汽车用永磁无刷直流电机的电磁及热分析

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中图分类号： 文献标识码： 文章编号：1003-8639（2025）05-0083-03

【Abstract】 In view of the wide application of brushless DC motors in automobiles，this paper uses finite element software Ansofttocarryout electromagnetic designand simulationanalysisof the motors.The simulationresultsare basicallyconsistent with theexperimentaldata，whichcan efectivelyverifythescientificityof thedesignand analysis methods.Because thevehicle motor is limited by volume，its temperature rise indexseriously affects the basic parameters of the motor.On the basis of calculating the motorloss，the paper applies the software Fluentto simulate the three-dmensional temperature rise distributionofthe motoranddetermine the highest pointof temperaturerise，which has important engineering practicability for the design of electromagnetic and cooling systems of similar motors.

【Key words】 permanent magnet brushless DC motor；finite element；electromagnetic analysis；temperature rise

0 引言

随着稀土永磁材料、电力电子技术的迅速发展，以及车用电控单元的技术进步，无刷直流电机在汽车电器设备中的应用受到越来越多的重视。（剩余2540字）