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BSRM modeling method considering edge diffusion effect

A technology of edge diffusion and modeling method, applied in simulators, instruments, control/regulation systems, etc., can solve the problems of difficulty in accurate modeling of BSRM, and achieve the effect of high modeling accuracy

Active Publication Date: 2016-03-02
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Compared with ordinary SRM, BSRM not only has nonlinearity caused by magnetic circuit saturation, but also has nonlinear coupling relationship between electromagnetic torque and radial levitation force, and between radial levitation force in α and β directions. Difficulty in accurate modeling of BSRM

Method used

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  • BSRM modeling method considering edge diffusion effect
  • BSRM modeling method considering edge diffusion effect
  • BSRM modeling method considering edge diffusion effect

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] Such as figure 1 As shown, the research object of the embodiment of the present invention is a three-phase 12 / 8 structure BSRM, and only the main winding (N ma ), α-direction suspension winding (N sa1 ) and β-direction suspension winding (N sa2 ). N ma It is composed of 4 pole windings separated by 90° in series, and N sa1 , N sa2 They are respectively formed by anti-serialization of two suspension windings radially opposite in the α and β directions. ...

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Abstract

The invention relates to a BSRM modeling method considering the edge diffusion effect. The method includes the following steps that: Maxwell stress method integral paths considering the edge diffusion effect are selected respectively according to a stator movement region and a rotor movement region of a BSRM air gap when an angle theta by which rotor tooth poles deviate from stator tooth poles is equal to 0 degree and when the theta is not equal to 0 degree; based on the Maxwell stress method integral paths, air gap flux densities when theta is equal to 0 degree and when the theta is not equal to 0 degree are calculated; alpha-direction levitation forces and beta-direction levitation forces which are borne by the rotor tooth poles, and electromagnetic torques can be obtained through calculation according to the air gap flux densities; and an alpha-direction and beta-direction levitation force and electromagnetic torque analytical model of a BSRM is established. With the BSRM modeling method adopted, BSRM analytical modeling is realized, and the edge diffusion effect is considered, and therefore, modeling accuracy is high.

Description

technical field [0001] The invention relates to the field of bearingless switched reluctance motor and its control, in particular to a BSRM modeling method considering edge diffusion effect. Background technique [0002] Bearingless switched reluctance motor (BSRM) is a combination of rapidly developing magnetic levitation technology and switched reluctance motor (SRM). The advantages of high speed, low frictional power consumption, no need for lubrication and long life, etc., have outstanding advantages in high-speed and ultra-high-speed operation occasions, and are one of the hotspots in the field of high-speed motor research. [0003] The magnetic circuit distribution of the electromagnetic field in the actual motor is extremely complex, the magnetic flux is not completely confined in the air-gap magnetic circuit, the distribution of the magnetic flux and the distribution of the magnetic force lines in the air gap are not completely uniform, and there is a tendency to spr...

Claims

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Application Information

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IPC IPC(8): G05B17/02
CPCG05B17/02
Inventor 陈凌王宏华谭超
Owner HOHAI UNIV
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