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Self-starting permanent magnet motor suitable for fans and constant-torque loads

A permanent magnet motor and constant torque technology, applied in the field of motors, can solve the problems of low efficiency and high cost of asynchronous motors, and achieve the effects of reducing material consumption, reducing the cost of magnetic steel, and high power factor

Pending Publication Date: 2020-09-11
王臻炜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a self-starting permanent magnet motor suitable for fans and constant torque loads, which solves the problems of low efficiency of existing asynchronous motors and high cost of high-efficiency motors

Method used

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  • Self-starting permanent magnet motor suitable for fans and constant-torque loads
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  • Self-starting permanent magnet motor suitable for fans and constant-torque loads

Examples

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Embodiment 1

[0021] Such as figure 1 As shown, the present invention provides a technical solution: a self-starting permanent magnet motor suitable for fans and constant torque loads, including a circular rotor core 1, rotor shaft 2, ferrite magnets 3 and self-starting permanent magnet motors. Start the squirrel cage aluminum guide bar 5, the number of the self-starting squirrel cage aluminum guide bar 5 is 28, and the circular rotor core 1 is evenly provided with 28 squirrel cage slots 4, and each squirrel cage slot 4 is made of cast aluminum Squirrel cage aluminum guide bars 5 are formed, and the ends of all aluminum guide bars 5 are connected by short-circuit rings to form a self-starting squirrel cage. The rotor shaft 2 is located at the axis center of the circular rotor core 1 . The number of ferrite magnets 3 is four, and the ferrite magnets 3 are distributed inside the circular rotor core 1 .

[0022] The circular rotor iron core 1 can be provided with an air magnetic isolation gr...

Embodiment 2

[0024] Such as figure 1 As shown, the present invention provides a technical solution: a self-starting permanent magnet motor suitable for fans and constant torque loads, including a circular rotor core 1, rotor shaft 2, ferrite magnets 3 and self-starting permanent magnet motors. Start the squirrel cage aluminum guide bar 5, and the number of self-starting squirrel cage aluminum guide bars 5 is 20. A plurality of squirrel cage slots 4 are evenly opened on the circular rotor core 1, and each squirrel cage slot 4 is made of cast aluminum. Squirrel cage aluminum guide bars 5 are formed, and the ends of all aluminum guide bars 5 are connected by short-circuit rings to form a self-starting squirrel cage. The rotor shaft 2 is located at the axis center of the circular rotor core 1 .

[0025] The number of ferrite magnets 3 is eight, and the ferrite magnets 3 are distributed on the surface of the circular rotor core 1 .

[0026] The design object of this invention is 4, 6, 8 pole ...

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Abstract

The invention discloses a self-starting permanent magnet motor suitable for fans and constant torque loads. The self-starting permanent magnet motor is characterized by structurally comprising a circular rotor core, a rotor shaft, ferrite magnetic steel and self-starting squirrel-cage aluminum conducting bars. A plurality of squirrel-cage grooves are uniformly formed in the circular rotor core, and one squirrel-cage aluminum conducting bar is formed in each squirrel-cage groove by an aluminum casting process. The invention relates to the technical field of motors, in particular to a self-starting permanent magnet motor suitable for fans and constant torque loads. The ferrite instead of a common rare earth permanent magnet material is used as a permanent magnet material, so that the magnetic steel cost is greatly reduced; the motor belongs to a low-cost permanent magnet motor, and the consumption of rare earth strategic materials is reduced for the country to a certain extent; comparedwith an IE1 standard asynchronous motor, the cost of the provided motor is slightly increased, the efficiency index can reach the IE4 standard, and the high energy efficiency standard is realized at low cost; compared with an asynchronous motor, the provided motor has slightly high power factor, and the efficiency is remarkably improved; the self-starting performance is better than that of a permanent magnet synchronous motor.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a self-starting permanent magnet motor suitable for fans and constant torque loads. Background technique [0002] At present, in the market, there are tens of millions of fans and motors used in constant torque loads that do not comply with the national energy efficiency policy. The amount of electric energy wasted due to the efficiency of asynchronous motors is huge and cannot be estimated. New applications for fans and pumps, The value of asynchronous motors in applications such as conveyor belts is not less than one billion yuan. [0003] At present, in applications such as fans, pumps, and conveyor belts, the load types are usually fans and constant torque loads, and almost all the motors used are asynchronous motors, which have the defect of low efficiency, and their efficiency indicators can only reach IE1 stipulated by the state. Energy efficiency standards; if a high-effi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/16H02K17/26H02K1/27
CPCH02K17/16H02K17/26H02K1/276
Inventor 王荣火王臻炜
Owner 王臻炜
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