PBC-SMC control strategy of MMC-UPQC under non-ideal grid voltage

被引：0
作者：
Zhu C. [1 ]
Gong B. [1 ]
Cheng Q. [2 ]
Jiang Q. [1 ]
Wang X. [1 ]
Huang Z. [1 ]
机构：
[1] State Grid Shanghai Electric Power Company, Shanghai
[2] School of Automation Engineering, Shanghai University of Electric Power, Shanghai
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2023年 / 27卷 / 11期
关键词：
modular multi-level converter; non-ideal power grid voltage; passivity-based control; sliding mode control; unified power quality controller;
D O I：
10.15938/j.emc.2023.11.019
中图分类号：
学科分类号：
摘要：
A passivity-based control-sliding-mode control (PBC-SMC) strategy combining passivity-based control (PBC) and sliding-mode control (SMC) was proposed to improve the power quality of MMC-UPQC, which is a combination of modular multi-level converters (MMC) and unified power quality controllers (UPQC) under non ideal grid voltage conditions. The power quality of MMC-UPQC was not ideal due to the use of a single PID control, PBC control, and SMC control. Firstly, the overall mathematical model of MMC-UPQC is derived when the voltage of the power grid was unbalanced, and the positive and negative sequence of voltage and current were separated; Then, in response to the existing problems in the compensation effect of the current single control method, a PBC-SMC control strategy of MMC-UPQC was proposed to improve the voltage, current, and power quality; Finally, correctness and feasibility of the proposed PBC-SMC control strategy was verified on MATLAB / Simulink simulation. The MMC-UPQC system based on PBC-SMC control can effectively compensate for voltage and current, improve power quality, and has stronger anti-interference, higher accuracy, and faster response characteristics compared to PID control and PBC control. © 2023 Editorial Department of Electric Machines and Control. All rights reserved.
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页码：192 / 202
页数：10
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