摘要
对永磁无刷直流电机的拓扑结构和运行原理进行了研究,给出了一种分数槽电机选取极数和槽数配合减小自定位转矩的方法。为进一步提高电机内部空间利用率,提出了一种双层短距的绕组连接方式。在考虑整个无刷直流电动机系统工作的情况下,以端电压为输入量,采用场路耦合时步有限元法,对一台六极永磁无刷直流电动机的瞬态电磁场进行了计算和仿真分析,并以样机驱动系统作为试验平台,完成了试验验证工作。仿真和试验结果充分证明了所提出方法的正确性和有效性。该电机的应用会加快永磁无刷直流电机在工业领域中的推广、普及,也展示出了其广阔的发展前景。
The topology and operation principle of the permanent-magnet BLDC motor are researched. A method for decreasing cogging torque by cooperating of pole number and slot number is given. To increase the inner space utilization rate and the motor efficiency, the double-layer-and-short-pitch windings are employed. Taking into account the whole permanent magnet BLDC motor system, taking terminal voltage as input quantity, transient electromagnet field of a six poles permanent magnet BLDC motor was calculated and simulated through the circuit-field coupled timestepping finite element method. Then, the driving system of the permanent-magnet BLDC motor was used as experimental platform, and the experimental verification of the research work was completed. Finally, Both simulation and experimental results are given to verify the validity and the efficiency of the proposed machine. The application of the motor will accelerate the popularizing process of the permanent-magnet BLDC motor in the industrial field, and show its broad development prospect.
出处
《电机与控制应用》
北大核心
2009年第7期1-4,13,共5页
Electric machines & control application
基金
国家自然科学基金(60874014)
关键词
永磁无刷直流电机
双层短距
场路耦合
permanent-magnet brushless DC motor
double-layer-and-short-pitch
field-circuit and movement coupled
