As the core component of the energy storage flywheel,the rotor of permanent magnet motor needs to have high magnetic properties and meet the requirements of material structure strength.To solve this prob-lem,a comprehensive scoring method was used to measure the electromagnetic and mechanical characteris-tics of the motor rotor.Through the optimization scheme of 16 combinations of five factors and four levels,adjusting the structure parameters of the rotor core of the motor,the main and secondary sequence of factors and the optimal combination were obtained.The test results show that the maximum stress of the rotor is re-duced from 407.8 MPa to 325.9 MPa,and the safety factor is 1.227 times,which meets the design require-ments of the rotor strength.In this paper,an optimization method of the rotor structure of permanent magnet motor based on strength and gap density was proposed.The comprehensive index of the fundamental ampli-tude and maximum stress of the rotor air gap density was optimized by comprehensive scoring method.This method can solve the structural strength problem of high speed motor rotor with high power storage flywheel,and provides a theoretical solution.
关键词
电机转子/结构优化/优化试验/气隙磁密/最大应力
Key words
motor rotor/structural optimization/optimization experiment/air gap magnetic density/maxi-mum stress
维普
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