Model predictive control-based voltage equalization control strategy for an input-parallel output-series dual active bridge converter

被引：0
作者：
Ma, Zhi [1 ]
Lin, Hong [1 ]
Fan, Yanfang [1 ]
机构：
[1] School of Electrical Engineering, Xinjiang University, Urumqi
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2024年 / 52卷 / 22期
基金：
中国国家自然科学基金;
关键词：
all-DC wind power system; DAB converter; model predictive control; single phase shifting; voltage equalization control; wind power DC outflow;
D O I：
10.19783/j.cnki.pspc.240110
中图分类号：
学科分类号：
摘要：
The IPOS-DAB converter, which takes dual-active-bridge converters (DAB) as a sub-module, and with input parallel output series (IPOS), is the key hub of a full-DC system realizing wind power DC convergence and delivery. The component parameters of an IPOS-DAB converter in actual engineering application are different, and the output power of different DAB modules when parallel/series connection is unbalanced results in DAB module output voltage and current imbalance. This will increase the sub-module damage rate, greatly reducing system reliability. Conventional voltage equalization control suffers from low reliability and insufficient dynamic performance, and therefore cannot meet the control requirements during external dynamic disturbances. To address these problems, this paper uses the advantages of a model predictive control (MPC) method and adopts it for voltage equalization control of an IPOS-DAB converter. First, the prediction model is established from the IPOS-DAB converter. Then, the control objective function and the overall control strategy are designed. Finally, the system model is constructed in Matlab/Simulink. Compared with traditional voltage equalization control in different working conditions, the proposed control strategy has a better voltage equalization control effect. © 2024 Power System Protection and Control Press. All rights reserved.
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页码：12 / 21
页数：9
相关论文
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