전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제65권4호
  • /
  • Pages.576-585
  • /
  • 2016
  • /
  • 1975-8359(pISSN)
  • /
  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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Y 결선된 7상 BLDC 전동기의 구형파 전류 제어를 위한 새로운 전류 제어방식에 관한 연구

A Study on New Current Control Method for Square Current Wave in Y Connected 7-Phase BLDC Motor Drive System

  • Moon, Jong-Joo (Dept. of Electrical Engineering, Pusan National University) ;
  • Lee, Won (Agency for Defense Development) ;
  • Kim, Jang-Mok (Dept. of Electrical Engineering, Pusan National University)
  • 투고 : 2015.12.09
  • 심사 : 2016.03.02
  • 발행 : 2016.04.01
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초록

The current control methods of Y-connected 7 Phase BLDC motor are sine wave current control and square wave control. The sine wave current control method needs dq axis transformation of $7{\times}7$ matrix for current control and very complex. Also this method is not suitable for multi Phase BLDC motor of trapezoidal back emf wave. Therefore, in Y connected multi phase BLDC motor, the square wave current control methods are required. Generally, in the 3Phase BLDC system, Average current control method is used for current control. The average current is obtained that the summation of absolute value of each phase current magnitude is divided by the number of conduction phase. However, if average current control method is applied to multi-phase system, there is a problem that each phase currents are different. This problem affects unbalance of each phase torque and fluctuation of total torque. This paper proposed each phase current control method of Y connected 7Phase BLDC system. Proposed method is used for PI controller of each phase for each phase current control. This method can perfect square wave current control. Also, configuration of the method is easier than DQ axis transformation. Proposed method is verified through simulation and experiments.

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참고문헌

  1. C. J. Kim, B. H. Kang, H. S. Mok and G. H. Choe, "A Study on the Influence of Commutation Time on Torque Pulsating in BLDCM," trans. on KIEE, vol. 50, No. 1, pp. 23-29, Jan. 2001.
  2. H, A. Tolyat, "Analysis and Simulation of Five Phase Variable Speed Induction Motor Drives Under Asymmetrical Connections," IEEE Trans. on Power Electronics, vol. 13, No. 4, pp. 748-756, 1998. https://doi.org/10.1109/63.704150
  3. I. Tackhashi, "A Super High Speed PM Motor Drive System By a Quasi-Current Source Inverter," IEEE Transactions on Industry Application, vol. 30, No. 3, pp. 683-690, 1994. https://doi.org/10.1109/28.293717
  4. Surk Lee, Ywun-Seok Jeon, Hyung-Soo Mok and Duk-Keun Kim, "A Stydy on New Current Controller for 7-Phase BLDC Motor Drive System," trans. on KIPE, vol. 6, No. 2, pp. 191-201, April 2001.
  5. Hyun-Cheol Kim, Hyung-Sik Oh, Jang-Mok Kim and Cheul-U Kim, "A Study On the Phase Advance Angle of High Speed Operation for 7 Phase BLDC Motor Drives", transactions on KIEE, vol. 56, No. 11, pp. 1930-1936, Nov. 2007.
  6. Tae-Hyung Kim, "Advanced Sensorless Drive Technique for Multiphase BLDC Motors", IEEE Annual Conference IECON, Vol. 1, pp. 926-931, 2004.
  7. Hyung-Min Ryu "Synchronous-Frame Current Control of Multiphase Synchronous Motor Under Asymmetric Fault Condition Due to Open Phases," IEEE Transaction on Inductry Applications, Vol. 42, pp. 1062-1070, 2006. https://doi.org/10.1109/TIA.2006.876074
  8. B. G. Cho, H. J. Y, S. K. Sul, J. G. Bin and J. H. Song, "Torque Ripple Reduction for Multi-Phase BLDC Motor Drive without Neutral Point Connection," Conference of KIPE, pp. 354-356, 2009.
  9. Hyung-Min Ryu, Ji-Woong Kim and Seung-Ki Sul, "Synchronous Frame Current Control of Multi-Phase Synchronous Motor. Part I-Modeling and current control based on multiple d-q spaces concept under balanced condition," Conference record of Annual Meeting of the IEEE IA Society, pp. 69-70, Oct., 2004.
  10. Sang-Hoon Song, Yong-Ho Yoon, Byoung-Kuk Lee and Chung-Yuen Won, "Modeling and Analysis of 7-Phase BLDC Motor Drives," trans. on KIEE, vol. 63, No. 4, pp. 575-582, april. 2014.
  11. Jong-Joo Moon, Won-Sang Lee, Sang-Woo Park and Jang-Mok Kim, "Fault tolerant control method of seven-phase BLDC motor in asymmetric fault condition due to open phase," ICPE-ECCE Asia, 2015 Conf., pp. 1591-1596, June 2015.