基于二极管不控整流桥和MMC的新型大功率整流电路损耗特性研究  

Research on Loss Characteristics of Novel High Power Rectifier Circuit Based on Diode Uncontrolled Rectifier Bridge and MMC

作　　者：张翀 梁一桥[2] 李强 ZHANG Chong;LIANG Yiqiao;LI Qiang(State Key Laboratory of Advanced Power Transmission Technology(Global Energy Interconnection Research Institute Co.,Ltd.),Beijing102209,China;Zhejiang University,Hangzhou310015,China)

机构地区：[1]先进输电技术国家重点实验室(全球能源互联网研究院有限公司),北京102209 [2]浙江大学,杭州310015

出　　处：《电力电容器与无功补偿》2022年第2期105-111,共7页Power Capacitor & Reactive Power Compensation

摘　　要：本文对由二极管不控整流桥和MMC(Modular multilevel converter)构成的新型大功率整流电路的损耗特性进行理论分析研究。首先,详细介绍该电路的拓扑结构及其两种不同工作模式,设计其控制策略并进行仿真验证。然后,理论分析推导了MMC子模块中IGBT/Diode的开关损耗、通态损耗的计算表达式。最后,在PSCAD/EMTDC软件中搭建10kV系统仿真算例,对其子模块各个开关器件的开关损耗和通态损耗及总损耗进行定量分析。本文的研究为后续装置的散热系统设计提供了有力的理论依据。In this paper,the loss characteristics of the novel high-power rectifier circuit,consisting of diodebridge and MMC,are analyzed and studied theoretically. Firstly,the topology and its two operating modes are introduced. Its control strategy is designed and the simulation is performed.Then,the calculation expression of the switching loss and conduction loss of IGBT/Diode in the MMC sub-model are derived theoretically.Finally,the 10 kV system simulation example is set up in PSCAD/EMTDC software to analyze quantitatively the switching loss,conduction loss and the total loss of each switch element in the sub-model. The study in this paper provides a strong theoretical basis for the design of heat-dissipation system of the follow-up devices.

关 键 词：二极管不控整流 全桥MMC 通态损耗 开关损耗 

分 类 号：TM461[电气工程—电器]