A Magnetic Circuit Analysis Method for Bearingless Flux Switching Motor Considering Rotor Eccentricity

A magnetic flux switching motor, rotor eccentricity technology, applied in electrical digital data processing, instruments, geometric CAD and other directions, can solve the problem of magnetic circuit analysis, achieve the effect of wide application and reduce hardware cost

Active Publication Date: 2019-07-09
FUZHOU UNIV
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Problems solved by technology

The magnetic circuit analysis of the dynamic eccentric rotation state of the rotor cannot be realized by the finite element analysis method

Method used

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  • A Magnetic Circuit Analysis Method for Bearingless Flux Switching Motor Considering Rotor Eccentricity
  • A Magnetic Circuit Analysis Method for Bearingless Flux Switching Motor Considering Rotor Eccentricity
  • A Magnetic Circuit Analysis Method for Bearingless Flux Switching Motor Considering Rotor Eccentricity

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Embodiment Construction

[0081] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0082] If the stator power winding and suspension winding are not considered, the cross-section of the bearingless flux switching motor is as follows: figure 1 shown. The stator is composed of 12 U-shaped magnetic cores and 12 pieces of permanent magnets. The permanent magnets are embedded between two adjacent U-shaped magnetic cores. The permanent magnets are alternately magnetized along the tangential direction of the circumference. The excitation directions are 12 as shown in the figure. Indicated by the black arrow. The rotor is a salient pole iron core structure with neither permanent magnets nor windings on it. exist figure 1 Power windings and suspension windings with different structures embedded in the stator core can form bearingless flux switching motors with different performances. However, after deducting the windings, th...

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Abstract

The invention relates to a bearing-free flux-switching motor magnetic circuit analysis method considering rotor eccentricity. A magnetic circuit is segmented during rotor dynamic eccentricity, a motor magnetic circuit network with rotor dynamic eccentricity is built, and the magnetic circuit network is calculated to obtain torque characteristics and suspension force characteristics of a bearing-free flux-switching motor. By means of motor magnetic circuit segmentation considering rotor eccentricity and magnetic network calculation, the torque characteristics and the suspension force characteristics of the motor are quickly obtained, and a quick means is provided for design of the bearing-free flux-switching motor and verification of control strategies.

Description

technical field [0001] The invention relates to a magnetic circuit analysis method of a bearingless magnetic flux switching motor considering rotor eccentricity. Background technique [0002] A bearingless flux switching motor can be formed by embedding the suspension winding that controls the suspension of the rotor into the stator core of the stator permanent magnet flux switching motor, and the tangential rotation of the rotor can be realized by passing appropriate currents in the power winding and the suspension winding respectively At the same time, the radial magnetic levitation of the rotor is realized. Because the permanent magnet of this kind of motor has easy heat dissipation, no pollution in operation and high efficiency, it is more and more favored and researched by people. When the motor structure is determined, it is necessary to analyze the motor magnetic circuit to obtain the motor power characteristics and suspension characteristics of the motor under a cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 周扬忠方飞吴汉童钟天云
Owner FUZHOU UNIV
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