12-pulse Rectifier with DC-Side Buck Converter for Electric Vehicle Fast Charging

Conference paper (2022)

Authors

Dun Lan Student
Y. Wu DC systems, Energy conversion & Storage - EEMCS
Thiago Batista Soeiro European Space Agency (ESA)
P. Granello Sapienza University of Rome
Z. Qin DC systems, Energy conversion & Storage - EEMCS
P. Bauer DC systems, Energy conversion & Storage - EEMCS
Research Group
DC systems, Energy conversion & Storage (EEMCS) (TU Delft)
Copyright: © 2022 Dun Lan, Y. Wu, Thiago Batista Soeiro, P. Granello, Z. Qin, P. Bauer
DOI: https://doi.org/10.1109/IECON49645.2022.9968872
12-pulse converter EV fast charging Harmonic reduction Triangular current shaping
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Published Date

2022

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

This paper presents the study of a 100kW electric vehicle (EV) fast charger based on a 12-pulse rectifier cascaded with two buck-type DC-DC converters. The proposed circuit operates with a triangular current shaping method which considerably improves the current harmonics performance of the system. The studied circuit is particularly suited for high power battery charging, being relatively simple to operate, requiring a low active semiconductor count (only two active switches), and because it employs circuit technologies well-established in the high power market. Above all, this EV fast charger meets the requirements of isolation, high efficiency, high output voltage and good power quality (low THD and unity power factor). This paper describes in detail the analytical modeling of the studied circuit, including the current harmonic input filter design which meets the grid standard requirement, and the loss modeling of the semiconductors and passive elements. The modeling and simulation results of the proposed 100 kW system are presented and analyzed.