Overview of Current Situation of Cascaded Medium and High Voltage Direct-Mounted Energy Storage Technology

Compared with the traditional energy storage system, the cascaded medium and high voltage direct-mounted energy storage system has large capacity, high efficiency and broader development prospects. In this paper, the research status of cascaded medium and high voltage direct hanging energy storage technology is summarized. Firstly, the characteristics and topology of the cascaded direct storage system are briefly introduced, and then the research progress of the system control strategy, main circuit key technical parameter design, battery energy balance control method and other key technologies are emphatically discussed. Finally, the future research direction of the energy storage system is prospected.