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

The Korean Institute of Power Electronics (전력전자학회)
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Controller Design of Stand-Alone or Grid-Connected Inverter to Compensate Harmonics Caused by Nonlinear Load

비선형부하에 의해 발생하는 고조파 보상을 위한 독립형 또는 계통연계형 인버터 제어기 설계

  • Sin, Chanho (School of Electrical Eng., Chungbuk National University) ;
  • Lim, Kyungbae (School of Electrical Eng., Chungbuk National University) ;
  • Petrus, Simatupang Desmon (School of Electrical Eng., Chungbuk National University) ;
  • Choi, Jaeho (School of Electrical Eng., Chungbuk National University)
  • Received : 2017.07.19
  • Accepted : 2017.09.06
  • Published : 2017.10.20
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Abstract

This paper proposes a controller design of a distributed source inverter in stand-alone mode or grid-connected mode to compensate the current or voltage harmonics caused by local nonlinear load. The PR-based multi loop controller has been used to improve the dynamic performance of the system and to compensate the output voltage or grid current harmonics. The multi-loop controller consists of an outer current controller and an inner voltage controller for the output voltage control in stand-alone mode. In grid-connected mode, an outer current controller is added to the output voltage controller for the grid current control. The design performance of each controller is described through the Root locus and Bode plot of the transfer functions. The validity of the proposed control algorithm and design parameters has been verified through the PSiM simulation and experimental results.

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References

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