中国电气工程学报（英文） ›› 2023, Vol. 9 ›› Issue (2): 38-56.doi: 10.23919/CJEE.2023.000019

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  • 收稿日期:2021-08-30 修回日期:2021-12-08 接受日期:2022-01-04 出版日期:2023-06-25 发布日期:2023-06-28

Designing an On-board Charger to Efficiently Charge Multiple Electric Vehicles

Jyoti Gupta, Rakesh Maurya*, Sabha Raj Arya   

  1. Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India
  • Received:2021-08-30 Revised:2021-12-08 Accepted:2022-01-04 Online:2023-06-25 Published:2023-06-28
  • Contact: *E-mail: rmaurya@eed.svnit.ac.in
  • About author:Jyoti Gupta received the B.Tech. in Electrical Engineering from Swami Keshvanand Institue of Technology, Management & Gramothan, Jaipur, in 2013 and M.Tech. in Power Systems from Rajasthan Technical University, Kota, Rajasthan, India, in 2017. She is pursuing her Ph.D. in the Department of Electrical Engineering of Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India from 2018 onwards. She also worked as a Lecturer in Electrical Department of Apex Institute of Engineering & Technology, Jaipur, Rajasthan, India, from 2014 to 2015. Her research activities are related to DC-DC converters, power quality and battery charging for EV applications.
    Rakesh Maurya received the B.Tech. degree in Electrical Engineering from the Kamla Nehru Institute of Technology, Sultanpur, India, in 1998, and the M.Tech. degree in Power Electronics and Electric Drive and the Ph.D. degree in Electrical Engineering from the Indian Institute of Technology Roorkee, Roorkee, India, in 2002 and 2014, respectively. He is currently an Associate Professor in the Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat, India. In last five years, he has published more than 35 SCI/SCIE research papers in journals of international repute particularly IEEE Transactions, IETs-UK and Elsevier, Taylor & Francis and many conference papers. He is also involved in executing sponsored projects in areas of custom power devices to mitigate power quality problems in distribution system. He has published one book chapter on review of various control algorithms for voltage source converter for power quality in wind based distributed power generation system in springer publications Singapore. He is supervised/supervising more than ten doctoral research scholars and 22 M.Tech. students. His current research areas include design of switching power converters, high power factor AC/DC converters, hybrid output converters, improved power quality converters for battery charging applications, power quality problems, advanced electric drives and applications of real-time simulator for the control of power converters. He is member of IEEE and Life Member of System Society of India.
    Sabha Raj Arya (M'12-SM'15) received Bachelor of Engineering degree in Electrical Engineering from Government Engineering College Jabalpur, in 2002, Master of Technology in Power Electronics from Motilal National Institute of Technology, Allahabad, in 2004 and Ph.D. degree in Electrical Engineering from Indian Institute of Technology (I.I.T) Delhi, New Delhi, India, in 2014. He joined as Assistant Professor, Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat. January 2019, he is promoted as Associate Professor in the same institute. His fields of interest include power electronics, power quality, design of power filters and distributed power generation. He received two National Awards namely INAE Young Engineer Award from Indian National Academy of Engineering, POSOCO Power System Award from Power Grid Corporation of India in the year of 2014 for his research work. He is also received Amit Garg Memorial Research Award-2014 from I.I.T Delhi from the high impact publication in a quality journal during the session 2013-2014. At present, he has published more than hundred research papers in internal national journals and conferences in field of electrical power quality. He also serves as an Associate Editor for the IET (UK) Renewable Power Generation.

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Abstract: An on-board charger for efficiently charging multiple battery-operated electric vehicles (EVs) is introduced. It has evolved as a single-input dual-output (SIDO) integrated boost-single ended primary inductor converter (SEPIC) fly-back converter, offering cost-effectiveness, reliability, and higher efficiency compared to conventional chargers with equivalent specifications. The proposed system includes an additional regulated output terminal, in addition to an existing terminal for charging the EV battery of a 4-wheeler, which can be used to charge another EV battery, preferably a 2-wheeler. With the aid of control techniques, unity power factor operations are obtained during constant-voltage (CV)/constant-current (CC) charging for the grid-to-vehicle (G2V) operating mode. Using mathematical modelling analysis, the proposed system is developed in a Matlab/Simulink environment, and the results are validated in a real-time simulator using dSPACE-1104. The proposed system is employed for charging the batteries of two EVs with capacities of 400 V, 40 A·h and 48 V, 52 A·h for the 4-wheeler and 2-wheeler, respectively. Its performance is investigated under different operating modes and over a wide range of supply voltage variations to ensure safe and reliable operation of the charger.

Key words: Continuous conduction mode (CCM), CV/CC, electric vehicles (EVs), power factor correction (PFC), single input dual output (SIDO), state of charge (SOC)