Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Leg-By-Leg-Based Finite-Control-Set Model Predictive Control for Two-Level Voltage-Source Inverters

  • Zhang, Tao (School of Electrical Engineering, Dalian University of Technology) ;
  • Chen, Xiyou (School of Electrical Engineering, Dalian University of Technology) ;
  • Qi, Chen (School of Electrical Engineering, Dalian University of Technology) ;
  • Lang, Zhengying (School of Electrical Engineering, Dalian University of Technology)
  • Received : 2019.01.16
  • Accepted : 2019.05.18
  • Published : 2019.09.20
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Abstract

Finite-control-set model predictive control (FCS-MPC) is a promising control scheme for two-level voltage-source inverters (TL-VSIs). However, two main issues arise in the classical FCS-MPC method: an exponentially-increasing computational time and a low steady-state performance. To solve these two issues, a novel FCS-MPC method has been proposed for n-phase TL-VSIs in this paper. The basic idea of the proposed method is to carry out the FCS-MPC scheme of TL-VSIs for one leg by one leg, like a "pipeline". Based on this idea, the calculations are reduced from exponential time to linear time and its current waveforms are improved by applying more switching states per sampling period. The cases of three-phase and five-phase TL-VSIs were tested to verify the effectiveness of proposed method.

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