Abstract Electric vehicles (EV) are found to be a good alternative for the conventional internal combustion (IC) engine vehicles in transportation sector due to its various advantages. Now-a-days, wireless charging of EV battery is preferred among the various methods used for charging EV battery. In this paper, extensive review is carried out on various methods used for wireless charging of an EV battery. Different techniques used for transferring power in wireless mode to charge the EV battery are static EV charging technique and dynamic EV charging technique. Static wireless EV battery charging technique adopts inductive and capacitive method for transferring power whereas, dynamic wireless EV battery charging technique adopts only inductive method for transferring power. These techniques are discussed thoroughly in this paper and broad review is carried out with a focus on the compensation circuit topologies, types of core for magnetic coupled inductors, different converters and controllers used for wireless power transfer (WPT) system. Also, design aspects of an static wireless EV battery charging system along with its equivalent circuit analysis is presented in this paper. Challenges and future development in wireless charging of EV battery is also explained in this paper.

Wireless Power Transfer Topologies used for Static and Dynamic Charging of EV Battery: A Review

One of the most challenging and interesting field in power electronics is the ability to mitigate the Electromagnetic Interference (EMI). A natural source of EMI includes the atmospheric discharge/charge phenomena and extra-terrestrial radiation. Man-made source of EMI are line radiation, auto ignition, radio frequency interference and power lines. Suppression of EMI and enhancing the Electro Magnetic Compatibility (EMC) has become essential in high frequency power electronic converters. This review article is a one stop solution for new researchers and practitioners to understand about the effects of EMI and its suppression techniques in detail.

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A State-of-the-Art Review on Conducted Electromagnetic Interference in Non-Isolated DC to DC Converters

As electricity demand escalated with supply, though there are lot of thermal power station, nuclear energy and other conventional power sources Yet, there is exhaustion in the above assets and adding dangerous impacts to the atmospheric conditions  The world searches for sustainable power source that it is normally accessible such as sun and wind Apart from all the renewable energy resources, solar energy is readily harnessed for domestic application to meet demand To increase the power conversion efficiency from the solar PV system it is better have a perfect DC to DC converters The proposed outcome of this paper is to outline the DC to DC converter with MPPT algorithms to concentrate on extreme productivity at roof-top for solar PV application which decreases the cost of energy In addition to that it also prevents panel miss matching at all environmental conditions for safer DC Voltage with flexible site design especially for domestic applications from the solar photovoltaic module It is necessary to analyze the converters and MPPT algorithms under closed loop condition for the design and installation of solar PV system to the load or to the grid This review summarizes few DC to DC converter topologies, maximum power point tracking algorithm and also paid attention on the advantages and disadvantages of these algorithms and topologies

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A Comparative Study and Analysis on Conventional Solar PV Based DC-DC Converters and MPPT Techniques

DC-DC converter plays a major role in microgrid and energy storage system using operational stability and synchronised power delivery. In this paper, an energy management control algorithm is propo...

Bidirectional DC-DC converter for microgrid in energy management system

In this paper, an optimized dual-loop current controller for current balancing of a Zeta converter is presented and analysed in continuous current mode. The proposed strategy has an inner loop which is defined based on the input inductor current control. The reference signal of the sliding manifold is changed through an outer loop which works to regulate the output current. The stability analysis of the two-loop controllers is established by means of Routh–Hurwitz criterion and the equivalent control method. Then, the gains of the outer loop compensator are optimized using the integral gain maximization method to guarantee the robustness and disturbance rejection of the closed loop system in the presence of model uncertainties. The controller performance is investigated in depth taking into account the parametric variations associated with the converter operation in various equilibrium points. Moreover, a laboratory set-up of the suggested controller has been implemented by using analogue component devices. The experimental results demonstrate the effective performance of the controller.

