Bypass mixed excitation electrical motor

A technology of hybrid excitation motor and excitation winding, applied in the direction of magnetic circuit shape/style/structure, electrical components, electromechanical devices, etc., can solve the problems of irreversible demagnetization of permanent magnet materials and reduce the reliability of motors, and achieve simple and reliable control strategies High performance and wide adjustable range

Inactive Publication Date: 2006-07-26
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous increase of the direct axis demagnetization current, the danger of irreversible demagnetization will occur in the permanent magnet material, which reduces the reliability of the motor

Method used

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  • Bypass mixed excitation electrical motor
  • Bypass mixed excitation electrical motor
  • Bypass mixed excitation electrical motor

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Embodiment Construction

[0026] The bypass hybrid excitation motor of the present invention will be further described in detail in conjunction with the accompanying drawings and specific embodiments:

[0027] 1) In order to ensure the effective control of the DC excitation magnetic field, it is necessary to ensure that the second air gap is smaller than the length of the air gap between the stator and rotor of the motor in the manufacture of the motor, and the smaller the better. In the embodiment of the present invention: the inner side of the end cover 2 is processed into a shape with a two-way side wall flange 10, and one side of the flange 10 just matches the inner circle of the rotor to ensure that the second air gap is as small as possible, even if the motor has a longitudinal direction. The other side of the flange 10 is used to fix the DC field windings 3 and 11. For details, see figure 1 .

[0028] 2) Since the second air gap is smaller than the length of the air gap between the stator and r...

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Abstract

This invention relates to side path mixture excitation motor, which comprises Shell, two end covers, two sets of excitation coil set, rotor and stator, wherein, the rotor surface magnetic electrode is formed by permanent magnetic electrode and iron magnetic rotor electrode by crossing; two sets of direct current excitation sets are separately fixed on left and right end covers; the shell and end cover are made of conductive magnetize materials and the axis is of non-iron magnetic materials. This invention adopts magnetic side path method to adjust gap.

Description

technical field [0001] The invention relates to a motor, in particular to a hybrid excitation motor which uses a magnetic flux bypass method to control an air gap magnetic field. Background technique: [0002] my country is rich in rare earth resources, and the development and application of permanent magnet energy-saving motors has great strategic significance. During the "Tenth Five-Year Plan" period, the permanent magnet wind power generator system and the permanent magnet motor drive system for electric vehicles were included in the national 863 major plan and have achieved rapid development; at present, wind power generation and hybrid vehicles have become one of the hot spots that people pay attention to. In the process of studying wind power generation and all-electric or hybrid vehicles with wide-speed variable-speed permanent magnet motor drive system and permanent magnet generator system magnetic field control technology, researchers are prompted to think deeply ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K23/02
Inventor 黄苏融张琪谢国栋应红亮
Owner SHANGHAI UNIV
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