A 10kW Solar-Powered Bidirectional EV Charger Compatible with Chademo and COMBO

Journal article (2018)

Authors

G.R. Chandra Mouli DC systems, Energy conversion & Storage - EEMCS
Jos Schijffelen Power Research Electronics BV
Mike van den Heuvel Power Research Electronics BV
Menno Kardolus Power Research Electronics BV
P. Bauer DC systems, Energy conversion & Storage - EEMCS
Research Group
DC systems, Energy conversion & Storage (EEMCS) (TU Delft)
Copyright: © 2018 G.R. Chandra Mouli, Jos Schijffelen, Mike van den Heuvel, Menno Kardolus, P. Bauer
DOI: https://doi.org/10.1109/TPEL.2018.2829211
Charging Electric vehicle Photovoltaic systems (PV) Powered alloy core Silicon carbide (SiC) Paper produced in Windows/Microsoft Word
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Published Date

2018

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

Charging electric vehicles (EVs) from photovoltaic panels (PV) provides a sustainable future for transportation. This paper presents the development of a 10kW EV charger that can be powered from both a PV array and the three phase AC grid. The goal is to realize a high power density and high-efficiency three-port power converter that integrates the EV, PV, grid and meets the Chademo and CCS/Combo EV charging standards. The EV port is designed to be isolated and bidirectional, so that both charging and vehicle-to-Grid (V2G) can be implemented. As PV and EV are both DC by nature, the converter uses a central DC-link to exchange power between the EV and PV, thereby increasing efficiency. The use of silicon carbide devices and powdered alloy core inductors enables high switching frequency and power density. A stable closed loop control allows four different power flows: PV- EV, EV-grid, grid-EV and PV-grid. Hence the converter operates as a PV inverter, a bidirectional EV charger and a combination of both. A 10kW prototype has been successfully tested and its experimental waveforms and measured efficiency are presented. It has three times the power density and higher partial and peak load efficiency when compared to existing solutions.