电动汽车用双凸极轮毂电机性能的有限元分析

发布时间：2018-05-11 12:20

本文选题：电动汽车 + 双凸极轮毂电机　；参考：《华南理工大学》2014年硕士论文

【摘要】：本文深入分析与研究了双凸极轮毂电机（Doubly Salient Hub Motors，简称DSHM）的运行原理，建立了数学模型。根据电动汽车对驱动电机的性能要求，结合传统电机设计的理论知识，初步确定DSHM的结构和尺寸。给出尺寸确定的计算流程并编制相应的计算机程序，形成“尺寸确定”功能模块，并应用该程序初步确定12/8极DSHM的结构尺寸，得出初始方案。建立了DSHM二维有限元数学模型，设计适合于DSHM的有限元分析的计算流程。又采用轴向分段，二维磁场有限元计算的方法，设计出转子斜槽型DSHM的有限元计算流程。利用C++算法语言在VC++的MFC平台上，按照上述设计流程，编制了适用于DSHM的电机磁场有限元分析软件，并对该自主研发的软件的功能（尺寸确定、有限元前处理、有限元计算和有限元后处理）进行详细的说明。利用上述分析软件，对DSHM进行了磁场有限元计算，核算其运行性能。通过与设计要求对比，并对初始方案的某些数据进行了反复修改，，得出最终方案。然后又深入分析了直槽转子时电机的静态特性，包括空载静态特性如磁力线分布、绕组磁链特性和定位力矩特性等。为了降低转子直槽时的转矩脉动和定位力矩，为此，又计算和分析了转子斜槽型的DSHM在不同转子倾斜角度下的电磁参数，得出其静态特性。分析表明斜槽转子能有效地减小定位力矩，改善绕组电动势波形，降低转矩的脉动。
[Abstract]:In this paper, the operation principle of double salient hub motor Doubly Salient Hub Motors, (DSHM) is deeply analyzed and studied, and the mathematical model is established. According to the performance requirement of electric vehicle driving motor and the theoretical knowledge of traditional motor design, the structure and size of DSHM are preliminarily determined. The calculation flow of dimension determination is given and the corresponding computer program is compiled to form the function module of "size determination". The structural dimensions of 12 / 8 pole DSHM are preliminarily determined by the program, and the initial scheme is obtained. The DSHM two-dimensional finite element mathematical model is established and the flow chart of finite element analysis suitable for DSHM is designed. The finite element calculation flow of rotor slant groove DSHM is designed by using axial segment and two-dimensional magnetic field finite element method. Using C algorithm language on VC MFC platform, according to the above design flow, a finite element analysis software for motor magnetic field is developed for DSHM, and the function of the software (dimension determination, finite element preprocessing) is given. Finite element calculation and finite element post-processing are described in detail. Using the above analysis software, the magnetic field finite element calculation of DSHM is carried out, and its running performance is calculated. By comparing with the design requirements and modifying some data of the initial scheme repeatedly, the final scheme is obtained. Then the static characteristics of the rotor with straight grooves are analyzed, including the static characteristics of no-load, such as the distribution of magnetic field lines, the characteristics of winding flux chains and the characteristics of positioning torque, etc. In order to reduce the torque ripple and positioning torque of the rotor with straight grooves, the electromagnetic parameters of the skewed rotor DSHM are calculated and analyzed, and its static characteristics are obtained. The analysis shows that the skew slot rotor can effectively reduce the positioning torque, improve the winding EMF waveform, and reduce the torque ripple.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U469.72;TM32

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