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Three-degree-of-freedom magnetic suspension switch reluctance motor

A switched reluctance motor and magnetic levitation technology, which is applied to electrical components, electromechanical devices, electric components, etc., can solve the problems of increasing the axial length of the suspension motor system, reducing the critical speed and power density, and achieving simple structure and interphase coupling. Small, high utilization effect

Active Publication Date: 2014-01-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

Axial magnetic bearings will inevitably increase the axial length of the levitation motor system, thereby reducing the critical speed and power density

Method used

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  • Three-degree-of-freedom magnetic suspension switch reluctance motor
  • Three-degree-of-freedom magnetic suspension switch reluctance motor
  • Three-degree-of-freedom magnetic suspension switch reluctance motor

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0020] Such as figure 1 Shown: the three-dimensional structure schematic diagram of the three-phase 12 / 8 pole 3 degrees of freedom magnetic levitation switched reluctance motor of the present invention, including radial field motor stator 1, salient pole rotor 2, cylindrical rotor 3, radial field motor winding 4, magnetic bearing Stator 5 and magnetic bearing winding 6. The radial field motor (that is, bearingless switched reluctance motor) stator and the two axial magnetic bearing stators are salient pole structures, in which the number of teeth of the motor stator is 12, and the number of teeth of the magnetic bearing stator is an even number. The motor stator and the magnetic bearing stator There is a winding on each tooth, and the winding form is a concentrated winding; the rotor is formed by axially laminating a salient pole rotor and two cylindrical rotors, and...

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Abstract

The invention relates to a three-degree-of-freedom magnetic suspension switch reluctance motor, and belongs to the field of magnetic suspension switch reluctance motors and magnetic suspension bearings. A motor stator is composed of a radial magnetic filed motor stator body and two magnetic bearing stator bodies. The radial magnetic filed motor stator body and the two magnetic bearing stator bodies are of a salient pole structure, a motor winding winds each stator tooth of the radial magnetic filed motor stator body, and a magnetic bearing winding winds each stator tooth of each magnetic bearing stator body. A rotor is composed of a salient pole rotor body and two cylindrical rotor bodies in an axial superposition mode, the salient pole rotor body is located between the two cylindrical rotor bodies and is used for generating torque, and the cylindrical rotor bodies are used for generating radial and axial suspension force. The three-degree-of-freedom magnetic suspension switch reluctance motor integrates a bearingless switch reluctance motor and an axial magnetic suspension bearing, and is high in integrity. Only one set of windings is arranged on the radial magnetic bearing stator teeth, the stator bodies are of the salient pole structure, and therefore a plurality of structure modes can be selected. The minimum inductance area is used for suspension control, suspension current has little influence on torque current, and the inter-phase coupling effect is little.

Description

technical field [0001] The invention relates to a three-degree-of-freedom magnetic suspension switched reluctance motor, which belongs to the field of magnetic suspension switched reluctance motors and magnetic suspension bearings. Background technique [0002] The bearingless switched reluctance motor is a new type of magnetic levitation motor developed at the end of the 20th century. According to the number of windings on the stator, there are single-winding bearingless switched reluctance motors and double-winding bearingless switched reluctance motors. The control strategies of the two are different, but the mechanism of the levitation force and torque generation is the same. They both control the winding current to form an asymmetrical magnetic flux, and then generate a radial direction and size controllable. Suspension force, so that the motor has the ability to rotate and self-suspend. Compared with the double-winding bearingless switched reluctance motor, the singl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/00H02K7/09
Inventor 刘泽远邓智泉曹鑫杨燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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