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高压脉冲方波下聚酰亚胺薄膜电老化寿命模型

, PP. 25-30

Keywords: 变频电机,老化,绝缘,模型

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Abstract:

逆变器输出的高压脉冲方波会导致变频调速牵引电机绝缘过早损坏,其老化机理与工频交流电压下不同。利用一种高压脉冲绝缘老化试验系统模拟变频器对变频调速牵引电机定子绕组绝缘的老化作用,以聚酰亚胺薄膜为试验对象,研究了脉冲方波幅值、频率对绝缘寿命的影响,提出了高压脉冲方波下绝缘材料的电老化寿命模型。

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