Single-phase permanent magnet alternating current motor

An AC motor, single-phase permanent magnet technology, applied in the direction of magnetic circuit, electric components, electrical components, etc., can solve the problems of reduced rotor magnetic steel capacity, larger equivalent width of air-gap magnetic field, affecting motor efficiency, etc. Achieve uniform air gap, harmonic reduction, noise reduction effect

Inactive Publication Date: 2018-09-14
FORTIOR TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unevenness of the air gap also increases the equivalent width of the air gap magnetic field, which reduces the ability of the rotor magnet to generate the air gap magnetic field, thereby affecting the efficiency of the motor.

Method used

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  • Single-phase permanent magnet alternating current motor
  • Single-phase permanent magnet alternating current motor
  • Single-phase permanent magnet alternating current motor

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses a single-phase permanent magnet alternating current motor. The single-phase permanent magnet alternating current motor comprises a stator assembly and a rotor assembly. The stator assembly comprises a stator core and a winding, the stator core comprises a plurality of teeth, and the winding is wound on the teeth; the rotor assembly is mounted on an inner hole, the rotor assembly is provided with at least one pair of magnetic poles, and the specific value of the quantity of the number of pole pairs and the quantity of the teeth is 1: 4. Through the technical scheme, thespecific value of the quantity of the number of pole pairs and the quantity of the teeth is 1: 4, when the motor is static, the rotor assembly remains at four specific positions, and starting torquescan be generated at the four specific positions under the condition that a structure with large and small sides is not arranged. The structure with large and small sides is not arranged, and the air gap of the single-phase permanent magnet alternating current motor in the invention is uniform, so that the harmonic wave of an air-gap magnetic field is reduced compared with that in the prior art, and the noise can be reduced to a certain extent.

Description

technical field [0001] The invention relates to the field of motors, in particular to a single-phase permanent magnet AC motor. Background technique [0002] Single-phase permanent magnet AC motors are widely used in various occasions because of their simple electromagnetic structure and drive system, no unilateral magnetic pull, and good ventilation channels. Traditionally, the relationship between the number of teeth of the stator core of this type of motor and the number of rotor pole pairs is 2:1. In order to enable the motor to generate starting torque, the stator core of the traditional single-phase permanent magnet AC motor must use a "large and small side" structure, such as figure 1 As shown, the existence of this "big and small side" makes the distance between the motor stator core and the rotor magnetic steel change at different stator positions, that is, the air gap of the motor is not uniform. Make the air gap of the motor uneven so that when the rotor stops, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/03H02K1/14H02K1/27
CPCH02K29/03H02K1/146H02K1/272H02K2213/03
Inventor 毕超毕磊
Owner FORTIOR TECH SHENZHEN
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