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412 results on '"Fang, Shuhua"'

105. Design and Analysis of a New Partitioned Stator Hybrid-Excited Flux Reversal Machine With Dual-PM.

Author

Meng, Yao, Fang, Shuhua, Pan, Zhenbao, Liu, Wei, and Qin, Ling

Subjects
*STATORS, *FINITE element method, *MACHINERY, *PERMANENT magnets, *MAGNETIC fields
Abstract

This article proposes a new partitioned stator hybrid-excited flux reversal machine with dual-PM (PS-HEFRDPMM), in which field windings are placed in the inner stator and permanent magnets (PMs) are employed on both the rotor and outer stator. By utilizing dual-PM excitation, the proposed PS-HEFRDPMM is able to introduce the bidirectional flux modulation effect to transmit high torque production. In addition, a good flux weakening capability can be obtained by using dc current to regulate air-gap magnetic field, which is beneficial to expand the speed range of machine. The machine topology, operating principle, and design considerations of PS-HEFRDPMM are described, respectively. The electromagnetic characteristics of PS-HEFRDPMM under different excitation states are comprehensively analyzed using finite element method. The results show that the proposed PS-HEFRDPMM can provide the merits of high toque capability with low torque ripple, good over-load torque capability, high power factor and efficiency, as well as good flux weakening capability. [ABSTRACT FROM AUTHOR]

Published
2022
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120. 3-D Analytical Magnetic Field Analysis of Axial Flux Permanent-Magnet Machine

Author

Lin Heyun, Jin Minyi, Hui Yang, Yue Yuan, Siu Lau Ho, Ping Jin, and Fang Shuhua

Subjects
Physics, Electromagnet, Magnetic energy, Magnetic reluctance, Mechanics, Magnetostatics, Magnetic flux, Electronic, Optical and Magnetic Materials, law.invention, Magnetic circuit, Classical mechanics, law, Magnetic pressure, Electrical and Electronic Engineering, Magnetic dipole
Abstract

This paper presents a 3-D analytical magnetic field analysis of an air-cored axial flux permanent-magnet machine The 3-D analytical magnetic distribution is established using the magnetic scalar potential and modified BESSEL functions in the cylindrical coordinate system. The analytical magnetic field distributions and electromagnetic force are derived and verified by the computational results using finite element method.

Published
2014
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