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A series magnetic circuit hybrid permanent magnet memory motor

A memory motor and magnetic circuit technology in series, applied in the direction of magnetic circuit, magnetic circuit rotating parts, magnetic circuit static parts, etc., can solve the problems of high demagnetization current and low magnetic adjustment performance, and achieve low demagnetization current and low rotor speed. Lifting, the effect of increasing the adjustment range of the magnetization state

Active Publication Date: 2020-10-30
HARBIN UNIV OF SCI & TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of high demagnetization current and low magnetic adjustment performance in the existing series magnetic circuit hybrid permanent magnet memory motor, and now provides a series magnetic circuit hybrid permanent magnet memory motor

Method used

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  • A series magnetic circuit hybrid permanent magnet memory motor
  • A series magnetic circuit hybrid permanent magnet memory motor
  • A series magnetic circuit hybrid permanent magnet memory motor

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Experimental program
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specific Embodiment approach 1

[0020] Specific implementation mode one: refer to figure 1 and figure 2 Specifically explain this embodiment, a series magnetic circuit hybrid permanent magnet memory motor described in this embodiment includes: an even number of permanent magnet units, a winding 3, a rotating shaft 4, a rotor core 5 and a stator core 6;

[0021] Each pole permanent magnet unit includes two permanent magnets with the same magnetization direction, the two permanent magnets are arranged in a "V" shape, and the angle range of the "V" shape of the two permanent magnets is 120°-135°, further , the optimal value is 130°;

[0022] The rotor core 5 is coaxially sleeved on the outer circumference of the rotating shaft 4, the stator core 6 is coaxially sleeved on the outer circumference of the rotor core 5, the inner circumference of the stator core 6 is provided with a plurality of stator teeth, and the winding 3 is embedded in multiple Between the two stator teeth, the rotor core 5 is provided with...

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Abstract

The invention discloses a series magnetic circuit hybrid permanent magnet memory motor, relates to the field of a permanent magnet memory motor and aims to solve problems that in a series magnetic circuit hybrid permanent magnet memory motor, the demagnetization current is too high, and the magnetism adjusting performance is low. For the series magnetic circuit hybrid permanent magnet memory motor, on the basis of a motor in the prior art, a rubidium-iron-boron magnet and an aluminum-nickel-cobalt permanent magnet are adopted in each pole of permanent magnet unit, and the permanent magnets made of the same material in every two adjacent permanent magnet units are arranged adjacently. The motor is advantaged in that due to special arrangement of the permanent magnets, the pulse current amplitude of permanent magnet working points needing to be changed by the aluminum-nickel-cobalt permanent magnets is smaller, the magnetism adjusting range of the aluminum-nickel-cobalt permanent magnetsis larger, and the permanent magnet motor is suitable for occasions where the motor needs to achieve high-speed operation.

Description

technical field [0001] The invention belongs to the field of permanent magnet memory motors. Background technique [0002] In a conventional permanent magnet motor, a single permanent magnet is used. When the motor is running at high speed, the back EMF of the motor will also increase due to the increase of frequency; when the speed of the motor reaches a certain range, the back EMF will exceed the peak value of the IGBT of the electronic control system. In order to further increase the rotational speed, it is necessary to use the field-weakening speed-expanding technology. Using the method of field weakening and speed expansion, when there is a high requirement on the speed of the motor, a large negative d-axis current needs to be applied to the motor, but this may cause irreversible demagnetization of the permanent magnet. [0003] The series magnetic circuit hybrid permanent magnet memory motor consists of high coercive force NdFeB and low coercive force AlNiCo to form ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/27H02K1/02H02K1/16
CPCH02K1/02H02K1/16H02K1/2753H02K1/2766H02K2213/03
Inventor 谢颖宁召阳魏静微马泽新毛攀胡圣明
Owner HARBIN UNIV OF SCI & TECH
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