Analytical On-Load Subdomain Field Model of Permanent-Magnet Vernier Machines

Yasemin Öner; Z. Q. Zhu; Lijian Wu; Xinyuan Ge; Hanlin Zhan; J. T. Chen

doi:10.1109/tie.2016.2532285

Abstract

Permanent-magnet vernier machine (PMVM) is a relatively new type of PM machines. An analytical subdomain model accounting for tooth-tips and flux modulation poles is developed to accurately predict on-load field distributions in PMVMs. Based on two-dimensional (2-D) polar coordinate and magnetic vector potential, this method solves the Maxwell's equations in slot, air-gap, flux modulation pole slot (FMPS), and PM regions. Consequently, the electromagnetic performance such as cogging torque, back-electromotive force (EMF), electromagnetic torque, power factor, and magnet loss are calculated. In addition, the model can also be used for the evaluation of demagnetization withstand capability. The finite-element analysis (FEA) and experimental results validate the accuracy of the developed analytical model.

Keywords

Cogging torque Vernier scale Magnet Counter-electromotive force Torque Finite element method Demagnetizing field Electromotive force Electromagnetic field Maxwell's equations Magnetic flux Control theory (sociology) Mechanical engineering Mechanics Magnetic field Physics Engineering Electrical engineering Voltage Computer science Structural engineering Classical mechanics Optics Magnetization

Subject Areas

Electric Motor Design and Analysis ·Electrical and Electronic Engineering ·Physical Sciences

Magnetic Bearings and Levitation Dynamics ·Control and Systems Engineering ·Physical Sciences

Magnetic Properties and Applications ·Electronic, Optical and Magnetic Materials ·Physical Sciences

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Analytical On-Load Subdomain Field Model of Permanent-Magnet Vernier Machines

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