开关磁链永磁电机的性能分析和齿槽转矩研究
发布时间：2018-08-09 16:13
【摘要】：开关磁链永磁电机是一种新型的双凸极永磁电机,其转子结构简单、无绕组,定子极中间嵌有横向充磁的永磁体,两两相邻的永磁体充磁方向相反,定子绕组为集中绕组。由于开关磁链永磁电机的永磁体位于定子中,较传统转子永磁型电机更可靠,同时具有较高的功率密度、效率以及良好的弱磁能力,对其研究具有重要的理论意义和良好的应用前景。本文的主要工作如下:综述了开关磁链永磁电机的研究意义和发展概况。以三相12/10极开关磁链永磁电机为研究对象,介绍了基本结构和运行原理,讨论了磁路和电路基本方程及机电联系方程,在此基础上推导了基于dq0坐标的电机数学模型,为后续研究奠定了理论基础。基于有限元软件Maxwell对开关磁链永磁电机的静态特性、损耗和效率等进行了仿真分析,基于热传递的基本理论,在ANSYSWorkbench平台中对电机进行了温度场仿真研究。深入研究了开关磁链永磁电机的齿槽转矩。由于开关磁链永磁电机的双凸极结构,使得定子极磁路严重饱和,其齿槽转矩相较于传统的永磁电机要大很多。为降低电机的制造和装配难度,本文采用在定子极加入导磁桥的方法来简化定子结构,对导磁桥的厚度和位置进行了优化设计。提出了四种基于带导磁桥开关磁链永磁电机的短磁体结构,以减小电机的齿槽转矩,利用有限元方法比较研究了四种短磁体结构对齿槽转矩和输出转矩的影响,给出了最优结构方案。设计制造了两台实验样机,对样机的性能、温升和齿槽转矩进行了实验研究,验证了所提方法和仿真分析的正确性。
[Abstract]:Switched flux chain permanent magnet motor is a new type of doubly salient permanent magnet motor with simple rotor structure, no winding, transverse permanent magnet embedded in the middle of the stator pole, two adjacent permanent magnets with opposite direction of magnetization, and the stator winding as a concentrated winding. Since the permanent magnet of the switched flux permanent magnet motor is located in the stator, it is more reliable than the traditional rotor permanent magnet motor, and has higher power density, higher efficiency and better magnetic weakening capacity. It has important theoretical significance and good application prospect. The main work of this paper is as follows: the research significance and development of switched flux permanent magnet motor are summarized. Taking the three-phase 12 / 10 pole switched flux permanent magnet motor as the research object, this paper introduces the basic structure and operation principle, discusses the basic equations of magnetic circuit and circuit, and the electromechanical relation equation. On this basis, the mathematical model of the motor based on dq0 coordinate is derived. It lays a theoretical foundation for further research. Based on the finite element software Maxwell, the static characteristics, loss and efficiency of the switched flux permanent magnet motor are simulated and analyzed. Based on the basic theory of heat transfer, the temperature field of the motor is simulated on the ANSYSWorkbench platform. The slotting torque of switched flux permanent magnet motor is studied in depth. Because of the double salient pole structure of switched flux chain permanent magnet motor, the stator pole magnetic circuit is seriously saturated, and the tooth slot torque is much larger than that of the traditional permanent magnet motor. In order to reduce the difficulty of manufacturing and assembling the motor, the stator structure is simplified by adding a magnetic conduction bridge to the stator pole, and the thickness and position of the magnetic conduction bridge are optimized. Four kinds of short magnet structures based on switched flux chain permanent magnet motor with magnetic conduction bridge are proposed to reduce the slot torque of the motor. The effects of four short magnet structures on the slot torque and the output torque are compared by using finite element method. The optimal structure scheme is given. Two experimental prototypes are designed and manufactured. The performance of the prototype, temperature rise and the torque of the tooth slot are studied experimentally, and the correctness of the proposed method and the simulation analysis are verified.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM351
本文编号：2174638
[Abstract]:Switched flux chain permanent magnet motor is a new type of doubly salient permanent magnet motor with simple rotor structure, no winding, transverse permanent magnet embedded in the middle of the stator pole, two adjacent permanent magnets with opposite direction of magnetization, and the stator winding as a concentrated winding. Since the permanent magnet of the switched flux permanent magnet motor is located in the stator, it is more reliable than the traditional rotor permanent magnet motor, and has higher power density, higher efficiency and better magnetic weakening capacity. It has important theoretical significance and good application prospect. The main work of this paper is as follows: the research significance and development of switched flux permanent magnet motor are summarized. Taking the three-phase 12 / 10 pole switched flux permanent magnet motor as the research object, this paper introduces the basic structure and operation principle, discusses the basic equations of magnetic circuit and circuit, and the electromechanical relation equation. On this basis, the mathematical model of the motor based on dq0 coordinate is derived. It lays a theoretical foundation for further research. Based on the finite element software Maxwell, the static characteristics, loss and efficiency of the switched flux permanent magnet motor are simulated and analyzed. Based on the basic theory of heat transfer, the temperature field of the motor is simulated on the ANSYSWorkbench platform. The slotting torque of switched flux permanent magnet motor is studied in depth. Because of the double salient pole structure of switched flux chain permanent magnet motor, the stator pole magnetic circuit is seriously saturated, and the tooth slot torque is much larger than that of the traditional permanent magnet motor. In order to reduce the difficulty of manufacturing and assembling the motor, the stator structure is simplified by adding a magnetic conduction bridge to the stator pole, and the thickness and position of the magnetic conduction bridge are optimized. Four kinds of short magnet structures based on switched flux chain permanent magnet motor with magnetic conduction bridge are proposed to reduce the slot torque of the motor. The effects of four short magnet structures on the slot torque and the output torque are compared by using finite element method. The optimal structure scheme is given. Two experimental prototypes are designed and manufactured. The performance of the prototype, temperature rise and the torque of the tooth slot are studied experimentally, and the correctness of the proposed method and the simulation analysis are verified.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM351
【参考文献】
相关期刊论文 前5条
1 黄志文;沈建新;汪昱;方宗喜;;永磁开关磁链电机弱磁运行的结构与性能[J];浙江大学学报(工学版);2009年03期
2 李伟力;李守法;谢颖;丁树业;;感应电动机定转子全域温度场数值计算及相关因素敏感性分析[J];中国电机工程学报;2007年24期
3 陆炜;程明;花为;;新型两相磁通切换型永磁电动机调速系统建模与仿真研究[J];微电机;2007年07期
4 费伟中;沈建新;;新型永磁开关磁链电机[J];微特电机;2006年08期
5 花为;程明;D．Howe;;新型磁通切换型双凸极永磁电机的静态特性研究[J];中国电机工程学报;2006年13期
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