big data can handle large scale of datasets and extract the patterns fed to the deep learning models that improve the accu...
Conference Paper
The switched-capacitor boost inverters based on the reduced component count has been the latest development for solar PV utilization along with ac systems with the high-frequency operation. The higher voltage gain, sensorless system for self-voltage balancing makes SC-based multilevel inverters (MLIs) a perfect choice for PV applications. In this a...
Article
Lithium-ion (Li-ion) based batteries are commonly used in many applications such as electric vehicles, utility-scale storage, and consumer electronics. To maximize power utilization and optimize runtime voltage-current (V-I) characteristics, it is imperative to predict these batteries’ behavior for varying load profiles accurately. In this work, we...
Article
Full-text available
The attractive features of the direct AC-AC converters increase their use in many applications such as voltage control for a heavy-duty load that has a high time constant, AC machine drives, and heating systems based on the induction process. These converters process power in single-stage having simple circuit topologies with reduced switching devi...
Article
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This paper presents Nyström minimum kernel risk-sensitive loss (NysMKRSL) based control of a three-phase four-wire grid-tied dual-stage PV-hybrid energy storage system, under varying conditions such as irradiation variation, unbalanced load, and abnormal grid voltage. The Voltage Source Converter (VSC) control enables the system to perform multifun...
Article
Full-text available
Despite the growth of Electric Vehicles (EVs) leading toward the 2030 goal, deficiencies in charging infrastructures, extended charging times, range anxiety, and existing battery technology may limit EVs' applicability. These constraints affect the choice of EV for both urban driving (high charging times) and highway driving (range anxiety). Thus,...
Article
Full-text available
The availability of cost-effective and environmentally friendly electricity to the entire population is a prime concern of the South African government. It has brought attention to microgrid projects, especially when rural population is considered properly. To address the energy needs of any country, the focus line should be the cost and availabili...