Faculty Publications
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Item Power Electronics for Electric Vehicles and Energy Storage: Emerging Technologies and Developments(CRC Press, 2023) Kishan, D.; Kannan, R.; Dastagiri Reddy, B.D.; Prabhakaran, P.This text will help readers to gain knowledge about designing power electronic converters and their control for electric vehicles. It discusses the ways in which power from electric vehicle batteries is transferred to an electric motor, the technology used for charging electric vehicle batteries, and energy storage. The text covers case studies and real-life examples related to electric vehicles. The book • Discusses the latest advances and developments in the field of electric vehicles • Examines the challenges associated with the integration of renewable energy sources with electric vehicles • Highlights basic understanding of the charging infrastructure for electric vehicles • Covers concepts including the reliability of power converters in electric vehicles, and battery management systems. This book discusses the challenges, emerging technologies, and recent development of power electronics for electric vehicles. It will serve as an ideal reference text for graduate students and academic researchers in the fields of electrical engineering, electronics and communication engineering, environmental engineering, automotive engineering, and computer science. © 2023 selection and editorial matter, Dharavath Kishan, Ramani Kannan, B Dastagiri Reddy and Prajof Prabhakaran; individual chapters, the contributors.Item Asymmetric clamped mode control for output voltage regulation in wireless battery charging system for EV(CRC Press, 2023) Kishan, D.; Vinod, M.; Dastagiri Reddy, B.D.; Kannan, R.Inductive based wireless battery charging (WBC) is gaining popularity in the contemporary electric vehicle industry. As the internal resistance of the battery is continuously changing throughout the charging profile, the charging power needs to be controlled. Phase shift control is mostly used to control the power flow between the transmitter and the receiver of the resonant converter in inductive WBC. During the phase shift control, the semiconductor switches to loose zero voltage switching (ZVS) or zero current switching (ZCS), thereby impacting the efficiency of the resonant converter. To address this, an asymmetrical clamped mode control is proposed for a resonant converter in this chapter. The proposed approach ensures that the power semiconductor switches attain ZVS while meeting the charging power requirements. To validate this, a MATLAB/Simulink model of inductive WBC with the proposed control strategy is developed, and the obtained results are presented. © 2023 selection and editorial matter, Dharavath Kishan, Ramani Kannan, B Dastagiri Reddy and Prajof Prabhakaran; individual chapters, the contributors.Item Introduction to hybrid electric vehicle systems(CRC Press, 2023) Luckose, V.; Kannan, R.; Kishan, D.Hybrid electric vehicles (HEVs) have been identified as a prime technology in this modern world, lowering pollution from emissions and having great potential to reduce fuel consumption. They have proved to be an effective solution for minimizing oil dependency and improving air quality. These vehicles are powered by an electric motor, power electronic equipment, and an internal combustion engine (ICE). They are a promising approach to emission-free and environmentally friendly vehicles without affecting the vehicle's functionality and its driving performance. This chapter focuses on introducing HEV systems with their historical development, electric drive technologies, operation modes, and configurations. Also discussed are the power flow modes and power train concepts of HEV systems, and the different types of HEV based on the nature of their power sources. © 2023 selection and editorial matter, Dharavath Kishan, Ramani Kannan, B Dastagiri Reddy and Prajof Prabhakaran; individual chapters, the contributors.Item Analysis of Mutual Inductance between Asymmetrical Spiral Circular Coils of WIPTS for EV Battery Charging(Institute of Electrical and Electronics Engineers Inc., 2020) Kishan, D.; Vinod, M.Wireless Inductive Power Transfer System (WIPTS) for electric vehicle battery charging is an emerging technology. It enables electric power transmission without any physical connection between the transmitter coil (Tx) and receiver coil (Rx) over a certain distance. However, the power transfer capability between the wirelessly coupled inductive coils is greatly affected by mutual inductance (MI) between them. This paper presents a new analytical method based on Neumann's equation for computation of MI between the asymmetrical spiral circular coupled coils. The computed mutual inductances are validated with Finite Element Modeling (ANSYS MAXWELL) simulation results. The relative error between the analytical and FEM simulated results is negligible. © 2020 IEEE.Item Magnetic Coupling Characteristics of Spiral Square - Circular Coupled Coils for Wireless EV Battery Charging System(Institute of Electrical and Electronics Engineers Inc., 2020) Kishan, D.; Vinod, M.; Nagendrappa, N.Electric Vehicles (EVs) are gaining continuous interest due to higher efficiency than internal combustion engine vehicles, and environmentally friendly nature. Nowadays, most of the EV uses the conductive charging method to charge the battery. Besides that, wireless inductive charging technology for EV has recently received a great attention because of the advantages such as increased user convenience and safety. In this method of charging mutual inductance between the wireless inductive coils is the crucial factor. Hence, this paper describes