High-precision bus voltage control based on NLESO and TSMC predicted load current and grid voltage differential feedforward

Frontiers in Energy Research

Energy Research

Zhi Zhang¹  Jigang Yao²  Liangliang Wang²  Shoumo Wang²  Di Xie³  Longyun Kang³ 

[1] Department of Electrical Engineering and Automation, Dongguan University of Technology, Dongguan, China;Guangdong HYNN Technologies Co., Ltd, Dongguan, China;New Energy Research Center, School of Electric Power, South China University of Technology, Guangzhou, China;

关键词: power battery test equipment;    AC/DC;    DC bus voltage controller;    ESO;    second order differential feed-forward;   

DOI  :  10.3389/fenrg.2022.1009981

 received in 2022-08-02, accepted in 2022-09-14,  发布年份 2023

来源: Frontiers

【 摘 要 】

Power battery test equipment is widely used to produce and test new energy vehicles and storage containers. To address the problem of DC bus voltage fluctuations that affect the accuracy of output voltage and current, a high-accuracy bus voltage control strategy is based on nonlinear extended state observation (NLESO) and terminal silding mode controller (TSMC) load current estimation. Simulation and experimental results show that the control strategy has a good suppression effect on the DC bus voltage fluctuation and can effectively improve the accuracy of the DC side output voltage and current. Grid voltage differential feedforward is adopted, which can achieve fast suppression of DC bus voltage fluctuations in power battery test equipment and meet the high precision output requirements of the system DC bus.

【 授权许可】

Unknown   
Copyright © 2023 Xie, Wang, Zhang, Wang, Kang and Yao.