Permanent magnetic motor rotor capable of automatically regulating magnetism

A permanent magnet motor and automatic adjustment technology, which is applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc. Efficiency does not decrease, system efficiency decreases, etc.

Inactive Publication Date: 2006-01-25
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects of low torque in low-speed operation and decrease in system efficiency in high-speed operation of the rotor in the prior art, a motor that does not reduce the torque in low-speed operation and does not decrease in system efficiency in high-speed operation is provided. permanent magnet motor rotor
The invention overcomes the defects of low torque at low speed and decreased system efficiency at high speed in the prior art, has the advantages of simple structure, reliable operation and easy popularization and implementation, and can be used in permanent magnet synchronous motors or brushless DC motors, and can also be used in permanent magnet synchronous generator

Method used

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  • Permanent magnetic motor rotor capable of automatically regulating magnetism
  • Permanent magnetic motor rotor capable of automatically regulating magnetism
  • Permanent magnetic motor rotor capable of automatically regulating magnetism

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0005] Specific Embodiment 1: The present embodiment will be specifically described below with reference to FIG. 2 and FIG. 3 . It consists of a rotor core 1, a main pole permanent magnet 3, and a magnetic field weakening unit 4. The rotor core 1 is made of silicon steel sheets. The cylindrical rotor core 1 has several parallel to the axis line and rectangular end faces. The rotor core slots 1-1, the several rotor core slots 1-1 are evenly distributed along the circumferential direction on the end face of the rotor core 1, the main pole permanent magnets 3 are embedded in the rotor core slots 1-1, the main pole permanent magnets 3 are The radial direction of the rotor core 1 is filled with a magnetic field in parallel, and the magnetic field weakening unit 4 is composed of a magnetically permeable block 4-1, a moving side 4-2 of the permanent magnet, a fixed side 4-3 of the permanent magnet and a non-magnetically conductive sliding block. Composed of rails 4-4, between every t...

specific Embodiment approach 2

[0006] Specific embodiment two: below in conjunction with Fig. 4 and Figure 5 This embodiment will be specifically described. The difference between this embodiment and Embodiment 1 is that there are two magnetic isolation slots 4-7 between each two adjacent main pole permanent magnets 3, and the magnetic isolation slots 4-7 are close to the 1 axis of the rotor core. The end of the rotor is connected with the rotor core slot 1-1, and there is a slide rail slot 4-9 at the yoke 4-8 at the end of the magnetic isolation slot 4-7 near the rotor core 1 axis line, and the slide rail slot 4-9 is inlaid with the same slide rail 4-4 as the first embodiment, and the magnetic isolation groove 4-7 is provided with the same composition and connection method as the first embodiment of the magnetic block 4-1, moving side 4-2 , Fixed side 4-3. This embodiment has less flux leakage and greater torque when running at low speed.

specific Embodiment approach 3

[0007] Embodiment 3: The difference between this embodiment and Embodiment 1 or Embodiment 2 is that the magnetically conductive block 4-1 and the moving part 4-2 are bonded together.

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Abstract

The present invention discloses a permanent magnetic electric machine rotor capable of making magnetic regulation, it includes rotor iron core and main pole permanent magnet, it also includes weakly magnetic unit formed from magnetoconducting block, permanent magnetic moving component, permanent-magnetic fixed component and non-magnetoconducting slideway.

Description

Technical field: [0001] The invention relates to a permanent magnet motor rotor capable of automatic magnetic adjustment. Background technique: [0002] The existing magnetic steel embedded structure permanent magnet synchronous motor rotor is to directly embed the main pole permanent magnet 2 into the rotor core slot, and its structure is as follows: figure 1 shown. The rotor with this structure has good mechanical strength and is suitable for high-speed applications. However, the rotor with this structure still has some leakage magnetic flux at the magnetic bridge 5, so the torque is low when running at low speed. However, field weakening speed regulation is also required during high-speed operation, so the system efficiency decreases in high-speed areas. Invention content: [0003] In order to overcome the defects of low torque in low-speed operation and decrease in system efficiency in high-speed operation of the rotor in the prior art, a motor is provided that does...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K21/12H02K21/14
Inventor寇宝泉程树康李立毅
OwnerHARBIN INST OF TECH