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用于飞轮储能的单绕组磁悬浮飞轮电机径向力补偿方法

, PP. 177-183

Keywords: 飞轮储能,单绕组,磁悬浮飞轮电机,麦克斯韦应力法,径向力补偿

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Abstract:

将开关磁阻电机定、转子位置互换,定子极上仅有一套可同时产生悬浮力和转矩的绕组,每套绕组独立控制,转子直驱飞轮,省去机械传动装置,得到更适用于飞轮储能的单绕组磁悬浮飞轮电机。精确的数学模型是稳定控制电机的基础,针对麦克斯韦应力法对积分路线的选取较为敏感的问题,运用有限元分析其电磁特性,引入径向力修正系数,推导出单绕组磁悬浮飞轮电机径向力较精确的数学模型。为保证单绕组磁悬浮飞轮电机能在绕组发生故障时正常悬浮,考虑径向力系数随角度的变化的趋势以及不同齿极下径向力系数的差异,提出无β方向约束径向力补偿和有β方向约束径向力补偿方法。结果表明所提出的补偿方法具有可行性和较高的精确性。

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