Research on Reducing Torque Ripple of DTC Fuzzy Logic-based
The direct torque control (DTC) technique has been widely used as a control strategy for motor drive system. High torque ripple is a major problem when the motor is running at low speed in DTC system. By analyzing the causes of torque ripple, it is can be found that the change of the speed error signal is a good indicator to determine the situation of motor torque ripple. In this paper, a DTC strategy with a fuzzy logic controller has been proposed. The inputs of the fuzzy controller are the speed error signal and the change rate of current signal. The output is incremental value of the torque hysteresis amplitude. Dynamic adjustment of the torque hysteresis amplitude is the ultimate goal. The simulation results show that the DTC system with hysteresis amplitude adjustment fuzzy logic controller can reduce the pulsation of the motor torque and flux, and improve the performance of low-speed operating conditions.
fuzzy logic torque hysteresis amplitude adjustable direct torque control
Gao Sheng-wei Wang You-Hua Cai Yan Zhang Chuang
Province-Ministry Joint Key Laboratory of EF and EAR.Hebei University of Technology Tianjin, China S Province-Ministry Joint Key Laboratory of EF and EAR.Hebei University of Technology Tianjin, China School of Electrical Engineering and Automation Tianjin Polytechnic University
国际会议
The 2nd IEEE International Conference on Advanced Computer Control(第二届先进计算机控制国际会议 ICACC 2010)
沈阳
英文
631-634
2010-03-27（万方平台首次上网日期，不代表论文的发表时间）