An effect of electromagnetic force on acoustic noise of axial-gap in-wheel SR motor
An effect of electromagnetic force on acoustic noise of axial-gap in-wheel SR motor
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DOI：
10.1109/icelmach.2014.6960301
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发表时间：
2014-11
期刊：
影响因子：
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通讯作者：
T. Tokita;H. Goto;O. Ichinokura
中科院分区：
文献类型：
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作者：
T. Tokita;H. Goto;O. Ichinokura
开关磁阻（SR）电机是利用由电磁钢片和无永磁体的绕组组成的定子和转子之间的凸极磁阻产生的磁阻扭矩的电机。由于其坚固性和结构简单，SR 电机适合轮毂电机。在扁平空间中，轴向间隙结构与传统的径向间隙结构相比，在电机的空间系数方面具有优势。轴向间隙轮内SR电机针对微型客车进行了测试，并且可以驱动客车。我们在电机特性方面取得了成功的结果。然而，电机会直接向环境发出很大的噪音。我们提出续流模式作为减少振动的控制方法。自由轮模式与传统方法相比具有系统简单、成本低、不降低扭矩、通用性高等优点。并且这种方法改善了噪音。本文讨论了轴向间隙SR电机的振动机理以及如何通过续流模式降低噪声。
Switched Reluctance (SR) motors are the motor that utilize the reluctance torque originated in magnetic saliency between stator and rotor composed of electromagnetic steel sheet and windings without permanent magnet. Because of its robustness and simple structure, SR motors are suited to in-wheel motor. In flat space, an axial-gap structure has advantage compared with conventional radial-gap structure in space factor of motor. An axial-gap in-wheel SR motor was tested for microbus and the bus could be driven. We had successful results on the motor characteristics. However, the motor emits loud acoustic noise directly to the environment. We proposed freewheeling mode as a control method to reduce vibration. Freewheeling mode has some advantages compared with conventional methods, for example, simple system, low cost, no torque reduction and high versatility. And this method improves acoustic noise. This paper discusses characterizing vibration mechanism of axial-gap SR motor and how to reduce acoustic noise with freewheeling mode.