Direct Torque Control of Asynchronous Motor Based on Flux Auto Switching

摘要：

Based on the theory of direct torque control, the simulation model of asynchronous motor is designed to solve two problems. The one is that asynchronous motor in high speed, if a single circular flux control method used, its switching losses will be great; the other one is that asynchronous motor in low speed, if a single hexagonal flux control method used, it will make a large harmonic current. So double modes are used in solve problems together in this paper. That is when asynchronous motor runs at low speed circular flux control strategy is adopted, and when it runs at high speed hexagon flux control strategy is adopted. Auto-switch between circular flux control strategy and hexagon flux control strategy is achieved. Simulation results show that not only the harmonic current can be reduced, and the switching losses are reduced effectively by smooth switching the two control strategies.

关键词： Asynchronous motor Direct torque control Auto-switch

作者: Shiqiu LI Shuai HAO Xu MA Yongmei CHENG

作者单位: College of Automation, Northwestern Polytechnical University, Xian, China

会议类型: 国际会议

会议名称: 2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)

会议地点: 广州

会议语种:英文

页码: 1693-1696

在线出版日期: 2011-11-18（万方平台首次上网日期，不代表论文的发表时间）