Dual-winding bearingless switched reluctance motor and control method thereof

A technology of switched reluctance motor and control method, which is applied to the shape/style/structure of winding conductors, electrical components, magnetic circuit rotating parts, etc., and can solve chopper failure, complex control algorithm, and bearingless motor suspension instability etc. to achieve stable control effects, simplify control algorithms, and avoid unbalanced effects

Inactive Publication Date: 2016-08-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the operating performance of the motor, the required control algorithm is quite complex
In addition, when the motor speed rises to a certain level, due to the dual drive of the transformer potential and the motion potential, the excitation c

Method used

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  • Dual-winding bearingless switched reluctance motor and control method thereof
  • Dual-winding bearingless switched reluctance motor and control method thereof

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[0016] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] Such as figure 1 The structure diagram of the present invention shown is a dual-winding bearingless switched reluctance motor (prescribed counterclockwise as the positive direction of rotation), including a stator with 12 tooth poles and a rotor with 4 tooth poles. There is no winding on the rotor. The stator teeth are all wound with a main winding and an auxiliary winding. The stator teeth of the same phase are separated by two stator teeth of other phases. The main windings of the stator teeth of the same phase are connected in series. The auxiliary windings on each stator tooth The winding and the auxiliary winding on the stator tooth pole diametrically opposite to it are connected in reverse series. The tooth pole of each rotor is wider than the stator tooth pole by α, α ≥30°, so that each phase inductance has a maximum inductance of ...

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Abstract

The invention discloses a dual-winding bearingless switched reluctance motor and a control method thereof. The motor comprises a stator having 12 tooth poles and a rotor having 4 tooth poles. The rotor has no winding. Main windings and auxiliary windings are wound on each stator tooth pole. The stator tooth poles of the same phase are separated by two stator tooth poles of other phase. The main windings of the stator tooth poles of the same phase are connected in series in turn. The auxiliary windings of each stator tooth pole and the auxiliary windings of the radially opposite stator tooth poles are reversely connected in series. Current of the main windings is unidirectionally conducted. Current of the auxiliary windings is bidirectionally conducted. Each rotor tooth pole is wider than the stator tooth pole for 30 degrees. Each phase of electric inductor has a maximum inductance flat area of 1/3 period so that decoupling of motor suspension force and torque on the mechanism of production is realized, the control algorithm is simplified, and more stable control of instantaneous suspension force can be realized.

Description

technical field [0001] The invention belongs to the technical field of a bearingless switched reluctance motor, and in particular relates to a double-winding bearingless switched reluctance motor and a control method thereof. Background technique [0002] Switched reluctance motor has the characteristics of simple structure, reliable operation, low cost, high temperature resistance, high fault tolerance and high speed adaptability, etc., and has been widely used in aerospace, military, civil and other fields. The bearingless switched reluctance motor (hereinafter referred to as BSRM), which integrates the functions of magnetic bearing and motor, realizes levitation operation while greatly reducing the volume and weight, and improving the power density. Due to the dual functions of rotation and suspension, the high-speed adaptability of BSRM is further improved, and it has better application advantages in aerospace and military fields. Compared with the single-winding struct...

Claims

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Application Information

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IPC IPC(8): H02K3/18H02K3/28H02K1/24H02N15/00
CPCH02K3/18H02K1/24H02K3/28H02N15/00
Inventor 曹鑫周京星邓智泉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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