The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Transient Response Improvement at Startup of Three Phase AC/DC Converter for DC Distribution System in Building Applications

빌딩용 직류배전 시스템의 3상 AC/DC 컨버터의 기동 시 과도상태 응답 개선

  • Shin, Soo-Cheol (Dept. of Elec. and Computer Eng., Sungkyunkwan Univ.) ;
  • Lee, Hee-Jun (Dept. of Elec. and Computer Eng., Sungkyunkwan Univ.) ;
  • Lee, Jung-Hyo (Dept. of Elec. and Computer Eng., Sungkyunkwan Univ.) ;
  • Na, Jong-Kuk (School of Photovoltaic System Eng., Sungkyunkwan Univ.) ;
  • Won, Chung-Yuen (College of Information and Communication Eng., Sungkyunkwan Univ.)
  • Received : 2012.09.14
  • Accepted : 2012.12.18
  • Published : 2013.04.20
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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.

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References

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