Improved Magnetic Field Analysis Method and Storage Medium of Permanent Magnet Motor Considering Segmented Slant Pole
A magnetic field analysis and permanent magnet motor technology, applied in the field of permanent magnet motor magnetic field analysis, non-transient computer-readable storage media, can solve problems such as axially segmented oblique poles of permanent magnets
Active Publication Date: 2022-05-13
STATE GRID HUNAN ELECTRIC POWER +2
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[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an improved method and system for analyzing the magnetic field of permanent magnet motors considering segmented oblique poles, which solves the problem that the axial segmented oblique poles of permanent magnets cannot be handled well on a two-dimensional plane. technical issues affecting
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[0089] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0090] The embodiment of the present invention proposes an improved method for analyzing the magnetic field of a permanent magnet motor considering segmental skew poles. figure 1 A schematic flow chart of an improved permanent magnet motor magnetic field analysis method considering segmented skew poles provided by the present invention, such as figure 1 As shown, the process is as follows: Firstly, the sub-domain analytical model of the surface-mounted permanent magnet synchronous motor is established on the two-dimensional parallel plane of the motor, that is, the two-dimensional polar coordinate system, and the magnetic field solution area of the sub-domain analytical model is divided into slot sub-domain, air gap sub-domain and permanent magnet sub-domain,...
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The present invention relates to an improved permanent magnet motor magnetic field analysis method and a computer-readable storage medium considering segmented oblique poles. The method includes: firstly, establishing a sub-domain analysis model of a surface-mounted permanent magnet synchronous motor, and dividing the solution area into The slot sub-domain, the air gap sub-domain and the permanent magnet sub-domain, and determine the magnetic field boundary conditions between each sub-domain; secondly, according to the obtained general solutions of each sub-domain, modify the general solution of the permanent magnet sub-domain to obtain the permanent magnet sub-domain Then, the harmonic coefficients of each order of the general solution of each sub-domain are solved, so as to obtain the improved sub-domain analytical model; finally, the permanent magnet motor magnetic field is analyzed based on the improved sub-domain analytical model. The present invention improves the general solution of the permanent magnet sub-field on the two-dimensional parallel plane of the motor, and the permanent magnet motor with axially segmented oblique poles is equivalent to a permanent magnet motor with a special magnetization method, thus considering the permanent magnet The electromagnetic performance of the whole motor is solved by the sub-domain analysis method under the influence of the segmented oblique poles of the magnet.
Description
technical field [0001] The invention relates to the technical field of motor electromagnetic field analysis, in particular to an improved permanent magnet motor magnetic field analysis method considering segmented oblique poles and a non-transient computer-readable storage medium. Background technique [0002] Due to the cogging effect and the nonlinearity of the magnetic circuit, the electromagnetic torque of the permanent magnet synchronous motor contains periodic pulsating components, which have a bad influence on the control progress of the motor. In engineering applications, permanent magnets with segmented oblique poles along the axial direction have attracted extensive attention in the field of optimal design of permanent magnet synchronous motors because they can weaken harmonics and facilitate manufacturing. Segmented skew poles of permanent magnets are an effective method to improve torque ripple, but it is necessary to optimize the skew angle, the number of axial ...
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IPC IPC(8): G06F30/23
CPCG06F30/23
Inventor 郭思源柳永妍陈道君沈阳武呙虎王玎孙杰懿
Owner STATE GRID HUNAN ELECTRIC POWER