Input–output current regulation of Zeta converter using an optimized dual-loop current controller

Design and implementation of a zero voltage transition bidirectional DC‐DC converter for DC traction vehicles

This paper proposes a new ZCS non-isolated bidirectional buck–boost DC–DC converter for energy storage applications The conventional bidirectional converter derived with auxiliary edge resonant cell to obtain ZCS turn-on/turn-off condition of the main switches The proposed converter is operated in boost and buck modes with soft-switching operations in order to have minimized current stresses and reduced switching losses since the resonating current for the zero-current switching does not flow through the main switches The proposed converter improves the overall efficiency over hard-switching converter for high-power energy storage applications This paper mainly describes the operation principles of the topology, simulation evaluation, and its validation by the experimental results on 50 V–120 V–300 W system, which proved the soft-switching capability of this converter and its performance

A New Non-isolated ZCS Bidirectional Buck–Boost DC–DC Converter for Energy Storage Applications in Electric Vehicles

This paper presents a new zero voltage transistion (ZVT) bi-directional DC-DCconverter for energy storage system in DC traction. This bidirectional converter can transfers the power flow from low voltage side to high voltage side and viceversa. The conventional hard-switched non-isolated converter improved with the additional auxiliary cell to obtain zero voltage transition for the IGBTs. The main advantages of this topology are reduced the switching losses and improved the efficiency as well.The main aim of this converter is to achieve the operation of zero voltage transition during the commutation  of main switches from off to on by utilizing auxiliary cell, which consist active and passive elements.The boost and buck modes of operations are achieved with the zero voltage transistion, which reduce the IGBTs current stresses and switching losses.This paper mainly describes the operation principles and the evaluation of the simulation results with the aid of Matlab simulations.The obtained results were proved the  expected assumptions of the theoretical  analysis.

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Design and Simulation of a New ZVT Bi-directional DC-DC Converter for Electric Vehicles

This study proposes a novel design of soft-switching based bidirectional converter for the applications in energy storage systems. By implementing an additional auxiliary circuit to the conventional non-isolated converter, the proposed converter inherits better efficiency with minimised turn-on losses. Moreover, auxiliary switching devices are also soft-switched. This converter can be operated at high power outputs through ZVS turn-on operation. The operation principle, design analysis and experimental results are reported to validate its main features in the study. Furthermore, the performance of this converter is analysed on a 1 kW laboratory prototype for both boost and buck modes.

https://ietresearch.onlinelibrary.wiley.com/doi/pdf/10.1049/iet-pel.2019.1156

Improved bidirectional DC/DC converter configuration with ZVS for energy storage system: analysis and implementation

This paper presents the implementation and evaluation of an isolated resonant converter and also compares the efficiencies of hard and soft switching isolated converter topologies using high-frequency transformer for auxiliary power supplies in DC traction. The half-bridge DC-DC converter with resonant network has been tested under zero voltage switching (ZVS), zero current switching (ZCS) operations, and also dead time variation of the power switches improving the overall system efficiency. This paper provides guidelines for a cost effective DC-DC converter design based on discrete 1200V/40A IGBTs driven with high switching frequency. That would allow optimization of passive elements by reducing their mass making the converter suitable for traction application. Simulations and test results of an experimental setup with output power up to 3kW are presented. The overall system efficiency of the ZVS and ZCS operations of half-bridge LLC DC-DC converter were compared with a classic hard switching topology.

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Veera Venkata Subrahmanya Kumar Bhajana

Papers

Design and implementation of a zero voltage transition bidirectional DC‐DC converter for DC traction vehicles

A New Non-isolated ZCS Bidirectional Buck–Boost DC–DC Converter for Energy Storage Applications in Electric Vehicles

Design and Simulation of a New ZVT Bi-directional DC-DC Converter for Electric Vehicles

Improved bidirectional DC/DC converter configuration with ZVS for energy storage system: analysis and implementation

Development and Evaluation of an Isolated Resonant Converter for Auxiliary Power Supply in DC Traction