In this article, a novel soft-switching current-source rectifier (CSR) based bidirectional on-board charger (OBC) system is proposed for electric vehicles (EVs) comprising multiple battery sets. Besides the CSR's inherent advantages of higher-quality input voltage waveforms, enhanced short-circuit-current tolerant capability and long lifetime of dc choke, the cascaded configuration of dc choppers can implement the higher dc-link voltage with multiple low-voltage battery sets, and the low-voltage devices can be used. With the auxiliary resonant circuit in dc link, the soft-switching operation can be achieved for all power switches in the proposed power conversion circuits. Moreover, the high dv/dt caused by high-speed switching silicon carbide devices can be reduced with the capacitor in the auxiliary circuit. The collaborative operation strategy is proposed for the CSR and the dc choppers, which enables reduction of switching frequency of dc choppers and current ripple in dc link simultaneously. The experimental results are presented to verify the performance of the proposed the OBC system.
|Number of pages||13|
|Journal||IEEE Transactions on Industry Applications|
|State||Published - Sep 1 2021|
Bibliographical noteFunding Information:
Manuscript received December 27, 2020; revised March 23, 2021 and May 24, 2021; accepted June 19, 2021. Date of publication June 29, 2021; date of current version September 16, 2021. Paper 2020-IPCC-1674.R2, presented at the 12th Annual IEEE Energy Conversion Congress and Exposition, Detroit, MI USA, Oct. 11–15, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Industrial Power Converter Committee of the IEEE Industry Applications Society. This work was supported in part by the Jiangsu Natural Science Foundation of China under Grant BK20180013, in part by the Shenzhen Science and Technology Innovation Committee under Grant JCYJ20180306174439784, and in part by the Scientific Research Foundation of Graduate School of Southeast University under Grant YBPY2151. (Corresponding author: Zheng Wang.) Yang Xu, Pengcheng Liu, and Yihan Chen are with the School of Electrical Engineering, Southeast University, Nanjing 210096, China (e-mail: email@example.com; firstname.lastname@example.org; email@example.com).
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- on-board charger (OBC)
- space vector modulation (SVM)
- zero-voltage-switching (ZVS)
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering