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Method for transforming three-phase asynchronous motor into permanent magnet motor

A permanent magnet motor, three-phase asynchronous technology, applied in the manufacture of stator/rotor body, etc., can solve the problems of low energy efficiency level of permanent magnet rotor, high machining requirements, troublesome transformation, etc., to achieve enhanced mechanical strength, reliable start, and improved reliability effect

Active Publication Date: 2014-09-17
王贤长
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high requirements for machining, troublesome transformation, and the energy efficiency level of the transformed permanent magnet rotor is low

Method used

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  • Method for transforming three-phase asynchronous motor into permanent magnet motor
  • Method for transforming three-phase asynchronous motor into permanent magnet motor
  • Method for transforming three-phase asynchronous motor into permanent magnet motor

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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0015] This method of transforming a three-phase asynchronous motor into a permanent magnet motor of the present invention comprises the following steps:

[0016] Cut off part of the iron core on the outer circumference of the rotor according to the design requirements, retain part of the copper / aluminum guide bars in the iron core, and retain part of the end rings at both ends of the iron core. The bars and end rings can still generate an induced magnetic field.

[0017] Paste four groups of magnetic steel on the outer circumference of the rotor, and the arrangement direction of each group of magnetic steel can be a straight line or an oblique line. Each group of magnets can be composed of 3, 3.5, 4 and other different numbers of magnets.

[0018] After pasting the magnetic...

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Abstract

The invention provides a method for transforming a three-phase asynchronous motor into a permanent magnet motor. The method comprises the following steps that part of an iron core on the outer circumference of a rotor is cut off according to design needs, four sets of magnetic steel are attached to the outer circumference of the rotor, the clearances between the magnetic steel are coated with non-magnetic material layers, the outer sides of the magnetic steel are covered with non-magnetic metal layers, dynamic balance is detected, the transformed rotor is arranged in a stator, and the permanent magnet motor is formed.

Description

technical field [0001] The invention relates to a method for transforming a three-phase asynchronous motor into a permanent magnet motor, which belongs to the motor transformation technology. Background technique [0002] Permanent magnet motors do not require excitation current and have a high power factor. The existing three-phase asynchronous motor generates a rotating magnetic field after the three-phase symmetrical alternating current is passed through the three-phase stator winding, and the rotating magnetic field cuts the rotor winding, thereby generating an induced current in the rotor winding. The electromagnetic force is generated under the action of the rotating magnetic field, thereby forming an electromagnetic torque on the motor shaft to drive the motor to rotate. The existing three-phase asynchronous motor has limited efficiency, and it is necessary to transform it into a permanent magnet motor. The inventors of the present invention have proposed permanent ...

Claims

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Application Information

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IPC IPC(8): H02K15/02
Inventor 王贤长
Owner 王贤长
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