分数槽集中绕组永磁电机研究

发布时间：2018-01-02 04:19

本文关键词：分数槽集中绕组永磁电机研究　出处：《东南大学》2015年硕士论文　论文类型：学位论文

【摘要】：永磁电机具有体积小、效率高和功率因数高等优点,可广泛地应用于各种工业场合。随着近些年新型永磁材料的出现和大型永磁电机制造技术的不断发展,永磁电机单机容量不断增加。然而,在低速应用场合,传统的整数槽分布绕组永磁电机缺点逐渐凸显,因极数较多导致槽数很多,设计加工难度加大,再考虑到分布绕组端部较长,因此分数槽集中绕组在永磁电机中受到越来越多的关注和采用。本文针对分数槽集中绕组永磁电机的绕组理论、电磁设计、齿槽转矩和不平衡磁拉力开展研究,对于提高这类电机的设计水平并促进其应用具有重要的意义。论文内容主要分为以下几个部分：1、分数槽集中绕组理论研究。主要介绍了分数槽集中绕组的构成条件,提出了一种针对分数槽集中绕组在采用单、双层绕组连接时的绕组排列方法。对任意分数槽集中绕组电机,通过所提出的方法均可完成其绕组排列。通过电势法和公式法分别对分数槽集中绕组电机在采用单、双层绕组排列下的绕组系数进行计算。2、分析了多槽多极非单元永磁电机与其单元电机的内在联系,以其中衍生的非单元永磁电机个数较多且电机绕组因数较高的9槽分数槽集中绕组单元电机为研究对象,进行了电机的本体设计和电磁性能分析。编写了分数槽集中绕组永磁电机电磁设计软件,提高了电机设计的效率。3、围绕9槽分数槽集中绕组单元电机的齿槽转矩开展研究,阐述了其形成机理,并推导解析表达式；研究了9槽8极单元电机与其衍生的非单元电机齿槽转矩的内在联系；重点从极槽配合、槽口宽度、极弧系数、辅助槽等电机具体参数,展开对齿槽转矩的影响分析。4、围绕9槽分数槽集中绕组单元电机的不平衡磁拉力开展研究,阐述了其形成机理,并推导解析表达式；研究了9槽8极单元电机与其衍生的非单元电机不平衡磁拉力的内在联系；着重从不同负载情况、极槽配合、槽口宽度等电机具体参数,展开对不平衡磁拉力的影响分析。
[Abstract]:Permanent magnet motor has the advantages of small size, high efficiency and high power factor. It can be widely used in various industrial occasions. With the emergence of new permanent magnet materials and the continuous development of manufacturing technology of large permanent magnet motor in recent years. The single machine capacity of permanent magnet motor is increasing. However, in low speed application, the shortcomings of traditional integer slot distribution winding permanent magnet motor become more and more obvious. Because of the number of poles, there are many slots, so the design and processing are more difficult. Considering the long end of the distributed winding, the fractional slot concentrated winding has been paid more and more attention and adopted in the permanent magnet motor. This paper aims at the winding theory of the fractional slot concentrated winding permanent magnet motor, electromagnetic design. The research of tooth slot torque and unbalanced magnetic pull is of great significance to improve the design level of this kind of motor and promote its application. The main content of this paper is divided into the following parts: 1. This paper mainly introduces the composing conditions of fractional slot concentrated winding, and puts forward a single one for fractional slot concentrated winding. Method of winding arrangement in connection of double-layer windings. Concentrated winding motor with arbitrary fractional slot. The winding coefficient of fractional slot concentrated winding motor with single or double winding arrangement is calculated by the method of EMF and formula. 2. The relationship between multi-slot multi-pole non-unit permanent magnet motor and its unit motor is analyzed. The research object is 9-slot fractional slot concentrated winding unit motor which has more non-unit permanent magnet motor and higher winding factor. The main body design and electromagnetic performance analysis of the motor are carried out, and the electromagnetic design software of the fractional slot concentrated winding permanent magnet motor is developed, which improves the efficiency of the motor design. 3. Based on the research of the torque of the gear slot of the 9-slot fractional slot concentrated winding unit motor, the formation mechanism of the motor is expounded, and the analytical expression is derived. The internal relationship between 9-slot 8-pole unit motor and its non-unit motor tooth slot torque is studied. Focusing on the pole slot fit, slot width, arc coefficient, auxiliary slot and other specific parameters of the motor, the impact of the gear slot torque analysis .4. The unbalance magnetic pull force of a 9-slot fractional slot concentrated winding unit motor is studied, its formation mechanism is expounded, and an analytical expression is derived. The internal relation between 9-slot 8-pole unit motor and the unbalance magnetic pull force derived from the non-unit motor is studied. The influence of different load, pole slot fit and slot width on the unbalanced magnetic pull force is analyzed.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM341

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