Abstract：With the development of the smart grid construction, flexible HVDC technology is from researching to the engineering application. Modular multilevel converter (MMC) technology is the most advanced technology for flexible HVDC. MMC module based on IEGT is researched and development. Its topology structure is designed. The parameters of key components as IEGT, DC capacitor, diode and discharge resistance are chose. A variety of function test is made for MMC module. Converter test and thermal stability test are select to analyze. The optimized for circuit design is changed by converter test. The current-carrying capacity of power module is measured through thermal test. Experimental results show that IEGT-MMC module design is reasonable. And it can satisfy all kinds of continuous and stable operation for common conditions.
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2014, Vol. 15 
