Research and development of high-power power conversion system 630kW PCS System

As the interface between the power grid and the battery, the power conversion system(PCS) can realize the energy exchange between the battery system and the power grid by controlling the charging and discharging process of the battery, and can also directly supply power to the AC load in the case of no grid. This paper takes T -type three-level energy storage converter as the research object, studies its control strategy, and develops a 630kW high-power energy storage converter experimental device according to the design principles of industrial devices, realizing the stable and off-grid operation of the energy storage converter.