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Stator/rotor permanent magnetic type magnetic-flux-variable axial magnetic flux switching permanent magnetic generator

A permanent magnet generator, axial magnetic flux technology, applied in the direction of magnetic circuit, electric components, electrical components, etc., can solve the problem of insufficient power/torque density, improve the efficiency of magnetization and weakening operation, shorten the main Magnetic circuit, the effect of widening the range of constant power speed regulation

Active Publication Date: 2018-09-04
XIAN UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a stator / rotor permanent magnet type variable flux axial flux switching permanent magnet generator, which solves the problem that the power / torque density of the existing axial variable magnetic flux switching permanent magnet generator is not high enough question

Method used

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  • Stator/rotor permanent magnetic type magnetic-flux-variable axial magnetic flux switching permanent magnetic generator
  • Stator/rotor permanent magnetic type magnetic-flux-variable axial magnetic flux switching permanent magnetic generator
  • Stator/rotor permanent magnetic type magnetic-flux-variable axial magnetic flux switching permanent magnetic generator

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Embodiment Construction

[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The present invention is a stator / rotor permanent magnet type variable magnetic flux axial flux switching permanent magnet generator, such as figure 1 As shown, it includes a first rotor 1 , a first stator 2 , a second rotor 3 , a second stator 4 , a third rotor 5 , a first rotor 1 and a third rotor 5 , and a first stator 2 , which are coaxially installed in sequence. The second stator 4 is symmetrical with respect to the center of the second rotor 3 , and the first rotor 1 , the first stator 2 , the second rotor 3 , the second stator 4 , and the third rotor 5 are all salient pole structures.

[0030] The first stator 2 and the second stator 4 have the same structure, and both include a stator core 2-4 with a circular opening in the middle. Twelve stator teeth are evenly arranged on the two circular surfaces of the stator core 2-4. The s...

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Abstract

The invention discloses a stator / rotor permanent magnetic type magnetic-flux-variable axial magnetic flux switching permanent magnetic generator. The generator comprises a first rotor, a first stator,a second rotor, a second stator and a third rotor which are installed coaxially in order, the first rotor and the third rotor are symmetric by taking the second rotor as the center, the first statorand the second stator are symmetric by taking the second rotor as the center, and each of the rotors and stators is of a salient pole structure. An aluminum-nickel-cobalt permanent magnet is low in acoercive force, so that different pulse currents are applied to change the magnetization magnitude and direction of the aluminum-nickel-cobalt permanent magnet, the magnetization level of the permanent magnet can be changed and memorized, and an air gap magnetic field of a motor can be controlled flexibly by adjusting the directions and magnitudes of the pulse currents. In addition, a pulse winding only applies a magnetizing / demagnetizing current in a very short time, there is nearly no exciting copper loss, and the problem that the power or torque density of an existing axial variable magnetic flux switching permanent magnetic generator is not high enough is solved.

Description

technical field [0001] The invention belongs to the technical field of variable magnetic flux permanent magnet synchronous motors, in particular to a stator / rotor permanent magnet type variable magnetic flux axial magnetic flux switching permanent magnet generator. Background technique [0002] In recent years, permanent magnet synchronous generators have been widely used in wind power generation. The permanent magnet synchronous generator is excited by permanent magnets, and has the characteristics of simple structure and high power generation efficiency. By controlling the full power converter, the permanent magnet synchronous generator can operate at variable speed with the change of wind speed to achieve maximum wind energy capture. However, due to the very stable performance of the permanent magnets of the permanent magnet synchronous generator, the air gap flux is difficult to adjust, which limits the adjustment range of the generator speed. Therefore, according to th...

Claims

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Application Information

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IPC IPC(8): H02K16/00H02K1/14H02K1/17H02K1/27
CPCH02K1/14H02K1/17H02K1/2793H02K16/00H02K2201/03
Inventor 赵纪龙全小伟景梦蝶孙向东
Owner XIAN UNIV OF TECH
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