Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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A Performance Improvement Method of PMSM Torque Control Considering DC-link Voltage Variation

DC-link 전압변동을 고려한 PMSM 토크제어의 성능 향상 방법

  • 이정효 (LG이노텍 차량부품개발4팀) ;
  • 원충연 (성균관대학교 정보통신대학)
  • Received : 2014.10.20
  • Accepted : 2014.11.21
  • Published : 2014.11.28
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Abstract

This paper proposes a PMSM torque control method considering DC-link voltage variation and friction torque. In general EV/HEV application, two dimensions look-up table(2D-LUT) is used for reference current generation due to its stable and robust torque control performance. Conventionally, this 2D-LUT is established by flux-torque table to overcome the DC-link voltage variation. However, the flux table establishment is more complex than the speed table establishment. Moreover, one flux data reflects several speed conditions in variable DC-link voltage, friction torque cannot be considered by using the flux table. In this paper, speed-torque 2D-LUT is used for current reference generation. With this table, PMSM torque control is well achieved regardless of DC-link voltage variation by the proposed control method. Simulation and experimental results validate improvement of torque control error through friction torque compensation.

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References

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