基于面积等效法的模块化多电平换流器损耗分析_刘栋.pdf

36 4 Vol. 36 No. 4 2012 4 Power System Technology Apr. 2012 100004-0197-05 TM 761 A 470·4031 1 1 1 1 2 2 2 1 100192 2 200122 Loss Evaluation for Modular Multilevel Converter Based on Equivalent-Aera Modulation 1 1 1 1 2 2 2 LIU Dong , TANG Guangfu , HE Zhiyuan , ZHAO Yan , HE Weiguo , HUA Bin , BAO Hailong (1. China Electric Power Research Institute, Haidian District, Beijing 100192, China; 2. Shanghai Electrical Power Company, Pudong District, Shanghai 200122, China) ABSTRACT: The result of the research on the loss of the modular multilevel converter (MMC) based valve for HVDC power transmission is seldom reported. Due the distinctive [1-3] feature of MMC topology, the methods to calculation the loss of traditional loss calculation methods for thyristors and (voltage insulate gate bipolar transistors (IGBT) cannot be directly source converter based HVDCVSC-HVDC) applied to MMC valve. Combining with the switching characteristic of the distinctive semiconductor devices of the , sub-module of MMC valve, the physical process of switching on/off the sub-module of MMC valve is analyzed; considering the topological structure of the converter and equivalent-area (Insulated Gate Bipolar modulation algorithm, the relation among the loss of MMC TransistorIGBT) dv / dt valve and its valve current, and modulation algorithm voltage under typical operating condition is derived. The research