DSP-Based Direct Source Current Control for Three-Phase Four-Wire Power Coditioner

  • Jeong, C.Y. (Power Electronics Research Division Korea Electrotechnology Research Institute) ;
  • Cho, J.G. (Power Electronics Research Division Korea Electrotechnology Research Institute) ;
  • Baek, J.W. (Power Electronics Research Division Korea Electrotechnology Research Institute) ;
  • Yoo, D.W. (Power Electronics Research Division Korea Electrotechnology Research Institute) ;
  • Song, E.H. (Dept. of Control & Instrumentation Engineering Changwon National University)
  • 발행 : 1998.10.01

초록

A DSP-based source current control for power conditioner is presented to compensate current harmonics and asymmetries of three-phase four-wire emergency generators caused by nonlinear and/or unbalanced loads. There-phase voltage type converter with split-dc-capacitor is adopted as the power circuit and a new direct source current control method is suggested, which simplifies the controller. The proposed control method shapes the generator current sinusoidally inphase with the voltage and allows the generator to supply maximum power even to single phase loads. An IGBT base lookVA prototype with the controller realized with a DSP (TMS320C32) is built and tested to verify the performance of the power conditioner.

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