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

The Korean Institute of Power Electronics (전력전자학회)
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Three Phase Current Reconstruction Method of Three Shunt Sensing 3-Phase Inverter by Predictive Current Technique

예측 전류 기법을 적용한 3-션트 전류검출 3상 인버터의 전류 복원 방법

  • Choo, Kyoung-Min (College of Information and Communication Eng. Sungkyunkwan University) ;
  • Hong, Sung-Woo (College of Information and Communication Eng. Sungkyunkwan University) ;
  • Jang, Young-Hee (College of Information and Communication Eng. Sungkyunkwan University) ;
  • Won, Il-Kuen (College of Information and Communication Eng. Sungkyunkwan University) ;
  • Kim, Do-Yun (College of Information and Communication Eng. Sungkyunkwan University) ;
  • Wo, Chung-Yuen (College of Information and Communication Eng. Sungkyunkwan University)
  • Received : 2016.10.01
  • Accepted : 2017.01.11
  • Published : 2017.04.20
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Abstract

The measurement of three-phase current is important to control the instantaneous torque of a interior permanent magnet synchronous motor(IPMSM) using a three-phase inverter. Therefore, shunt resistors are used in low-cost motor-driving systems to measure three-phase current instead of additional current sensors that are too expensive for these systems. However, in certain regions of a space vector plane, shunt resistors cannot reconstruct three-phase current in high-speed driving mode. In this paper, predictive current control is used to compensate for the three-phase current in those regions, which results in a reduction of current ripple in a three-shunt sensing inverter(TSSI) and torque ripple in IPMSM.

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References

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