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BSRM (Bearingless Switched Reluctance Motor) analytical modeling method based on Maxwell stress method

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

Active Publication Date: 2016-05-04
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 (Bearingless Switched Reluctance Motor) analytical modeling method based on Maxwell stress method
  • BSRM (Bearingless Switched Reluctance Motor) analytical modeling method based on Maxwell stress method
  • BSRM (Bearingless Switched Reluctance Motor) analytical modeling method based on Maxwell stress method

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Embodiment Construction

[0018] 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] like 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 discloses a BSRM (Bearingless Switched Reluctance Motor) analytical modeling method based on a Maxwell stress method. The method comprises steps: according to a stator and rotor action zone in a BSRM air gap, a Maxwell stress method integral path is selected; according to the Maxwell stress method integral path, air gap flux density is calculated; according to the air gap flux density, levitation forces and electromagnetic torques applied to a rotor tooth pole in an alpha direction and in a beta direction can be calculated and obtained; and alpha and beta-direction levitation force and electromagnetic torque analytical models for the BSRM are built. The BSRM analytical modeling is realized, and the modeling precision is high.

Description

technical field [0001] The invention relates to the technical field of modeling, in particular to a BSRM analytical modeling method based on the Maxwell stress method. 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 BSRM stacks the main winding and the suspension winding on the stator poles, and uses the interaction between the main winding current and the suspension winding current to form a radial force to achieve rotor suspension. Compared with ordinary SRM, BSRM not only has nonlinearity caused by magnetic circuit saturation, but also has nonlinear coupling relations...

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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