六相磁通切换型永磁电机的分析与设计

发布时间：2017-12-31 12:32

本文关键词：六相磁通切换型永磁电机的分析与设计　出处：《东南大学》2015年硕士论文　论文类型：学位论文

【摘要】：与传统的三相电机系统相比,多相电机系统具有转矩脉动小、可靠性高和更适合于大功率传动系统等优点,因而广泛地应用于大功率、高可靠性要求的航空、航天、舰船和电动汽车等场合。磁通切换型永磁电机(Flux-Switching Permanent Magnet电机,简称FSPM电机)是一种新型结构的定子永磁型无刷电机,不仅具有效率高、功率密度高等传统转子永磁型电机诸多优点,而且更兼具转子结构简单、适合高速运行、冷却方便等优点,克服了传统转子永磁型电机的诸多缺点,具有较好的应用前景。本文选择六相FSPM电机为研究对象,首先在分析该三相电机基本结构与工作原理基础之上,提出了两种不同六相FSPM电机的齿槽配合方式,并进行了性能比较；进而,研究了六相FSPM电机的通用设计方法和尺寸优化；然后,基于二维有限元法分析了六相FSPM电机的静态电磁特性；考虑到容错运行,提出了六相FSPM电机发生单相和两相开路故障时的容错控制策略；最后,设计了两台不同齿槽配合的六相FSPM电机,并已加工完成一台六相24/22极结构电机样机,并对该样机完成了基本静态特性的测试,验证了设计方案。本文所得结果为该电机的进一步深入研究和开发应用奠定了理论基础。论文的主要研究内容包括如下几个方面：1. 在三相FSPM电机基本结构的基础上,提出了两种不同齿槽配合的六相FSPM电机结构。其中六相24/20极FSPM电机绕组分布为六相对称绕组,而六相24/22极电机的绕组分布为双Y移30°绕组。然后,分析了六相FSPM电机的工作原理。2. 建立了六相FSPM电机的通用功率尺寸方程,并以此方程根据电机的性能指标直接得到了电机体积。在此基础上,以六相24/20极FSPM电机为算例,演示了电机初始设计方案的设计过程。为了便于比较六相24/20极和24/22极FSPM电机性能,两台电机的定子外径和铁心轴长保持相同。然后,研究了电机定转子主要尺寸变化对电机性能的影响,其中主要对转子齿宽和裂比这两个重要参数进行了优化。3. 基于ANSYS参数化设计语言,对六相24/20极和24/22极FSPM电机做了二维有限元分析,完成了静态特性的准确计算,主要包括气隙径向磁密、永磁磁链、空载反电动势、绕组自感和互感、定位力矩和电磁转矩等静态特性。最后,利用时步有限元法分析了六相FSPM电机的铁耗。4.研究了六相FSPM电机单相开路故障和两相开路故障的容错控制。为了使电机发生故障后的电磁转矩与正常运行时保持不变,提出了容错电流优化控制策略。5. 设计了两台不同齿槽配合的六相FSPM电机,并已加工完成一台六相24/22极样机。对样机的静态特性进行了初步测试,验证了设计方案的正确性。
[Abstract]:Compared with the traditional system of three-phase motor, multiphase motor system has small torque ripple, high reliability and more suitable for the advantages of high power transmission system, so it is widely used in high power and high reliability requirements of aviation, aerospace, ships and electric vehicles and other occasions. Flux switching permanent magnet motor (Flux-Switching motor Permanent Magnet referred to as FSPM), motor stator is a new permanent magnet brushless motor, not only has the advantages of high efficiency, high power density and traditional rotor permanent magnet type motor has many advantages, but also has the rotor has the advantages of simple structure, suitable for high speed operation, has the advantages of convenient cooling, overcomes the disadvantages of the traditional rotor permanent magnet motor. It has a good application prospect. This paper chooses six phase FSPM motor as the research object, first on the analysis of the three-phase motor basic structure and working principle of the foundation, proposed two different six phase FSP M motor of the slot, and a performance comparison; then, on the six phase FSPM motor design method and size optimization; then, two-dimensional finite element method based on the analysis of the static electromagnetic characteristics of six phase FSPM motor; considering the fault tolerant operation, proposed six phase FSPM motor and single-phase fault tolerant control strategy two phase open circuit fault; finally, designed two different slot with six phase FSPM motor, and finished a six phase 24/22 pole prototype structure of the prototype, and completed the basic static characteristics test, the design scheme is verified. The results of this paper lay a theoretical foundation for further research and development the application for the motor. The main contents of this thesis are as follows: 1. based on the basic structure of the three-phase FSPM motor, presents two different slots matching six phase FSPM motor The structure. In six phase 24/20 pole FSPM motor winding distribution of six symmetrical windings, and winding six phase 24/22 pole motor distribution for dual Y shift 30 DEG winding. Then, analyzes the working principle of.2. motor six phase FSPM to establish the general power dimension equation of six phase FSPM motor, and then according to the performance index equation the motor directly from the volume of the motor. On this basis, the six phase 24/20 pole FSPM motor as an example, the design process demonstrates the initial motor design. In order to compare the six phase 24/20 pole and 24/22 pole FSPM motor performance, the outer diameter of the two motor stator core and axial length remain the same. Then, study the main dimensions of motor stator and rotor of motor performance, which is mainly on the rotor tooth width and the split ratio of the two parameters of.3. were optimized based on ANSYS parametric design language, the six phase 24/20 pole and 24/22 pole FSPM motor. Two dimensional finite element analysis, the accurate calculation of the static characteristics, including radial air gap magnetic flux density, magnetic flux, no-load EMF, self inductance and mutual inductance, the static characteristics of cogging torque and electromagnetic torque. Finally, using time step finite element method analysis of fault-tolerant six phase FSPM motor single-phase open circuit fault the open circuit fault and two-phase control.4. consumption of six phase FSPM motor iron. In order to keep the motor constant torque and normal operation after the failure, put forward the optimization two different slot with six phase FSPM motor design and control strategy of fault tolerant.5. current, and has finished a six phase 24/22 pole prototype. The static characteristics of the prototype are tested, to verify the correctness of the design.

【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】：TM351

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