Abstract
The ultra-high-speed permanent magnet motor has the characteristics of high-power density, small size, and high speed, but there are problems with it, such as generation of local excessive heat and obvious vibration and noise. In order to reduce the loss and improve the efficiency of the motor, in this study, ultra-thin silicon steel sheets are used as the material of the iron core of the motor, and two non-oriented silicon steel sheets with different thicknesses—0.05 and 0.15 mm—were selected. First, we use the Epstein square ring electrical steel sheet magnetic properties test to determine the magnetic properties and the loss properties of the two ultra-thin non-oriented silicon steel sheets under working conditions. Then, we use electromagnetic simulation software to calculate the magnetic performance and the temperature rise performance of two kinds of motors with different materials. Finally, through the test of the prototype, we know the difference in the influence of the two kinds of silicon steel sheets on the performance of air compressors. We hope the outcome of the study will provide technical support for optimizing the design of ultra-high-speed permanent magnet motors for air compressors.
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