【作者】 李平；

【导师】 李孟秋； 张建湘；

【作者基本信息】 湖南大学 ， 控制工程（专业学位）， 2015， 硕士

【摘要】 随着国民经济的快速发展,各行各业都对电机的性能提出了许多新的要求。永磁同步电机由于其体积小、效率高、功率密度高等优点成为研究的热点。但由于永磁电机转子结构的灵活多样性、磁路的复杂性、及永磁材料的失磁问题等使得永磁电机的设计比传统电机难,采用传统的等效磁路法计算的周期长、准确度低,而采用场路结合的设计方法可以快速、准确的设计并优化。本文详细介绍了永磁同步电机的应用现状及国内外的研究趋势。对永磁同步电机定、转子设计及其优化设计做了详细的阐述。分析对比了18槽8极跟24槽8极两种电磁方案,采用场路结合的设计方法利用Ansoft软件设计了一台绕组为18槽8极单双层长短距、转子结构经过简化的永磁调速同步电机,并利用Ansoft软件的参数化对铁心长度、永磁体厚度、气隙进行优化。通过对这台电机的空载、负载仿真分析验证电机设计的合理性及本设计在转矩脉动抑制方面的优点。针对目前采用等效磁路法设计永磁同步电机导致一些参数的计算精度较低的问题,本文详细的论述了利用有限元法计算电机的计算极弧系数、空载漏磁系数、交、直轴电抗等参数。更多还原

【Abstract】 With the rapid development of the national economy, it requirements many new performances of motor in all of our life.The permanent magnet synchronous motor becomes a research hotspot because of its small size、high efficiency、high-power density. But it’s difficult to design it then the traditional motor by traditional method due to its flexible rotor structure complex magnetic circuit and the problem of Permanent magnet excitation loss.It is waste much time and get a low accuracy result by traditional method but it is fast and accurate to design and optimize by the field-circuit united method.This paper introduces the present situation of the application of permanent magnet synchronous motor and the domestic and foreign research trends. It accurately expound to design and optimize the stator and rotor.Analyze and compare the 18 slots 8 poles with 24 slots 8 poles. Design a winding of 18 slots 8 poles and single-double layer and long-short distance and rotor structure is simplified using Ansoft software. Optimize the length of iron core permanent and magnet thickness and air gap by the parametric of Ansoft software. Through the analysis of no-load and rated load simulation to validate the result that it’s reasonable and this design is good at torque ripple suppression.Aiming at the design of permanent magnet synchronous motor in the calculation accuracy of some parameters of the equivalent magnetic circuit method, this paper discussed the calculation of the motor using the finite element method of pole arc coefficient, the leakage coefficient, exchange and direct axis reactance parameters.更多还原