In recent years, as the price of rare-earth permanent magnet fluctuates dramatically, the less-rare-earth interior permanent-magnet synchronous machines (LRE- IPMSMs) used for electric vehicles (EVs) have received more and more attentions. LRE-IPMSMs combine the features of high power density in permanent-magnet synchronous machine (PMSM) and low cost in synchronous reluctance machine (SynRM), which are promising candidates for traction motors in EVs. This paper investigates the electromagnetic performances of a 70kW LRE-IPMSM with the rotor structure of two-layer flux barrier. As a narrow bridge width can provide more torque but impairs the machine mechanical strength, the stress distribution of LRE-IPMSMs is investigated. The effects of widening the bridge and radial rib on reducing maximum stress are analyzed and compared.


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    Title :

    Electromagnetic and mechanical analyses of less-rare-earth interior permanent-magnet synchronous machine used for electric vehicles


    Contributors:
    Wang, Weinan (author) / Wang, Mingqiao (author) / Zhang, Shukuan (author) / Zheng, Ping (author) / Fu, Zhenxing (author) / Fang, Yi (author)


    Publication date :

    2017-08-01


    Size :

    615813 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English