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자속 포화에 의한 PMSM 센서리스 위치 추정 오차 분석 및 보상 기법

Analysis of Estimated Position Error by Magnetic Saturation and Compensating Method for Sensorless Control of PMSM

  • Park, Byung-Jun (School of Energy Engineering, Kyungpook National University) ;
  • Gu, Bon-Gwan (School of Energy Engineering, Kyungpook National University)
  • 투고 : 2018.06.22
  • 심사 : 2018.11.20
  • 발행 : 2019.03.01

초록

For a pump or a compressor motor, a high periodic load torque variation is induced by the mechanical works, and it causes system vibration and noise. To minimize these problems, load torque compensation method, injecting periodic torque current, could be utilized. However, with the sensorless control method, which is usually utilized in the pump and compressor for low cost, the periodic torque current degrades the accuracy of the rotor position estimation owing to the inductance variation. This paper analyzes the rotor position and speed estimation error of sensorless control method with constant motor parameters under period loading. Assuming the constant speed by the accurate load torque compensation, the speed error equation is derived in frequency domain with inductance depending on the stator current. Further, it is also shown that the rotor position error could be minimized by compensating the inductance variation. The simulation and experimental results verify that the derived speed error model and the validity of the inductance compensation method.

키워드

과제정보

이 논문은 2017년도 정부(교육부)의 재원으로 한국 연구재단의 지원을 받아 수행된 기초연구사업임(No. NRF-2017R1D1A3B03030254). 본 연구는 2016년도 중소벤처기업부의 기술개발사업 지원에 의한 연구임[S2449721].

참고문헌

  1. S. Morimoto, K. Kawamoto, M. Sanada, and T. Takeda, "Sensorless control strategy for salient-pole PMSM based on extended EMF in rotating reference frame", IEEE Ind. Appl, Vol 38, No. 4, pp. 1054-1061, Jul/Aug. 2002. https://doi.org/10.1109/TIA.2002.800777
  2. R. Mizutani, T. Takeshita, and N. Matsui, "Current model-based sensorless drives of salient-pole PMSM at low speed and standstill", IEEE Trans. Ind. Appl, Vol. 34, pp. 806-812, July/Aug. 1998. https://doi.org/10.1109/28.703980
  3. Zhiqian Chen, M. Tomita, S. Doki and S. Okuma, "An extended electromotive force model for sensorless control of interior permanent-magnet synchronous motors," IEEE Transactions on Industrial Electronics, vol. 50, no. 2, pp. 288-295, Apr. 2003. https://doi.org/10.1109/TIE.2003.809391
  4. Y. Imaeda, S. Doki, M. Hasegawa, K. Matsui, M. Tomita and T. Ohnuma, "PMSM position sensorless control with extended flux observer," IECON 2011-37th Annual Conference of the IEEE Industrial Electronics Society, Melbourne, VIC, pp. 4721-4726, Nov. 2011.
  5. H. Lin, K. Y. Hwang, B. I. Kwon, "An Improved Flux Observer for Sensorless Permanent Magnet Synchronous Motor Drives with Parameter Identification", Journal of Electrical Engineering & Technology, Vol. 8, No. 3, pp. 516-523, May. 2013. https://doi.org/10.5370/JEET.2013.8.3.516
  6. S. K. Lim, J. Y. Lim, and T. Y. Park, "Load Torque Compensation for Low Vibration & Low Speed Control of Air-Con single Rotary Compressor", Power Electronics Annual Conference, pp. 334-336, Jul. 2010.
  7. C. M. Young, C. C. Liu, and C. H. Liu, "Vibration analysis of rolling piston-type compressors driven by single-phase induction motor", in Proc. IECON'93, Vol. 2, pp. 918-923, Nov. 1993.
  8. S. C. Lee and Y. S. Jung, "Study on Speed Ripple Reduction Algorithm in Sensorless Controlled IPMSM", Transactions of the Korean Institute of Power Electronics, Vol. 21, No. 3, pp. 249-253, June. 2016. https://doi.org/10.6113/TKPE.2016.21.3.249
  9. B. G. Gu, "Online load torque ripple compensator for single rolling piston compressor", Transactions of the Korean Institute of Power Electronics, Vol. 19, No. 5, pp. 457-462, Oct. 2014. https://doi.org/10.6113/TKPE.2014.19.5.457
  10. B. J. Hyon, K. H. Nam, "Online parameter estimation for sensorless control of IPMSM", Power Electronics Annual Conference, pp. 567-568, July. 2011.
  11. J. H. Won, C.H. Kim, H. J. Park, H. W. Ahn, S. Y. Cho, J. Lee, "On-line parameter estimation of IPMSM using estimated flux", The Korean Institute of Electrical Engineers Annual Conference, pp. 898-899, July. 2014.