开关磁阻电机定子系统磁固耦合径向振动建模与分析

发布时间：2018-04-27 09:08

本文选题：开关磁阻电机 + 径向力　；参考：《河北工程大学》2015年硕士论文

【摘要】：开关磁阻电机(Switched Reluctance Motor简称:SR电机)因其结构简单、可调性强、性能可靠,应用广泛,具有较高的的研究价值。而SR电机的凸极结构和所加电流的脉冲性致使其有较高的振动和噪音,这限制的SR电机的推广应用。因此很多年以来,国内外的科学家都针对SR电机的振动和噪音做出了不断的研究。针对以往开关磁阻电机定子系统振动的研究中均未考虑磁固耦合这一局限性,本文主要做了以下几方面工作一利用梁函数组合法求得SR电机定子系统的固有频率和振型函数。二计算了SR电机稳定运行时的定转凸极所受到的径向电磁力。该电磁力的建立是在考虑了电机定子系统径向振动位移对定转子间气隙长度的影响下求得的。三建立SR电机定子系统磁固耦合径向振动的振动微分方程,结合电磁力和定子系统的振型函数求得振动方程的解。本文所建模型不仅符合实际开关磁阻电机结构及运行特点,而且较为准确的描述磁固耦合情况下结构参数和控制参数对径向电磁力和径向振动位移的影响。基于上述SR电机的模型,可以更好的对SR电机的振动和噪音的降低和控制进行研究改进。以一台8/6样机为例,本文将所求结果与二维有限元分析结果进行了对比,验证了所建模型的有效性。
[Abstract]:Switched Reluctance Motor (SRM) has high research value because of its simple structure, strong tunability, reliable performance and wide application. However, the salient structure of SR motor and the pulse of applied current make it have higher vibration and noise, which limits the popularization and application of SR motor. Therefore, for many years, scientists at home and abroad have made continuous research on the vibration and noise of SR motors. In view of the limitation of the previous researches on the vibration of the fixed subsystem of SRM, the following work has been done in this paper: (1) the natural frequency and mode function of the stator system of SRM are obtained by using the beam function combination method. Second, the radial electromagnetic force of the constant rotation salient is calculated when the SR motor is running stably. The establishment of the electromagnetic force is based on the consideration of the influence of the radial vibration displacement of the stator subsystem on the air gap length between the stator and rotor. The vibration differential equation of the magneto-solid coupling radial vibration of SR motor is established, and the solution of the vibration equation is obtained by combining the electromagnetic force with the vibration function of the stator system. The model not only accords with the structure and operation characteristics of the switched reluctance motor, but also accurately describes the influence of the structure parameters and control parameters on the radial electromagnetic force and the radial vibration displacement in the case of magneto-solid coupling. Based on the model of SR motor, the vibration and noise reduction and control of SR motor can be better studied and improved. Taking an 8 / 6 prototype as an example, the results obtained in this paper are compared with the results of two-dimensional finite element analysis, and the validity of the proposed model is verified.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM352

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