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- Title
非理想电网电压下 MMC-UPQC 的 PBC-SMC 控制策略研究.
- Authors
朱纯; 龚波涛; 程启明; 蒋谦; 王晓锋; 黄志豪
- Abstract
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-UP-QC, 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.
- Subjects
SLIDING mode control; PASSIVITY-based control; ELECTRIC power distribution grids; VOLTAGE
- Publication
Electric Machines & Control / Dianji Yu Kongzhi Xuebao, 2023, Vol 27, Issue 11, p192
- ISSN
1007-449X
- Publication type
Article
- DOI
10.15938/j.emc.2023.11.019