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PMSMs with concentrated windings gain more and more interests due to the very short end winding and advantages in the production process, for which they are desirable for wind power generations, electric vehicles and torque propulsion and so on [1]. However, concentrated windings produce a rich spectrum of flux density harmonics, which rotate asynchronously with respect to the rotor, inducing eddy...
Permanent magnet synchronous machines (PMSM) have high torque density, efficiency, power factor and so on compared with other type of machines. PMSMs can be separated into traditional well-known distributed wounded (DW) machines and fractional slot concentrated winding (FSCW) machines [1]. FSCW machines own low cogging torque, compact structure, high power density, and convenient fabrication, etc...
FSCW SPM machines (SPP <1/2, such as 10-pole/12-slot), own outstanding constant power ability [1], although it was regard widely that only IPM machines can be flux-weakened deeply. SPM machines are considered as a favorite candidate for electric propulsion and vehicle application, in order to take their other advantages, such as convenient fabrication, and good controllability [2]. The constant...
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