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Motor using local magnetic saturation effect of stator to improve starting dead point

A starting dead point and stator technology, applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit stationary parts, magnetic circuit rotating parts, etc., can solve problems such as starting dead points

Inactive Publication Date: 2007-03-21
SUNONWEALTH ELECTRIC MACHINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the present invention, the main purpose of using the stator local magnetic saturation effect to improve the starting dead point of the motor is to solve the problem of starting dead point in the existing permanent magnet brushless motor

Method used

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  • Motor using local magnetic saturation effect of stator to improve starting dead point
  • Motor using local magnetic saturation effect of stator to improve starting dead point
  • Motor using local magnetic saturation effect of stator to improve starting dead point

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Embodiment Construction

[0027] The present invention can be applied to the external rotation type or internal rotation permanent magnet brushless motor of the coil radial winding radial air gap, or can be applied to the permanent magnet brushless motor of the coil axial winding radial air gap, as shown in Figure 1 As shown, the externally rotating motor with radial coil radial winding and radial air gap includes a hollow rotor 10 and a stator 20 installed inside the rotor 10. The rotor 10 is equipped with several different magnetic polarities on the inner wall of a hollow yoke 11 and The permanent magnets 13 arranged alternately, the center of the rotor 10 is provided with an axis 14, the stator 20 has a silicon steel sheet 21, the center of the silicon steel sheet 21 is pivoted to the axis 14, and the periphery of the silicon steel sheet 21 has several extensions extending radially 23. The end of each extension 23 has a magnetic pole 24. The outer edge of the magnetic pole 24 forms an outwardly protr...

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Abstract

The invention discloses a motor of using stator partial magnetic saturation to improve startup dead spot, composed of a rotor with permanent magnet and a stator with silicon steel sheet winding, where the pole edge at the magnetic pole of silicon steel sheet gear slot and the rotor permanent magnet keep equal air gap between them, and the magnetic poles are designed nonsymmetrically relative to the blocks on two sides of its centre line. The invention uses the nonsymmetrical design of the stator magnetic poles to cause partial magnetic saturation in the magnetic poles, making the air gap flux density distribution nonuniform and generating nonsymmetrical magnetic linkage waveform, and then changing the distribution of output torsion waveform of the motor, and thus improving startup dead spot.

Description

technical field [0001] The invention relates to a motor which utilizes the partial magnetic saturation effect of the stator to improve the starting dead point. More specifically, it relates to a motor which can improve the starting dead point under the premise of equal air gap length and no change of the stator magnetic pole edge. motor. Background technique [0002] The current known permanent magnet brushless motor only conducts a group of coils to generate magnetic force per unit time, and then uses the principle of magnetic force to drive the rotor to run. It mainly includes a stator and a motor fixed on the inside or outside. The rotor, in which the stator is wound with coils at each magnetic pole, and an air gap of an appropriate length is maintained between the pole edge of the magnetic pole and the permanent magnet of the rotor, through the interaction between the magnetic field generated by the stator coil and the permanent magnet of the rotor. Drive the rotor to r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/14H02K1/27H02K21/22H02K29/00
Inventor 洪银树蔡明祺许良伊
Owner SUNONWEALTH ELECTRIC MACHINE IND