Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2014.9.5.1569
Title & Authors
Torque Ripple Minimization in Direct Torque Control of Brushless DC Motor Li, Zhenguo; Zhang, Songfa; Zhou, Shenghai; Ahn, Jin-Woo;
This paper mainly proposes a direct torque control strategy to minimize torque ripple in brushless DC (BLDC) motor. BLDC motor has large current and torque ripple when one voltage vector applied in one cycle due to its low inductance. Hence, this paper proposed a hysteresis torque control with PWM mode to control the resultant torque. Moreover, when the direct torque control system is operating during the two-phase half-bridge conduction mode, large torque ripple in commutation area appears every 120 electrical degree. Based on analyzing the root of torque ripple in detail, lookup tables of switching devices states for new half-bridge modulation mode in the positive and negative reference torque put forwarded. Finally, simulations by MATLAB software and experiment results from DSP are presented to verify the feasibility and effectiveness of the proposed strategy operating in four-quadrant operation.
Brushless DC Motor (BLDCM);Direct Torque Control (DTC);Torque ripple minimization;Four-quadrant operation;
Takashi Kenjo and Shigenobu Nagamori, "Brushless motors: advanced theory and modern applications," Tokyo, Japan: Sogo Electronics Press, 2003.
Liu Yong, Zhu Z Q and Howe D, "Direct torque control of brushless DC drives with reduced torque ripple," IEEE Trans. On Industry Applications, vol. 41, no. 2, pp. 599-608, 2005.
Liu Yong, Zhu Z Q and Howe D, "Commutationtorque- ripple minimization in direct-torque-controlled PM brushless DC drives," IEEE Trans. On Industry Applications, vol. 43, no. 4, pp. 1012-1021, 2007.
Ozturk S.B., and Toliyat H.A, "Direct Torque and Indirect Flux Control of Brushless DC Motor," IEEE Trans. on Mechatonics, vol. 16, no. 2, pp. 351-360, 2011.
Gao Jin and Hu Yuwen, "Direct self-control for BLDC motor drives based on three-dimensional coordinate system," IEEE Trans. on Industrial Electronics, vol. 57, no. 8, pp. 2836-2844, 2010.
An Quntao, Sun Lizhi, Liu Chao and Sun Li, "Flux linkage self-control based direct torque control of brushless DC motor," Proceedings of the CSEE, vol. 30, no. 12, pp. 86-92, 2010.
Seog-Joo Kang and Seung-Ki Sul, "Direct torque control of brushless DC motor with nonideal trapezoidal back EMF," IEEE Trans. on Power Electronics, vol. 10, no. 6, pp. 796-802, 1995.
Zhenguo Li, Lu Wang, Songfa Zhang, Chunjiang Zhang, and Jin-Woo Ahn, "Torque Ripple Reduction in Direct Torque Controlled Brushless DC Motor," ICEMS2011, 2011.