Design of Driving and protection circuit for Submodule based on cascaded H-bridge STATCOM

[摘要] Driving and protection circuit is an important part of power electronics, which is related to safe and stable operation issues in the power electronics. The driving and protection circuit is designed for the cascaded H-bridge STATCOM in this paper. The circuit can realize flexible dead-time setting, operation status self-detection, fault priority protection and detailed fault status uploading. It can help to improve the reliability of STATCOM's operation. Finally, the proposed circuit is tested and analysed by power electronic simulation software PSPICE (Simulation Program with IC Emphasis) and a series of experiments. Further studies showed that the proposed circuit can realize drive and control the H-bridge circuit, meanwhile it also can realize fast processing faults and have advantage of high reliability.

[发布机构] NARI Group Corporation/State Grid Electric Power Research Institute, Nanjing, Jiangsu; 211106, China^1;China EPRI Science and Technology Co., Ltd., Changping District, Beijng, 102200, China^2;New Energy Research Institute, School of Electrical Engineering, Beijing Jiaotong University, Haidian, Beijing; 100044, China^3

[效力级别] 电工学

[关键词] Cascaded H-bridge;H bridge circuits;High reliability;Operation status;Power electronic simulation;Protection circuits;Simulation program;Stable operation