the mutual inductance characteristics of the transmitter with spiral square - receiver with circular (i.e., interoperability spiral square and spiral circular of coils) at various vertical distances using FEM simulations. © 2020 IEEE.Item Design of Spiral Square Inductive Power Pads with Misalignment for Wireless Power Transfer System(Institute of Electrical and Electronics Engineers Inc., 2021) Vinod, M.; Kishan, D.; Nagendrappa, H.; Kannan, R.Wireless power transfer (WPT) can find the potential applications reaching from power transfer to low power appliances to high power electric vehicle battery charging and industrial systems applications. Inductive power pads are the key components for magnetic induction based WPT systems. Hence, this paper labels the analysis of magnetic coupling characteristics of spiral square inductive pads with various misalignments. In this process the inductive power pads are designed in FEM simulation. The modelling approach is presented to calculate the coupling coefficient, self and mutual inductance of spiral square inductive pads of WPT system and also presented the power and efficiency analysis of the system. © 2021 IEEE.Item Comparative Analysis of Symmetrical and Asymmetrical Phase Shift Control Strategy for Resonant Wireless Inductive Charging System(Institute of Electrical and Electronics Engineers Inc., 2021) Vinod, M.; Kishan, D.; Nagendrappa, H.; Dastagiri Reddy, B.D.This paper describes the operation and performance analysis of series/series resonant wireless inductive charging system with symmetrical phase shift (SPS) and asymmetrical phase shift (APS) control strategies. The H-bridge inverter switches of the resonant wireless inductive charging system (RWICS) are designed to operate with zero voltage switching. The comparison of the SPS, APS switching strategies are discussed in regulation of output voltage for different loading conditions and step change in the reference voltages. It is found that the system efficiency is higher with APS control strategy. Also, the variation in pulse-width angle required for controlling the output voltage is small for various loading conditions in APS compared to the SPS. The MATLAB/Simulink Simulation results confirmed that APS control strategy provides superior performance than SPS control for different loading and different output desired conditions. © 2021 IEEE.Item A Time-Frequency Transform based Fault Detection and Classification Methodology for Transmission Lines(Institute of Electrical and Electronics Engineers Inc., 2021) Ghatak, A.; Kishan, D.The inevitable events in power systems such as faults should be detected and resolved quickly to maintain system reliability. This paper proposes a Time-Frequency transform (wavelet transform) based fault detection and classification methodology using current signals. The Daubechies wavelet has been used to extract the features of the current signals. The proposed method detects a fault using the first level decomposition coefficients using wavelet transform, while the fault is classified by using the maximum values of the detail coefficients and logical analytical techniques. The proposed methodology is validated on a test model developed in the MATLAB Simulink environment. The performance of the proposed methodology has been verified under different fault configurations for different fault locations, resistances and inception times. The algorithm is also validated for a load change at the time of fault inception. The results show that the proposed methodology is accurate and reliable in fault detection and classification and can help in taking appropriate decisions to enhance the reliability of power system. © 2021 IEEE.Item Current Source Isolated Bidirectional Series Resonant DC-DC Converter for Solar Power/Fuel Cell and Energy Storage Application(IEEE Computer Society, 2021) Bathala, K.; Kishan, D.; Nagendrappa, N.This paper presents the performance analysis of a current source isolated bidirectional DC-DC converter (CSIBDC) for PV and Fuel Cell (FC) applications. The proposed CSIBDC converter has been chosen to integrate solar power with energy storage systems. Since the solar power is intermittent in nature and it has no dispatch ability on its own, the proposed converter can enable small voltages available from PV to step up by operating in the boost conversion mode. The current source dual active bridge (DAB) converter topology is a good choice for battery charging and discharging applications due to its bidirectional power transfer capability. To achieve high power density with ZVS transition, the proposed dual active bridge converter is operated with phase shift control technique. In order to evaluate the performance of the proposed DAB converter the simulations are carried out using PSIM software. © 2021 IEEE.Item A Technological Research on Electric Vehicles Charging Approaches and Optimization Methods(Institute of Electrical and Electronics Engineers Inc., 2022) Vani, B.V.; Kishan, D.; Ahmad, M.W.; Hanumanthakari, S.; Reddy, B.N.K.In Present day various countries all throughout the world have taken on Electric Vehicles (EVs) to diminish air pollution and fuel consumption. In coming years, Electric Vehicles are bound to become crucial in the transport field. Subsequently, the charging approaches are in the same line. This paper presents an outline of the current and proposed EV charging approaches and optimization methods. Especially the various EV charging methods like battery exchange, conductive charging and wireless charging are presented. Next, some of the EV charging/discharging optimization methods are examined. On the basis of investigation, a few proposals are put forward for future research. © 2022 IEEE.