Permanent magnet synchronous motor(PMSM)for EV/HEV pursues higher efficiency,higher power density,higher rotation speed and better NVH performance.To meet these requirements,an improved triangle rotor topology is pres...Permanent magnet synchronous motor(PMSM)for EV/HEV pursues higher efficiency,higher power density,higher rotation speed and better NVH performance.To meet these requirements,an improved triangle rotor topology is presented.The new rotor topology is researched through comparing the performance with V shape rotor and traditional triangle shape rotor.The comparing results on air-gap flux density,key order radial forces,sound pressure,inductance,torque,anti-demagnetization capability and efficiency proved the advantage of the new rotor topology.展开更多
In this paper,the electromagnetic performance of variable flux memory(VFM)machines with series-magnetic-circuit is investigated and compared for different rotor topologies.Based on a V-type VFM machine,five topologies...In this paper,the electromagnetic performance of variable flux memory(VFM)machines with series-magnetic-circuit is investigated and compared for different rotor topologies.Based on a V-type VFM machine,five topologies with different interior permanent magnet(IPM)arrangements are evolved and optimized under same constrains.Based on two-dimensional(2-D)finite element(FE)method,their electromagnetic performance at magnetization and demagnetization states is evaluated.It reveals that the iron bridge and rotor lamination region between constant PM(CPM)and variable PM(VPM)play an important role in torque density and flux regulation(FR)capabilities.Besides,the global efficiency can be improved in VFM machines by adjusting magnetization state(MS)under different operating conditions.展开更多
基金This work was supported by the National Support Plan Project(2015BAG04B01)the annual plan project of industry university research cooperation of Shanghai(HU CXY-2015-014).
文摘Permanent magnet synchronous motor(PMSM)for EV/HEV pursues higher efficiency,higher power density,higher rotation speed and better NVH performance.To meet these requirements,an improved triangle rotor topology is presented.The new rotor topology is researched through comparing the performance with V shape rotor and traditional triangle shape rotor.The comparing results on air-gap flux density,key order radial forces,sound pressure,inductance,torque,anti-demagnetization capability and efficiency proved the advantage of the new rotor topology.
基金supported by the CRRC Zhuzhou Institute Company Ltd.and in part by Key R&D projects in Hunan+1 种基金ChinaNo.2022GK2062。
文摘In this paper,the electromagnetic performance of variable flux memory(VFM)machines with series-magnetic-circuit is investigated and compared for different rotor topologies.Based on a V-type VFM machine,five topologies with different interior permanent magnet(IPM)arrangements are evolved and optimized under same constrains.Based on two-dimensional(2-D)finite element(FE)method,their electromagnetic performance at magnetization and demagnetization states is evaluated.It reveals that the iron bridge and rotor lamination region between constant PM(CPM)and variable PM(VPM)play an important role in torque density and flux regulation(FR)capabilities.Besides,the global efficiency can be improved in VFM machines by adjusting magnetization state(MS)under different operating conditions.
