Typical Fault Analysis of Power Module of Half-Bridge Flexible DC Converter
This paper elaborates the basic topology and operating condition of half-bridge Modular Multilevel Converters(MMC)commonly used in flexible DC engineering,analyzes the fault characteristics,power failure inspection methods,and failure causes of several typical power modules,such as direct short-circuit faults,single transistor breakdown faults,instantaneous direct short-circuit faults,and communication faults,commonly found in insulated gate bipolar transistors(IGBT)in engineering sites.Operation and maintenance suggestions are proposed for various typical faults to improve the operational reliability of flexible DC projects.
modular multilevel converterflexible DC transimissionpower module faultdirect short-circuit of IGBT
万方数据
维普
