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Audio Switch type AC induction motor

An induction motor, switch-type technology, applied in the direction of asynchronous induction motors, electrical components, electromechanical devices, etc., can solve the problems of manufacturing cost, speed range output torque can not meet, etc., to achieve low manufacturing cost, large speed range, small size effect

Inactive Publication Date: 2003-08-20
黄有国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of motor has obvious improvements in speed regulation, size and weight, etc., its manufacturing cost, speed regulation range, output torque, etc. still cannot meet the increasing requirements for higher performance.

Method used

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  • Audio Switch type AC induction motor
  • Audio Switch type AC induction motor
  • Audio Switch type AC induction motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 Shown is a transverse section view of the stator and rotor of a 16-slot, 4-pole, two-phase motor. In the figure, "010" is a hollow cylindrical stator core, "101" is a stator slot penetrating in the axial direction, and "102" is a Stator yoke, "103" is the stator teeth extending radially inward and distributed at equal angles, the stator slots and the inner surface of the stator ring are arranged alternately, "020" is a rotor with a cylindrical surface, "104" is Along the cylindrical surface of the motor rotor core, the parallel conductive strips are distributed at equal intervals, and the conductive strips and the conductive rings (not shown) on the two end faces of the cylindrical body are fused to form a metal induction body similar to a squirrel cage structure. , "105" is the rotor core, "106" is the rotor shaft, and "107" is the air gap between the rotor and the stator. ) is supported. When the number Z of stator slots or teeth is constant, if the number ...

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PUM

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Abstract

The audio switch type AC induction motor has stator and rotor iron cores comprising punched sheets of soft magnetic material or ferrite with proper frequency characteristics. The rotor is in squirrelcage structure and the stator magnetic poles operate in switching excitation mode with exciting voltage being pulse width or amplitude modulated voltage in audio or ultra-audio range. In the condition of the same output power, the motor of the present invention has volume and weight several times or over ten times smaller, low production cost, excellent mechanical characteristic and step-less speed regulation from zero to several thousand rpm.

Description

technical field [0001] The present invention relates to a new type of motor, more precisely a switched AC induction motor in the audio and super audio range. Background technique [0002] The existing AC induction motors are mainly squirrel-cage AC asynchronous induction motors. Compared with brushed DC motors, they have the advantages of simple structure, low cost and large output torque. This kind of motor is usually excited by two phases with a phase difference of 90°, or a three-phase continuous sine wave voltage with a phase difference of 120°, which generates a continuous sine wave rotating magnetic field in the air gap between the stator and the rotor, thereby making the squirrel cage The formula rotor rotates, and its speed can be calculated by the following formula: n=60*f1 / p, where p is the number of magnetic pole pairs of the motor stator, and f1 is the excitation AC frequency. It can be seen that after the structure of the motor is de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K1/26H02K17/16
Inventor 黄有国黄薇
Owner 黄有国
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