The Research on the Brushless DC Motor Double-loop Speed Control System for Torque Ripple Reduction
Li Zhenguo1,Zhou Shenghai2,Wang Jianghao1,Fang Yiming1
1.Key Lab of Power Electronics for Energy Conservation and Motor Drive of Hebei Province Yanshan University Qinhuangdao 066004 China; 2.State Grid Jibei Electric Power CO.,LTD.Maintenance Branch Beijing 102488 China
Abstract：This paper mainly describes a torque ripple reduction strategy for the brushless DC motor double-loop speed control system.In the traditional double-loop speed control system,brushless DC motor has large torque ripple because of the non-ideal trapezoidal wave back EMF and the non-ideal square wave phase current.So this paper proposes a control method combining the phase current shaping with the new half-bridge PWM mode.The phase current shaping method using line EMF constant can mitigate the torque ripple caused by the non-ideal trapezoidal wave back EMF.The new half-bridge PWM mode,obtained by analyzing the phase current commutation process,will decrease the commutation torque ripple due to the non-ideal square wave phase current.Finally,simulations with Matlab and experiment results with DSP,operating in four-quadrant operation,are presented to verify the feasibility and effectiveness of the proposed strategy.
李珍国, 周生海, 王江浩, 方一鸣,. 无刷直流电动机双闭环调速系统的转矩脉动抑制研究[J]. 电工技术学报, 2015, 30(15): 156-163.
Li Zhenguo,Zhou Shenghai,Wang Jianghao,Fang Yiming. The Research on the Brushless DC Motor Double-loop Speed Control System for Torque Ripple Reduction. Transactions of China Electrotechnical Society, 2015, 30(15): 156-163.
[1] 夏长亮,方红伟.永磁无刷直流电机及其控制[J].电工技术学报,2012,27(3):25-34. Xia Changliang,Fang Hongwei.Permanent-magnet brushless DC motor and its control[J].Transactions of China Electrotechnical Society,2012,27(3):25-34. [2] Park S J,Park H W,Lee M H,et al.A new approach for minimum-torque-ripple maximum-efficiency control of BLDC motor[J].IEEE Transactions on Industrial Electronics,2000,47(1):109-114. [3] Wu A P,Chapman P L.Simple expressions for optimal current waveforms for permanent-magnet synchronous machine drives[J].IEEE Transactions on Energy Conversion,2005,20(1):151-157. [4] Zhu Z Q,Liu Y,Howe D.Comparison of performance of brushless DC drives under direct torque control and PWM current control[C].Kiee International Transactions on Electrical Machinery and Energy Conversion Systems,2005,5-B:337-342. [5] Liu Y,Zhu Z Q,Howe D.Commutation-torque- ripple minimization in direct-torque-controlled PM brushless DC drives[J].IEEE Transactions on Industry Applications,2007,43(4):1012-1021. [6] Ozturk S B,Toliyat H A.Direct torque and indirect flux control of brushless DC motor[J].IEEE Transactions on Mechatonics,2011,16(2):351-360. [7] Gao J,Hu Y.Direct self-control for BLDC motor drives based on three-dimensional coordinate system[J].IEEE Transactions on Industrial Electronics,2010,57(8):2836-2844. [8] 李珍国,章松发,周生海,等.考虑转矩脉动最小化的无刷直流电机直接转矩控制系统[J].电工技术学报,2014,29(1):139-146. Li Zhenguo,Zhang Songfa,Zhou Shenghai,et al.Direct torque control of brushless DC motor considering torque ripple minimization[J].Transactions of China Electrotechnical Society,2014,29(1):139-146. [9] 张相军,陈伯时.无刷直流电机控制系统中PWM 调制方式对换相转矩脉动的影响[J].电机与控制学报,2003,7(2):87-91. Zhang Xiangjun,Chen Boshi.The different influences of four PWM modes on commutation torque ripples in brushless DC motor control system[J].Electric Machines and Control,2003,7(2):87-91. [10]石坚,李铁才.一种消除无刷直流电动机换相转矩脉动的PWM调制策略[J].中国电机工程学报,2012,32(24):110-116. Shi Jian,Li Tiecai.A PWM strategy to eliminate commutation torque ripple of brushless DC motors[J].Proceedings of the CSEE,2012,32(24):110-116. [11]王大方,卜德明,朱成,等.一种减小无刷直流电机换相转矩脉动的调制方法[J].电工技术学报,2014,29(5):160-166. Wang Dafang,Bu Deming,Zhu Cheng,et al.A modulation method to decrease commutation torque ripple of brushless DC motors[J].Transactions of China Electrotechnical Society,2014,29(5):160-166.
2015, Vol. 30 
