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This paper presents a computation method for analyzing the impact torque characteristics of a new noncontact electromagnetic impact mechanism employing our 3-D FEM code. In this method, magnetic field analysis is coupled with electric circuit analysis and motion analysis. The operating principle of this mechanism is described, and torque performances are shown. The validity of the analysis is verified...
This paper presents a novel configuration of the permanent magnet system for rotating magnetic refrigerator, which consists of stator and rotor. The stator of this system includes two permanent magnets and iron yoke. The rotor includes shaft, iron core and magnetic refrigerant material. When the magnetic refrigerant material is located under the pole of the permanent magnet, it is magnetized by a...
In this paper, we propose an analytical method of polar anisotropic ferrite bonded magnet to outer rotor type brushless dc motor considering magnetizing process. The characteristics of polar anisotropic magnets are different from cored type ones which have uniform magnetization direction. Consequently, the magnetization directions of ferrite bonded magnet are analyzed by finite element analysis for...
A novel wheel multi-disc coreless permanent magnet synchronous motor(PMSM) is presented in this paper. The machine consists of three external rotor discs and two inner stator discs. Three-dimensional finite element analysis for air gap flux density is adopted to discuss the impact of axial and Halbach array permanent magnet on lateral rotor discs. In order to develop the impact of different pole angles...
Transverse flux permanent magnet machine (TFPMM) offers a higher power density than the conventional radial and axial ones. Based on the principle of TFPMM, a novel flux switching transverse flux PM generator (FS-TFPMG) with a unique structure is presented for low speed wind power applications in this paper. The stator space utilization can be improved by arranging more stator cores and the flux density...
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