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Double-stator disc type mixed excitation motor

A hybrid excitation motor and double stator technology, applied in motors, electromechanical devices, electric vehicles, etc., can solve the problem of difficult adjustment of the air gap magnetic field of switching permanent magnet motors, and achieve low copper consumption, convenient manufacturing, and small axial size Effect

Inactive Publication Date: 2013-11-13
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: Aiming at the above-mentioned prior art, a double-stator disc-type hybrid excitation motor is proposed to solve the problem that the air-gap magnetic field of the disc-type flux switching permanent magnet motor is difficult to adjust

Method used

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  • Double-stator disc type mixed excitation motor
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  • Double-stator disc type mixed excitation motor

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Embodiment Construction

[0014] The present invention will be further explained below in conjunction with the accompanying drawings.

[0015] like figure 1 As shown, a dual-stator disc hybrid excitation motor includes a first stator 1 , a rotor 2 , and a second stator 3 installed coaxially, and the rotor 2 is located between the first stator 1 and the second stator 3 . An air gap 11 is formed between the rotor 2 and the first stator 1 , and an air gap 12 is formed between the rotor 2 and the second stator 3 . The first stator 1, the second stator 3 and the rotor 2 are all salient pole structures.

[0016] Wherein: the first stator 1 and the second stator 3 have the same structure and are arranged symmetrically with respect to the rotor 2 . The first stator 1 and the second stator 3 respectively include 12 U-shaped stator cores 5 , 12 permanent magnets 4 , 12 concentrated armature coils 6 and 12 concentrated excitation coils 7 . U-shaped stator cores 5 and permanent magnets 4 are placed alternately ...

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Abstract

The invention discloses a double-stator disc type mixed excitation motor which comprises two stators, a permanent magnet, a three-phase concentrated armature winding, a single-phase concentrated excitation winding and a rotor. The stators and the rotor are arranged coaxially, and the rotor is arranged between the two stators. The permanent magnet, the armature winding and the electric excitation winding are all located on the stators. The rotor is free of the permanent magnet or the windings and simple in structure. An air-gap magnetic field is formed by an electric excitation magnetic field generated by the electric excitation winding and a permanent magnetic field generated by the permanent magnet, and adjusting of the air-gap magnetic field is achieved by changing electric excitation current. The motor structurally reserves the characteristics of a disc type magnetic flux switching permanent magnetic motor of being compact, simple and suitable for high-speed operation, can achieve a mixed excitation function without increasing the motor size additionally and guarantees good torque output capacity and high power density. The motor is small in axial size and suitable for strict and thin type installing in places of a hub driving motor for electromobile and the like.

Description

technical field [0001] The invention relates to the field of hybrid excitation motors, in particular to a disc type hybrid excitation motor adopting a magnetic flux switching structure. Background technique [0002] Disc permanent magnet motors have the advantages of short axial length, high power density, high torque density and high efficiency. However, in traditional disc permanent magnet motors, since the permanent magnets are placed on the rotor, in order to overcome the centrifugal force during high-speed operation, it is necessary to install corresponding fixing devices on the rotor, which causes cooling difficulties, and at the same time, the high temperature rise may cause permanent magnets Irreversible demagnetization occurs, which limits the output of the motor and restricts the further improvement of the performance of the motor. [0003] The disc motor with magnetic flux switching structure places both permanent magnets and windings on the stator, and there is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/04H02K1/17H02K3/28
CPCY02T10/641Y02T10/64
Inventor 郝立林明耀徐妲林克曼
Owner SOUTHEAST UNIV
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