Torque ripple suppression in surface mounted PMSMs with distributed windings

Stoev, Bozhidar; Todorov, Georgi

doi:10.1109/elma.2017.7955448

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…One of them is to reasonably design various inherent structural parameters of the machine, such as stator slot and rotor pole combination and pole arc coefficient. Another one is to adopt various kinds of auxiliary measures, such as skewing the stator slot [1,2], skewing the rotor pole [3,4], improving the PM shape [5,6], changing the magnetization pattern of the magnet [7], and changing the geometry parameters of the stator teeth or slot [8,9]. All the above auxiliary measures can effectively make the torque ripple decrease, but these measures will largely increase manufacturing difficulty.…”

Section: Introductionmentioning

confidence: 99%

Research on Stator Slot and Rotor Pole Combination and Pole Arc Coefficient in a Surface-Mounted Permanent Magnet Machine by the Finite Element Method

Guo

Wang

2021

WEVJ

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A surface-mounted permanent magnet (SPM) machine is widely used in many auxiliary parts of an electric vehicle, so its design level directly influences the performance of the electric vehicle. In the design process of the SPM machine, selecting the appropriate stator slot and rotor pole combination and pole arc coefficient is a necessary and important step. Therefore, in this paper, a 750 W machine is set as an example to research stator slot and rotor pole combinations and pole arc coefficients for the SPM machine. First, the design schemes of machines adopting different stator slot and rotor pole combinations are determined according to the winding coefficient, stator size, and electromagnetic performance requirements. Further, finite element models of SPM machines with different stator slot and rotor pole combinations are established by Ansys Maxwell. On this basis, the back electromotive force (back EMF), cogging torque, electromagnetic torque, and loss and efficiency of SPM machines are calculated and compared to select the better stator slot and rotor pole combinations. Further, effects of pole arc coefficient on cogging torque and electromagnetic torque are also researched to guide the selection of the pole arc coefficient in the design process of the SPM machine. Conclusions achieved in this paper will provide guidance for design of the SPM machine.

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