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Magnetic field modulation hybrid excitation motor

A hybrid excitation motor, magnetic field modulation technology, applied to synchronous motors with stationary armatures and rotating magnets, and the shape/style/structure of winding conductors, can solve the problems of complex structure and low reliability, and achieve extended modulation. speed range, beneficial to heat dissipation, and the effect of improving reliability

Active Publication Date: 2017-02-22
THE HONG KONG POLYTECHNIC UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a magnetic field modulation hybrid excitation motor to improve the existing hybrid excitation motors with complex structures and low reliability

Method used

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] figure 1 A schematic structural diagram of a magnetic field modulation hybrid excitation motor 100 provided by an embodiment of the present invention. Such as figure 1 As shown, the field modulated hybrid excitation motor 100 is a rotating electrical machine, including a stator composed of a stator core 110 and a winding 120 , and a rotor composed of a rotor core 130 and a rotor permanent magnet 140 . Wherein, the stator core 110 is designed as an open slo...

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Abstract

The invention discloses a magnetic field modulation hybrid excitation motor including a stator and a rotor, wherein the stator includes a stator core and a winding, the winding includes an AC armature winding and a DC excitation winding, the stator core is designed as an open slot, the AC armature winding and the DC excitation winding are disposed in the open slot of the stator core, the rotor comprises a rotor core and a rotor permanent magnet, the rotor permanent magnet is fixedly arranged on the rotor core, and the AC armature winding interacts with magnetic fields generated by the rotor permanent magnet and the DC excitation winding at the same time. The magnetic field modulation hybrid excitation motor enhances the adjustability of an air gap magnetic field and expands a speed range. By placing the armature winding and the excitation winding in the stator, the rotor part is only made up of the core and the permanent magnet so that structure complexity caused by placing the winding in the rotor part is prevented, motor operation reliability is improved, the heat dissipation of the motor winding is facilitated.

Description

technical field [0001] The invention relates to the field of brushless synchronous motors, in particular to a magnetic field modulation hybrid excitation motor. Background technique [0002] The motor is an important driving component in modern industry, and improving the performance of the motor is of great significance to the development of the industry. Compared with widely used asynchronous motors, permanent magnet synchronous motors have the advantages of low loss, high power density and high power factor. With the development of high-performance permanent magnet materials, the performance of permanent magnet synchronous motors has also been continuously improved. In the fields that have higher requirements for motor performance, permanent magnet synchronous motors are being increasingly widely used. [0003] The air-gap magnetic field of traditional permanent magnet synchronous motors is mainly generated by permanent magnets. Since the adjustable performance of perman...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/22H02K3/20
Inventor 牛双霞刘玉龙傅为农
Owner THE HONG KONG POLYTECHNIC UNIV
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