Performance Optimization Design and Research of Built-in V-type Permanent Magnet Synchronous Motor
In order to optimize the torque performance of the motor,this paper starts from increasing the out-put torque of the motor,reducing the torque pulsation,and weakening the cogging torque,and carries out the secondary design of the rotor of the conventional motor to obtain a new rotor structure permanent magnet synchro-nous motor-NRS-PMSM,which is used to optimize the motor performance by designing a magnetic barrier on the rotor.The performance of the motor is optimized by designing a magnetic barrier on the rotor.In the optimi-zation,the multi-parameter sensitivity analysis method is used to screen the structural parameters that have a lar-ger impact on the torque performance of the motor,and then the Evolutionary Algorithms are used to select the trade-offs between the optimization objectives to obtain the optimal solution set of the optimization objective pa-rameters.The torque performance of the optimized motor and the conventional motor is compared by finite ele-ment method analysis,and the experimental results show that the optimized output torque is increased from 83.7Nm to 85.4Nm,the torque pulsation is reduced from 14.9%to 6.5%,and the cogging torque is reduced from 0.93mNm to 0.72mNm.According to the results,the feasibility of the motor as well as the validity of the opti-mization method can be verified.
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