Abstract
Modular Multilevel Converter (MMC) has been widely used in medium/high voltage direct current transmission, motor drive, and renewable energy power generation, etc. The reliability requirements of MMC system which is composed of sub-modules(SM) as building blocks, are getting crucial. However, the testing for reliability of SMs in a full MMC system is time consuming and costly. In this paper, a mission profile emulator for SMs in MMC system is therefore focused, by using this mission profile emulator, the SMs can be tested individually without building a full MMC system. Simulation results show that the mission profiles of the SM under test is well agrees with the SM in a complete MMC system.
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