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Generally, cogging torque derives from motor using permanent magnet such as interior permanent magnet synchronous motor (IPMSM) and surface permanent magnet synchronous motor (SPMSM). The cogging torque works for smoothness in rotation of the rotor, but it is a kind of root cause mechanical vibration and acoustic noise. Consequently, cogging torque must be reduced by all manner of means. There are...
This paper presents the optimal barrier design in single-phase LSPM (line-start permanent magnet motor) considering the efficiency. The line-start permanent-magnet motor is a synchronous hybrid PM/reluctance motor that is being developed for applications including compressors of air conditioner that require a high-efficiency alternative to the induction motor. To consider nonlinear characteristics,...
In order to reduce the torque ripple of the synchronous reluctance motor (SynRM), the skew of the rotor is used to be chosen. The 2D finite element method (FEM) or 3D FEM is used to analyze the skewing motor. However, the 2D or 3D FEM analyses generally take much time. This paper analyzes the characteristic of skewed SynRM using equivalent magnetic circuit considering flux density harmonics contents
In this paper, we analyzed the distribution of electromagnetic force acting on the end winding by Biot Savart's law and 3D finite element method (FEM). We studied these methods analytically and compared the force distribution of two methods
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