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Double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor

A technology of asynchronous starting and permanent magnet synchronization, which is applied to electrical components, electromechanical devices, etc., and can solve problems such as unsuitable for small-sized motors and complex structures.

Active Publication Date: 2014-12-03
HEPING CHANGSHENG MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the traditional built-in rotor with complex structure and not suitable for small-sized motors, and to provide a dual-magnetic circuit asynchronous start permanent magnet synchronous motor rotor with simple structure, asynchronous start, and large starting torque

Method used

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  • Double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor
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  • Double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor

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Embodiment Construction

[0045] The present invention is further described below in conjunction with accompanying drawing.

[0046] refer to figure 1 with figure 2 , The rotor of the dual magnetic circuit asynchronous start permanent magnet synchronous motor has two rotor cores, and the two rotor cores are coaxial and staggered by a certain angle to form two rotor permanent magnet magnetic circuits. In a pair of opposite magnetic poles of each rotor core, only one permanent magnet is used as one magnetic pole, and the salient pole of the rotor core is used as the other magnetic pole. There is a rotor yoke between the two rotor cores, and the rotor yoke connects a pair of stator magnetic poles of opposite sex through the stator field magnetic circuit of the salient poles of the two rotor cores. The rotor of double magnetic circuit asynchronous start permanent magnet synchronous motor has two structures: inner rotor type and outer rotor type.

[0047] The rotor of the inner rotor double magnetic cir...

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Abstract

The invention provides a double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor and relates to a rotor applied to a permanent magnet synchronous motor. The rotor is provided with two rotor iron cores. The two rotor iron cores are coaxial and staggered with a certain angle to form two rotor permanent magnet magnetic-circuits. In a pair of opposite magnetic poles of each rotor iron core, only one permanent magnet is used as a magnetic pole, and a rotor iron core salient pole is used as the other magnetic pole. A rotor magnet yoke is arranged between the two rotor iron cores, and the rotor magnet yoke enables a pair of opposite magnetic poles of a stator to be connected through stator magnetic field magnetic circuits of the two rotor iron core salient poles. At any moment of the starting process of the rotor, stator rotating magnetic field magnetic force line path cut by core mouse cage guide bars at the inner side of each rotor iron core salient pole passes through a salient pole air gap twice, magnetic resistance of the stator rotating magnetic field magnetic circuit is minimum, and the double-magnetic-circuit asynchronous-starting permanent magnet synchronous motor rotor is allowed to generate the maximum starting torque.

Description

technical field [0001] The invention relates to a permanent magnet synchronous motor rotor with dual magnetic circuits asynchronous start, which relates to a rotor applied to permanent magnet synchronous motors, in particular to a permanent magnet synchronous motor rotor capable of asynchronous starting with dual magnetic circuits. Background technique [0002] AC asynchronous motors have the advantages of simple structure and low cost. The efficiency of AC asynchronous motors is low, and the efficiency of small AC asynchronous motors is even lower. Compared with AC asynchronous motors, permanent magnet synchronous motors have a high power factor and significant energy-saving effect, so permanent magnet synchronous motors are gradually replacing AC asynchronous motors as mainstream motors. Ordinary permanent magnet synchronous motors cannot start automatically and need to be equipped with a frequency converter, but the cost of the frequency converter is relatively high. Th...

Claims

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Application Information

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IPC IPC(8): H02K16/02
Inventor 赵晓东
Owner HEPING CHANGSHENG MOTOR CO LTD
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