Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Model Predictive Control of Three-Phase Inverter for Uninterruptible Power Supply Applications under a Hexagonal Input Constraint Region

육각형 입력제약 공간을 이용한 무정전 전원장치의 모델예측제어

  • Kim, Seok-Kyoon (Research Institute of Electric and Information Technology, Seoul National University of Science & Technology) ;
  • Kim, Jung-Su (Department of Electrical and Information Engineering, Seoul National University of Science & Technology) ;
  • Lee, Young Il (Department of Electrical and Information Engineering, Seoul National University of Science & Technology)
  • 김석균 (서울과학기술대학교 전기정보기술연구소) ;
  • 김정수 (서울과학기술대학교 전기정보공학과) ;
  • 이영일 (서울과학기술대학교 전기정보공학과)
  • Received : 2013.11.19
  • Accepted : 2014.01.08
  • Published : 2014.02.01
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Abstract

Using the classical cascade voltage control strategy, this paper proposes an analytical solution to an MPC (Model Predictive Control) problem with a hexagonal input constraint set for the inner-loop to regulate the output voltage of the UPS (Uninterruptible Power Supply). Focus is placed on how to deal with the hexagonal input constraint set without any approximation. Following the conventional cascade voltage control strategy, the PI (Proportional-Integral) controller is used in the outer-loop in order to regulate the output voltage. The simulation results illustrate that the capacitor voltage rapidly goes to its reference in a satisfactory manner while keeping other state variables bounded under an unexpected load changes.

Keywords

References

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