Control strategy of ISOP battery test power supply based on DAB

被引：0
|
作者：
Shi Y. [1 ]
Zhang Z. [1 ]
Chen Z. [2 ]
Peng K. [3 ]
机构：
[1] Photovoltaic System Research and Engineering Center of the Ministry of Education, Hefei University of Technology, Hefei
[2] Institute of Electric Power Science of State Grid Anhui Electric Power Co., Ltd., Hefei
[3] Hefei Kewell Power System Co., Ltd., Hefei
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2022年 / 26卷 / 08期
关键词：
battery testing; control strategy; converter with dual active bridge input in parallel and output in parallel; input-voltage sharing; output-current sharing; test power supply;
D O I：
10.15938/j.emc.2022.08.009
中图分类号：
学科分类号：
摘要：
Aiming at the problems of slow charging and discharging test speed and high energy consumption that traditional test power supply mostly adopts unidirectional energy consumption structure, a dual active bridge (DAB) is proposed as the basic module of input-series-output-parallel (ISOP) converter constitutes a test power supply, and at different stages of charging, the constant-current control and droop-voltage-limiting control strategy of ISOP-DAB converter are proposed. The proposed test power supply can improve the charging and discharging speed and reduce the energy consumption, and at the same time avoid the problem of large size and mass of the test device caused by the use of power frequency transformers. The working principle and modeling method of the ISOP-DAB converter in the test power supply were studied, and the equivalent model of the small-signal circuit was obtained. Compared with the input-voltage-sharing control strategies of ISOP-DAB converter, the modular control was selected for further research to realize the multi-module input-voltage sharing and output-current sharing while taking into account the realization of the segmented charging method. Finally, the effectiveness of the proposed method was verified by simulated experiments. © 2022 Editorial Department of Electric Machines and Control. All rights reserved.
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页码：79 / 87
页数：8
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