Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (11): 83-87，106.

• Power & Electrical Engineering • Previous Articles     Next Articles

Sliding-Mode Variable-Structure Direct Power Control of Three-Phase Voltage Source PWM Rectifier

Wang Wan-wei  Yin Hua-jie  Guan Lin   

  1. School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-12-30 Revised:2009-04-15 Online:2009-11-25 Published:2009-11-25
  • Contact: 汪万伟（1982-），男，博士生，主要从事电力电子和电力传动研究． E-mail:wang．wanwei@mail．scut．edu．cn
  • About author:汪万伟（1982-），男，博士生，主要从事电力电子和电力传动研究．
  • Supported by:

    国家自然科学基金资助项目（50777022）

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Abstract:

Proposed in this paper is a direct power control scheme for three-phase PWM rectifiers based on the sliding-mode variable-structure control theory. In this scheme, the slide-mode variable-structure control system with strong robustness, excellent dynamic performance and simple parameter tuning is employed to remedy the shortcomings of the conventional direct power control system based on PI algorithms, namely high sensitivity to external disturbances and PI parameters and large total harmonic distortion （THD） of line current. Then, both the proposed and the conventional PI-based control schemes for three-phase PWM rectifiers are modeled and compared in Matlab/Simulink simulation environment. The results show that the proposed scheme is superior to the conventional one.

Key words: PWM rectifier, PI controller, direct power control, sliding-mode variable structure, simulation