Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Transient Response Improvement at Startup of Three Phase AC
Authors Soo-Cheol Shin ; Hee-Jun Lee ; Jung-Hyo Lee ; Jong-Kuk Na ; Chung-Yuen Won
DOI 10.6113/TKPE/2013.18.2.138
Page pp.138-144
ISSN 1229-2214
Keywords DC distribution; AC/DC converter; sliding-mode control; soft start method
Abstract Most of the DC loads have had the sensitive characteristics electrically for input voltage. In this system, power converter is operated after connecting with DC loads to minimize the overshoot of the control voltage that may occur during connection of the loads. But whenever starting the power converter, parameters in circuit are different because power converter has been connected with diverse load types at each startup time. This is cause of a disadvantage to PI controller design of power converter. In this paper, the novel voltage control method using sliding mode control theory has proposed. This control method minimizes the overshoot of control voltage at startup of power converter. Despite the variations of the system parameters, the proposed voltage controller has fast response and robustness characteristics such as PI and sliding mode controllers. The proposed controller was applied to the three-phase AC/DC converter and each performance of controller was verified.