Mission Profile Emulation for SM in MMC Connected with Photovoltaic Power Station

Advanced test and lifetime prediction of Submodules (SMs) in Modular Multilevel Converter based High Voltage Direct Current Transmission (MMC-HVDC) are crucial for the reliability of the whole system. However, the conventional control strategy that widely adopted in the existing testing system cannot reflect the complicated behaviors of MMC-HVDC and guarantee the accuracy of testing conditions during dynamic operations. Thus, a new control strategy of the testing system for SMs in MMC connected with photovoltaic (PV) power system is proposed, which integrates the behaviors of the whole MMC-HVDC and improves the emulation accuracy during dynamic operations.