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基于改进磁场分割法的开关磁阻电机径向力波抑制能力解析计算

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Keywords: 开关磁阻电机,磁场分割,气隙磁导,转子开槽,振动抑制

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Abstract:

电磁振动的抑制是开关磁阻电机研究的热点问题之一。因此提出了一种基于抛物线弧改进的磁场分割法,用于复杂定子、转子形状的开关磁阻电机气隙磁导计算。基于改进磁场分割法,提出了一种开关磁阻电机径向力波抑制百分比的解析计算方法,通过转子形状改变带来的气隙磁导的变化,以比值方式计算了径向力波的抑制程度,可以为基于改变定子、转子形状的振动抑制设计提供依据。以转子两侧开槽的开关磁阻电机为例,分别使用基于抛物线弧和椭圆弧的磁场分割法计算了绕组电感和径向力波抑制百分比,并与有限元分析和样机试验结果进行对比验证,结果表明改进的磁场分割法和径向力波抑制百分比计算方法是正确、有效的。

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