Analysis of Dual Input Buck-Boost Converter for Solar PV Integration with Wireless Electric Vehicle Charger

  • Kuditi Kamalapathi Department of Electrical and Electronics Engineering, National Institute of Technology Tiruchirappalli, Tamil Nadu, India
  • Ponugothu Srinivasa Rao Nayak Department of Electrical and Electronics Engineering, National Institute of Technology Tiruchirappalli, Tamil Nadu, India
  • Mr. Vipul Tyagi Department of Electrical and Electronics Engineering, National Institute of Technology Tiruchirappalli, Tamil Nadu, India
Keywords: Wireless power transfer, Solar photovoltaic system, Dual input buck-boost converter, Electric vehicle charging

Abstract

Investigation of on-board renewable solar PV and wireless EV charging station integration is studied in this paper. Integration of on-board solar PV power with EV charger power will reduce the stress on the grid without the need for extra ground for solar plant installation. A dual-input buck-boost converter (DIBBC) is used to integrate the two power sources and charge the EV battery. A small-signal model of the converter is used to design the controller for three switches of the DIBBC. The simulation model of the integrated solar PV system and wireless power transfer (WPT) system is designed for charging a battery of 120V/165Ah at 130V. The hardware prototype of the proposed EV battery charging system is designed for 1.5kW to verify the simulation results. WPT system is developed for circular spiral-shaped coils, which are series-series compensated for 85kHz resonance frequency. Solar PV is replaced by a solar simulator programmed to operate with the same specifications used in the simulation. Results and analysis of the DIBBC based charger with charging voltage 130V showed higher efficiency up to 92% when both the sources are supplying power to DIBBC. The proposed charging system gives better efficiency with higher source voltages and when the difference in power supplied by the two sources is less. Thus, higher voltage sources are beneficial for improving the efficiency of the integrated charging system. Further, loss analysis in major components of the converter is discussed.

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Author Biographies

Kuditi Kamalapathi, Department of Electrical and Electronics Engineering, National Institute of Technology Tiruchirappalli, Tamil Nadu, India

Kuditi Kamalapathi received the B.Tech. degree in electrical and electronics engineering from JNTU Hyderabad, Telangana, India, in 2008; and the M.Tech. degree in Power Electronics and Drives, from VIT University, Vellore, Tamilnadu, India, in 2010. From 2010–2017 worked as an assistant professor at SV College of Engineering, Tirupati. Currently, he is pursuing a Ph.D. degree in electrical and electronics engineering from the National Institute of Technology, Tiruchirappalli, Tamil Nadu, India. His research interests include power electronics and wireless power transfer systems.

Ponugothu Srinivasa Rao Nayak , Department of Electrical and Electronics Engineering, National Institute of Technology Tiruchirappalli, Tamil Nadu, India

Panugothu Srinivasan Rao Nayak was born in Perikapadu, Guntur, Andhra Pradesh, India, in 1979. He received the B.Tech. degree in electrical and electronics engineering from Bapatla Engineering College (BEC), Bapatla, Guntur, in 2001; the M.Tech. degree in energy systems from Jawaharlal Nehru Technological University (JNTU), Hyderabad, Telangana, India, in 2006; and the Ph.D. degree in electrical engineering from the National Institute of Technology, Tiruchirappalli, Tamil Nadu, India, in 2014. Currently, he is an Assistant Professor with the Department of Electrical and Electronics Engineering, National Institute of Technology. His research interests include power electronics and drives, biologically inspired optimization techniques and wireless power transfer systems.

Mr. Vipul Tyagi, Department of Electrical and Electronics Engineering, National Institute of Technology Tiruchirappalli, Tamil Nadu, India

Vipul Kumar Tyagi received B. Tech degree in electrical and electronics engineering from Bhagwant University, Ajmer, Rajasthan, India, 2016 and M.Tech degree in Power & Energy, from Amrita Vishwa Vidhyapeetham, Amritapuri, Kerala, India, 2019. Currently, he is working as Junior Research Fellow in NIT Tiruchirappalli, Trichy, Tamil Nadu, India under CPRI sponsored project. His research interests include Wireless EV Charging, Smart Charging, Smart Metering and Demand Side Management for Load Congestion Mitigation.

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Published
2021-08-31
Section
SPECIAL ISSUE: Energy Access & Off-Grid Systems for Residential Microgrids/Nanog