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Disk type permanent magnet motor rotor capable of automatically weakening magnetism

A permanent magnet motor, disc technology, applied in the shape/style/structure of the magnetic circuit, rotating parts of the magnetic circuit, etc., can solve the problems of increasing copper consumption and reducing efficiency, reducing copper consumption, improving motor efficiency, The effect of a large field weakening range

Inactive Publication Date: 2011-10-05
江苏亚星波纹管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing magnetic field weakening control of permanent magnet motors requires an additional adjustment controller or DC excitation coil, which increases copper consumption and reduces the efficiency of the system in the high-speed area, a disk that can automatically weaken the field is proposed. permanent magnet motor rotor

Method used

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  • Disk type permanent magnet motor rotor capable of automatically weakening magnetism
  • Disk type permanent magnet motor rotor capable of automatically weakening magnetism
  • Disk type permanent magnet motor rotor capable of automatically weakening magnetism

Examples

Experimental program
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specific Embodiment approach 1

[0010] Specific implementation mode one: combine figure 1 , figure 2 , image 3 Describe this embodiment, this embodiment comprises rotor iron core 1, and it also comprises disc-shaped permanent magnet sliding assembly, and disc-shaped permanent magnet sliding assembly is made up of rectangular permanent magnet 2, permanent magnet frame 3, disc-shaped permanent magnet sliding end Cover 4 and spring 5, the rectangular permanent magnet 2 is tightly installed in the permanent magnet frame 3, the disc-shaped permanent magnet sliding end cover 4 of the disc-shaped permanent magnet sliding assembly is installed in the rotor core 1 On one end face of the disc-shaped permanent magnet sliding end cover 4, there are a plurality of convex-shaped through holes 4-1, and the convex-shaped through-holes 4-1 are formed around the central axis of the disc-shaped permanent magnet sliding end cover 4. Open radially and evenly, the small rectangular end of the plurality of convex-shaped throug...

specific Embodiment approach 2

[0011] Specific implementation mode two: combination Figure 5 , Figure 6 This embodiment is described. The first difference between this embodiment and the specific embodiment is that the end surface of the permanent magnet frame 3 located at the small rectangular end is provided with a connecting end 3-1, and the connecting end 3-1 is provided with a connecting hole 3-1-1. Other compositions and connection methods are the same as those in Embodiment 1. The connection hole 3-1-1 is provided for the convenience of fixed connection with the spring 5 .

specific Embodiment approach 3

[0012] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the two end faces of the rotor core 1 are provided with the same disc-shaped permanent magnet sliding assembly. Other compositions and connection modes are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a disk type permanent magnet motor rotor capable of automatically weakening magnetism, relating to a permanent magnet motor rotor and solving the problem that an adjustment controller or a DC magnet exciting coil is needed to be additionally arranged for realizing weak magnetism control of a permanent magnet motor to cause the increase of copper consumption and the efficiency reduction of a system in a high-speed region in prior art. A sliding end cover of a disk type permanent magnet is arranged on one end surface of a rotor iron core, a plurality of raised type through holes are uniformly and radially arranged around a center axes of the siding end cover of the disk type permanent magnet, and permanent magnet shielding edges are respectively symmetrically arranged at two sides of the large rectangular end of each of the raised type through holes, which is arranged on the end surface at one side of a stator iron core; the permanent magnet shielding edges and acavity arranged at the large rectangular end of each of the raised type through holes form a sliding channel along the radius direction, and a permanent magnet frame provided with a rectangular permanent magnet is embedded in the sliding channel along the radius direction slidably; springs are arranged inside small rectangular ends of the raised type through holes, and weak magnetism can be realized without being additionally provided with a controller or a DC magnet exciting coil, thereby reducing the copper consumption and improving the efficiency of the motor.

Description

technical field [0001] The invention relates to a permanent magnet motor rotor, in particular to a disk type permanent magnet motor rotor. Background technique [0002] At present, in order to maintain the constant power operation of the permanent magnet motor in a wide speed range, people have adopted the field-weakening speed expansion technology to expand the output power of the permanent magnet motor at high speed. In the prior art, there are mainly two schemes for realizing field-weakening control of permanent magnet motors. One is to adjust the armature current through the controller, and use the demagnetization magnetic potential generated by the direct axis current component in the armature winding to offset the generation of some permanent magnets. The magnetomotive force of the excitation, so as to achieve the purpose of weakening the main flux; the second is to adopt the hybrid excitation scheme, that is, add a DC excitation coil on the basis of the traditional pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27
Inventor 郑萍赵静佟诚德隋义闫海媛
Owner 江苏亚星波纹管有限公司