Axial excitation double salient pole motors

A double salient motor, axial excitation technology, applied in the magnetic circuit static parts, magnetic circuit rotating parts, magnetic circuit shape/style/structure and other directions, can solve the problem of increasing the outer diameter of the stator, and achieve high excitation efficiency , High utilization rate of axial cross-sectional area, good effect of three-phase winding symmetry

Inactive Publication Date: 2011-04-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition to the armature winding, the above-mentioned motor also needs to be equipped with tangential or radial permanent magnets or field windings on the stator, which will inevitably increase the outer diameter of the stator compared with the switched reluctance motor.

Method used

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  • Axial excitation double salient pole motors
  • Axial excitation double salient pole motors
  • Axial excitation double salient pole motors

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing.

[0027] The first axially excited doubly salient pole motor of the present invention comprises a stator core 1, an armature winding 2, a rotor core 3, a stator axial magnetically conductive back iron 4, a rotating shaft 5 and a rotor axial magnetically conductive back iron 7, and also includes Excitation winding 6 or permanent magnetic steel 8, wherein: at least two double-salient pole single structures arranged in the axial direction are composed of stator core 1, armature winding 2 and rotor core 3, and the stator axial magnetic back iron 4 is the stator Iron core 1 provides an axial magnetic circuit, the rotor axial magnetic back iron 7 provides an axial magnetic circuit for the rotor core 3, the armature winding 2 is wound on the teeth of the stator core 1, and the rotor core 3 passes through the rotor axial magnetic back iron 7 Installed on the rotating shaft 5; when th...

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Abstract

The invention discloses two axial excitation double salient pole motors and belongs to the field of motors with double salient pole structures. Each motor comprises at least two double salient pole monomer structures which are axially arranged, wherein each monomer structure consists of a salient pole stator core, an armature winding wound on the stator core and a salient pole rotor core; the stator core of each monomer structure forms a magnetic circuit through stator axial magnetic back iron; the rotor core forms a magnetic circuit through rotor axial magnetic back iron in a motor structure with an annular excitation winding or annular permanent magnet steel; the stator core, the stator axial magnetic back iron and the permanent magnet steel have arc structures which are equationally divided into 2n (n is a natural number) parts in the motor structure without the rotor axial magnetic back iron; and the rotor of each monomer structure is arranged on a rotating shaft. The motors have the advantages of high space utilization rate of the excitation winding, no additional air gap, high excitation efficiency and high utilization rate of axial sectional areas and can be used as electromotors or generators.

Description

technical field [0001] The invention relates to two kinds of double salient pole motors with axial excitation, and belongs to the field of double salient pole structure motors. Background technique [0002] Professor Lipo of the University of Wisconsin-Madison in the United States added permanent magnet excitation to the switched reluctance motor, and proposed a permanent magnet double salient pole motor. The motor belongs to a variable reluctance motor. Its stator and rotor are salient pole structures. The structure is simple. There is no winding on the rotor and the power density is high. However, because the exciting magnetic field is not easy to adjust, it cannot be used as a generator. [0003] Electric excitation doubly salient motors (such as "doubly salient brushless DC generators", authorized notification number CN1099155C) replace permanent magnets with electric excitation windings, so that the excitation magnetic field of the motor can be adjusted. When working a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/14H02K1/24H02K1/06
Inventor 陈志辉严仰光王娇艳
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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