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考虑偏心及绕组耦合的无轴承永磁同步电机建模

, PP. 63-70

Keywords: 无轴承电机,永磁同步电机,径向悬浮力,电磁转矩,建模

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Abstract:

在阐述无轴承永磁同步电机转子悬浮机理的基础上,根据电机磁路原理,建立了无轴承永磁同步电机电感矩阵解析模型。基于该解析模型和电磁场虚位移原理,推导了无轴承永磁同步电机的较为精确的数学模型。该解析模型充分考虑了转子偏心以及两套绕组的耦合关系,能有效地描述电机产生的径向悬浮力和电磁转矩。为了验证该模型的正确性和可行性,在一台表面贴装式无轴承永磁同步电机上进行了的实验研究。实验结果表明利用该模型能够有效地提高无轴承永磁同步电机稳定悬浮运行的稳态精度和动态响应速度。

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