Closed Loop Control Strategy to Correct the Commutation Error of High-Speed Magetically Suspended Brushless DC Motors without Position Sensor
Liu Gang1, 2, Cui Chenjun1, 2, Han Bangcheng1, 2, Zheng Shiqiang1, 2, Wang Kun1, 2
1. Science and Technology on Inertial Laboratory Beihang University Beijing 100191 China; 2. Novel Inertial Instrument & Navigation System Technology Key Laboratory of Fundamental Science for National Defense Beihang University Beijing 100191 China
Abstract：This paper analyzes the exact expression of the non-commutation phase current considering the commutation error in PAM modulation mode of high-speed magnetically suspended brushless DC motor based on the line-to-line back-EMFs and points out that the commutation process of high-speed motor is very short. Then this paper proposes a new closed loop control method to correct the commutation error according to this conclusion. The method takes the equivalent phase current integration of non-commutation phase within the range of 30° before and after the commutation as the target and takes the phase current integration difference of non-commutation phase as the feedback amount, and corrects the commutation error automatically through the PI regulator. Applying the optimal hysteresis transition between‘90-α’and‘150-α’ensures the reliable correction of the commutation error. The experimental results show that this closed loop commutation correction strategy realizes the real-time compensation for the commutation error within the scope of 3 2000r/min.
刘刚, 崔臣君, 韩邦成, 郑世强, 王坤. 高速磁悬浮无刷直流电机无位置换相误差闭环校正策略[J]. 电工技术学报, 2014, 29(9): 100-109.
Liu Gang, Cui Chenjun, Han Bangcheng, Zheng Shiqiang, Wang Kun. Closed Loop Control Strategy to Correct the Commutation Error of High-Speed Magetically Suspended Brushless DC Motors without Position Sensor. Transactions of China Electrotechnical Society, 2014, 29(9): 100-109.
[1] 李志强, 夏长亮, 陈炜. 基于线反电动势的无刷直流电机无位置传感器控制[J]. 电工技术学报, 2010, 25(7): 39-25. Li Zhiqiang, Xia Changliang, Chen Wei. A position sensorless control strategy for BLDCM based on line back-EMF[J]. Transactions of China Electrotechnical Society, 2010, 25(7): 39-44. [2] Cheng Tsung Lin, Chung Wen Hung, Chih Wen Liu, Sensorless control for four-switch three-phase brushless DC motor drive[C]. IEEE IAS Annual Meeting on Industry Applications Conference, Tampa, 2006, 4: 2048-2053. [3] 张磊, 瞿文龙, 陆海峰, 等. 一种新颖的无刷直流电机无位置传感器控制系统[J]. 电工技术学报, 2006, 21(10): 26-30, 43. Zhang Lei, Qu Wenlong, Lu Haifeng, et al. A novel sensorless control system of brushless DC motors[J]. Transactions of China Electrotechnical Society, 2006, 21(10): 26-30, 43. [4] 韦鲲, 任军军, 张仲超. 三次谐波检测无刷直流电机转子位置的研究[J]. 中国电机工程学报, 2004, 24(5): 163-167. Wei Kun, Ren Junjun, Zhang Zhongchao. Research on the scheme of sensing rotor position of BLDCM based on the third harmonic component[J]. Proceedings of the CSEE, 2004, 24(5): 163-167. [5] Shen J X, Iwasaki S. Sensorless control of ultrahigh- speed PM brushless motor using PLL and third harmonic back-EMF[J]. IEEE Transactions on Industrial Electronics, 2006, 53(2): 421-428. [6] Jahns T M, Becerra R C, Ehsani M. Integrated current regulation for a brushless ECM drive[J]. IEEE Transac- tions on Power Electronics, 1991, 6(1): 118-126. [7] 周波, 魏佳. 反电势逻辑电平积分比较法实现的无刷直流电机无位置传感器控制[J]. 电工技术学报, 2000, 15(4): 5-9, 4. Zhou Bo, Wei Jia. A new method of indirect sensing for rotor flux position of a sensorless brushless DC motor[J]. Transactions of China Electrotechnical Society, 2000, 15(4): 5-9, 4. [8] Ertugrul N, Acarnley P. A new algorithm for sensorless operation of permanent magnet motors[J]. IEEE Transactions on Industry Applications, 1994, 30(1): 126-133. [9] Ogasawara S, Akagi H. An approach to position sensorless drive for brushless DC motors[J]. IEEE Transactions on Industry Applications, 1991, 27(5): 928-933. [10] 夏长亮, 王娟, 史婷娜, 等. 基于自适应径向基函数神经网络的无刷直流电机直接电流控制[J]. 中国电机工程学报, 2003, 23(6): 123-l27. Xia Changliang, Wang Juan, Shi Tingna, et al. Direct control of currents based on adaptive RBF neural network for brushless DC motors[J]. Proceedings of the CSEE, 2003, 23(6): 123-127. [11] Bozo Terzie, Martin Jadrie. Design and implementation of the extended Kalman filter for the speed and rotor position estimation of brushless DC motor[J]. IEEE Transactions on Industrial Electronics, 2001, 48(6): 1065-1073. [12] 宋飞, 周波, 吴小婧. 校正无位置传感器无刷直流电机位置信号相位的闭环控制策略[J]. 中国电机工程学报, 2009, 29(12): 52-56. Song Fei, Zhou Bo, Wu Xiaojing. Closed loop control method to correct position phase for sensorless brushless DC motor[J]. Proceedings of the CSEE, 2009, 29(12): 52-56, 43. [13] 吴小婧, 周波, 宋飞. 基于端电压对称的无位置传感器无刷直流电机位置信号相位校正[J]. 电工技术学报, 2009, 29(4): 55-57. Wu Xiaojing, Zhou Bo, Song Fei. A new control method to correct position phase for sensorless brushless DC motor[J]. Transactions of China Electrotechnical Society, 2009, 29(4): 55-56, 43. [14] Song Joong Ho, Choy Ick. A rotor position sensorless control based on neutral voltage compensation of brushless DC motors[C]. PESC04, South Korea, 2004, 2: 1431-1437. [15] Jianwen Shao, Dennis Nolan, Mamime Tsissier, et al. A novel microcontroller-based sensorless brushless DC(BLDC) motor drive for automotive fuel pumps[J]. IEEE Transactions on Industry Applications, 2003, 39(6): 1734-1740. [16] Jiang Quan, Bi Chao. A new phase-delay-free method to detect back EMF zero-crossing points for sensorless control of spindle motros[J]. IEEE Transactions on Magnetics, 2005, 41(7): 2287-2294. [17] Shen J X, Tseng K J. Analysis and compensation of rotor position detection error in sensorless PM brushelss DC motor drives[J]. IEEE Transactions on Energy Conversion, 2003, 18(1): 87-93. [18] Nobuyuki Kasa, Hiroshi Watanabe. A mechanical sensorless control system for salient-pole brushless DC motor with autocalibration of estimated position angles[J]. IEEE Transactions on Power Electronics, 2000, 47(2): 389-395. [19] 李自成. 无刷直流电机无位置传感器控制关键技术研究[D]. 武汉: 华中科技大学, 2010. [20] Cheng Hu Chen, Ming Yang Cheng. A new cost effective sensorless commutation method for brushless DC motors without phase shift circuit and neutral voltage[J]. IEEE Transactions on Power Electronics, 2007, 22(2): 647-650.
2014, Vol. 29 
