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Permanent magnet auxiliary type synchronous reluctance motor of alternating salient pole rotor

A technology of synchronous reluctance motor and salient pole rotor, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit characterized by magnetic materials, magnetic circuit, etc., can solve the problem of low power factor of synchronous reluctance motor, and achieve Strong market application prospects, torque boost, and power factor boost effects

Pending Publication Date: 2022-04-12
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention aims to solve the problem of low power factor of synchronous reluctance motor, and provides a permanent magnet assisted synchronous reluctance motor with alternating salient pole rotor

Method used

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  • Permanent magnet auxiliary type synchronous reluctance motor of alternating salient pole rotor
  • Permanent magnet auxiliary type synchronous reluctance motor of alternating salient pole rotor
  • Permanent magnet auxiliary type synchronous reluctance motor of alternating salient pole rotor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one, as figure 1 As shown, a permanent magnet assisted synchronous reluctance motor with an alternating salient pole rotor includes a stator core 1 , a stator winding 2 , a rotor core 3 , a permanent magnet 4 , a rotating shaft 5 , a magnetic pole 7 and a magnetic barrier 8 .

[0018] Stator core 1 is made of laminated circular silicon steel sheets. Stator winding 2 is embedded in the slot of stator core 1. Three-phase alternating current is passed through the winding to form a changing magnetic field. Stator core 1 and rotor core 3 are coaxial.

[0019] The rotor core 3 is formed by laminating convex silicon steel sheets. There are 8 magnetic poles 7 in the rotor core 3. The 8 magnetic poles are rotationally symmetrical about the axis. The rotor core 3 is provided with eight magnetic barriers 8 along the circumferential direction. Each Magnetic barrier 8 is on the inner side of a magnetic pole 7, and magnetic barrier 8 is symmetrical about the axis center, a...

Embodiment 2

[0020] Embodiment two, such as image 3 As shown, a permanent magnet assisted synchronous reluctance motor with an alternating salient pole rotor includes a stator core 1 , a stator winding 2 , a rotor core 3 , a permanent magnet 4 , a rotating shaft 5 , a magnetic pole 7 and a magnetic barrier 8 .

[0021] Stator core 1 is made of laminated circular silicon steel sheets. Stator winding 2 is embedded in the slot of stator core 1. Three-phase alternating current is passed through the winding to form a changing magnetic field. Stator core 1 and rotor core 3 are coaxial.

[0022] The rotor core 3 is formed by laminating convex silicon steel sheets. There are 8 magnetic poles 7 in the rotor core 3. The 8 magnetic poles are rotationally symmetrical about the axis. There are three magnetic barriers 8 inside each magnetic pole 7. The three magnetic barriers 8 are sequentially connected to form a V-like structure with a horizontal bottom. The opening of the V-like structure faces the ...

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Abstract

The invention relates to a synchronous reluctance motor, in particular to a permanent magnet auxiliary synchronous reluctance motor of an alternating salient pole rotor. The permanent magnet auxiliary type synchronous reluctance motor comprises a stator iron core, a stator winding, a rotor iron core, permanent magnets and a rotating shaft. Three-phase alternating current is conducted in the stator winding to generate a variable magnetic field. A rotor iron core is of a circumferentially symmetrical salient pole structure, the number of protruding magnetic poles is eight, magnetic barriers are formed in the circumferential direction, one permanent magnet is placed every other magnetic barrier, the permanent magnets with the same polarity are placed in the magnetic barriers symmetrical about the axis center, and the permanent magnets are made of ferrite, so that the salient pole rotor with the consequent poles is formed. The permanent magnet auxiliary synchronous reluctance motor using the alternating salient pole rotor improves the power factor.

Description

technical field [0001] The invention relates to a synchronous reluctance motor, in particular to a permanent magnet assisted synchronous reluctance motor with an alternating salient pole rotor. Background technique [0002] The synchronous reluctance motor is an AC motor that uses the different reluctance of the rotor at different positions to generate magnetic pull to drive the motor to rotate, based on the principle of minimum reluctance path closure. The synchronous reluctance motor rotor does not require winding coils, and has the advantages of simple structure, high reliability, and low cost, and has strong application prospects in the industrial field. But the power factor of synchronous reluctance motor is relatively low. In addition, permanent magnet motors often use NdFeB permanent magnets, which have many excellent characteristics, but they are expensive, rare earth resources are non-renewable resources, and the manufacturing process causes serious environmental p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/24H02K1/276H02K1/16H02K1/02H02K29/00
Inventor 朱磊李雪珍
Owner CRRC YONGJI ELECTRIC CO LTD