Fast Response Control of Three-Phase CSR Under Grid Voltage Sag
摘要
In this article, a fast response control strategy (FRCS) of three-phase current source rectifier (CSR) is proposed to cope with grid voltage sag. The AC voltage is sampled to get the phase voltage amplitude, and the closed-loop reference voltage signal is obtained by combining the rectifier regulation equation. In order to improve the response speed of the control loop under grid voltage sag, a fast response mechanism is introduced. Simulations and experiments are carried out to verify the correctness of the proposed method.