高速永磁同步电动机转子的设计研究

发布时间：2018-01-14 20:13

本文关键词：高速永磁同步电动机转子的设计研究　出处：《上海交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：永磁同步电动机具有功率密度高、组成简单、运行稳定,低损耗、高效率和控制性能优良等优点,最适合用于高速电机,是高速电机发展的主流方向。高速永磁同步电动机的应用范围极为广泛,已几乎遍及航空航天、国防、工农业生产和日常生活的各个领域。高速永磁电机的设计,尤其是其转子设计有一定的难度。本文主要对高速永磁同步电动机转子设计中的一些关键技术进行了深入研究。第一部分主要研究高速永磁同步电动机转子电磁参数对电机性能的影响。首先,对高速永磁同步电动机转子的两种主要结构型式进行了分析,对比了两者在高速领域的适用范围。接着围绕空载漏磁系数和空载反电势两个影响永磁电机性能的关键参数展开研究,分析了两种转子结构型式对这两个参数的不同影响因素和变化规律。第二部分主要研究高速永磁同步电动机转子结构对机械性能的影响。首先分析了表贴式和内置式两种转子结构型式对高速永磁同步电动机转子强度的不同影响,并针对本文将要设计的两台630k W、8200r/min的高速永磁同步电动机,各采用一种转子结构型式进行分析计算。接着对高速永磁同步电动机转子动力学采用有限元法和解析法进行分析计算,然后从工程应用的角度出发,对转子关键零部件的机械强度进行了分析计算,确保转子设计的安全可靠性。第三部分对高速永磁同步电动机转子的温度场进行了分析研究。永磁电机的转子温度场是在设计中必须要考虑的一个环节。影响高速永磁电机转子温度的两个主要因素是转子涡流损耗和摩擦损耗,本部分先对这两种损耗提出了准确计算的方法,在准确计算了转子损耗的前提下,搭建转子温度场等效模型,设置边界条件和材料特性,对高速永磁同步电动机的转子温度场进行仿真分析,得出了较为准确的结果。
[Abstract]:Permanent magnet synchronous motor (PMSM) has the advantages of high power density, simple composition, stable operation, low loss, high efficiency and good control performance. High speed permanent magnet synchronous motor (PMSM) has been widely used in aerospace and national defense. Various fields of industrial and agricultural production and daily life. Design of high speed permanent magnet motor. In particular, the rotor design is very difficult. In this paper, some key technologies in the rotor design of high speed permanent magnet synchronous motor (PMSM) are studied in depth. The first part mainly studies the rotor electromagnetism of high speed PMSM. The effect of parameters on the performance of motor. First of all. Two main types of rotor of high speed permanent magnet synchronous motor (PMSM) are analyzed. Then the research focuses on the two key parameters which affect the performance of permanent magnet motor, such as no-load flux leakage coefficient and no-load back EMF. This paper analyzes the different influence factors and variation law of the two kinds of rotor structure on these two parameters. The second part mainly studies the influence of rotor structure on mechanical performance of high speed permanent magnet synchronous motor. The influence of two kinds of rotor structure on rotor strength of high speed permanent magnet synchronous motor (PMSM). Two high speed permanent magnet synchronous motors (PMSM) of 630k WN8200r / min are designed in this paper. Then the rotor dynamics of high speed permanent magnet synchronous motor is analyzed and calculated by finite element method and analytical method, and then from the point of view of engineering application. The mechanical strength of the key parts of the rotor is analyzed and calculated. In the third part, the temperature field of high speed permanent magnet synchronous motor rotor is analyzed and studied. The rotor temperature field of permanent magnet motor must be considered in the design. The two main factors of rotor temperature are eddy current loss and friction loss. In this part, the two loss calculation methods are put forward. On the premise of accurately calculating the rotor loss, the equivalent model of rotor temperature field is built, and the boundary conditions and material characteristics are set up. The rotor temperature field of high speed permanent magnet synchronous motor (PMSM) is simulated and analyzed, and more accurate results are obtained.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM341

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