Equalization control strategy of medium voltage direct hanging energy storage system

Abstract

The medium voltage direct hanging energy storage system has been widely used in high capacity applications, which gets rid of power frequency transformer and is of high conversion efficiency. This paper introduces the medium voltage direct hanging energy storage system topology scheme. In order to improve the battery life and capacity utilization, the in-phase and inter-phase battery equalization control strategies are studied. Finally, the simulation results on medium voltage direct hanging energy storage system prove the correctness and effectiveness of the equalization control strategy.

Research on inertial response control technology of high voltage direct hanging energy storage system

“…Some advanced control strategies for the inverter interface need further research and development to improve the inertia response and damping characteristics of the grid connected new energy power station, and escort the safe and stable operation of the large power grid. Therefore, this paper focuses on the grid connection technology of new energy power station based on high voltage direct hanging energy storage system [5], and puts forward the key technology of inertial response control for energy storage to enhance the active support capacity of new energy power station, so that the new energy power station can actively support the stability of grid voltage and frequency, and promote the development of friendly access technology of new energy sources.…”