Author(s)

Chihchiang Hua¹, Jianbin Lai², Zhewei Zhang¹

¹Department of Electrical Engineering, National Yunlin University of Science and Technology, Yunlin.
²Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology, Yunlin.

This paper proposes an improved modularizable high-frequency battery equalizer with multi-winding transformer for energy storage systems. The involvement of parasitic components in circuit resonance, along with the addition of a resonant network, enables soft-switching for the power switches to reduce the switch voltage stress due to high frequency switching operation. The proposed circuit is designed to operate at switching frequency of 1 MHz. The detailed analysis of circuit operation is provided. At last, the feasibility and performance of the proposed battery equalizer are demonstrated through the system implementation and experimental tests of a prototype circuit. Experimental results have shown zero voltage switching (ZVS) is achieved on the switches.

Battery Equalizer, High Switching Frequency, Multi-Winding Transformer

Hua, C. , Lai, J. and Zhang, Z. (2024) A Modularizable High-Frequency Battery Equalizer with Multi-Winding Transformer for Energy Storage Systems. Open Journal of Applied Sciences, 14, 3731-3747. doi: 10.4236/ojapps.2024.1412243.