变频调速感应电动机转子槽形优化设计

The Optimal Design for the Rotor Slot of Induction Motor of Variable Frequency Speed Regulation

在变频调速的应用中，电源中的高次谐波电流将引起集肤效应，使电阻及铜损耗增大，这是造成电机效率降低的重要原因。在研究了集肤效应与转子槽形尺寸的关系之后，提出了降低集肤效应的理想槽形尺寸公式。这一方法已被用于１．５ｋＷ、４极的变频调速感应电动机的设计与生产，与同类产品相比较，其损耗下降，效率提高。

In the application of variable frequency speed regulation,the high frequency harmonics of the variable frequency source generate skin effect.So that,resistance and copper loss will increased.It is the important reason that makes the efficiency reduced.In this paper,the author studied the relationship of skin effect and rotor slot size,proposed the ideal formula of the slot size for the reduction in skin effect.The conclusion may be used for the designers.