A Unified Direct Power Control Method for Voltage Type Superconducting Magnetic Energy Storage System

In this paper,the direct power control method of PWM rectifiers is applied in the voltage source converter of the voltage type superconducting magnetic energy storage(SMES) system,a new switching vector table is used in the proposed control method and a direct power control methods for SMES chopper is also proposed.By means of active power,the direct power control method of voltage source converter and chooper is unified and can be used for SMES system.Simulation results show that the above-mentioned unified direct power control method possesses good control performance,so it is extremely suitable to voltage type SMES system.