NDLI: General analytical solution of magnetic field in slotted surface-mounted permanent magnet machines

Content Provider	IEEE Xplore Digital Library
Author	Jinhua Chen Fengge Zhang
Copyright Year	2011
Description	Author affiliation: Education Ministry and Province key laboratory of Special Motor and High Voltage Apparatus, Shenyang University of Technology, 110870, China (Jinhua Chen; Fengge Zhang)
Abstract	This paper presents a general analytical method taking into account the slotting effect for the open-circuit magnetic field in surface-mounted permanent-magnet machines with any pole and slot combinations. A new analytical solution based on 2-D analysis in polar coordinates and suitable for radial/parallel magnetization, internal/external rotor topologies is developed. In order to accurately calculate the magnetic field and cogging torque, unlike previous introduced a relative permeance function and conformal transformation, the boundary conditions is used to consider the influence of interaction between slots. The radial and tangential flux density is obtained by using the Fourier's series and the method of separating variables. The cogging torque characteristic is deduced by calculating the Maxwell tensors. The analytical results are in very good agreement with those obtained by the FEM, confirmed the accuracy of the analytical method. The model is used to analyze the cogging torque developed in surface-mounted permanent-magnet machines when the design parameters vary in wide ranges. The model is useful in design and optimization of permanent magnet motors.
Starting Page	1
Ending Page	6
File Size	743969
Page Count	6
File Format	PDF
ISBN	9781457710445
e-ISBN	9781457710438
DOI	10.1109/ICEMS.2011.6073504
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic flux Stators Magnetic analysis Rotors Forging Analytical models Torque
Content Type	Text
Resource Type	Article

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