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Three-phase mixed excitation magnetic flux switching motor structure

A magnetic flux switching motor, hybrid excitation technology, applied in the shape/style/structure of the magnetic circuit, the static parts of the magnetic circuit, the rotating parts of the magnetic circuit, etc. Achieve the effect of increasing power density, improving degaussing problems, and improving overall performance

Inactive Publication Date: 2016-07-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a three-phase hybrid excitation flux switching motor structure to solve the problems of the existing flux switching motors that the air gap magnetic field cannot be adjusted and the permanent magnets are demagnetized

Method used

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  • Three-phase mixed excitation magnetic flux switching motor structure
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  • Three-phase mixed excitation magnetic flux switching motor structure

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Such as figure 1 Shown is a three-phase hybrid excitation flux switching motor structure, including rotor 1, stator 5, permanent magnet 2, DC field winding 3, three-phase armature winding 4, both stator 5 and rotor 1 have a salient pole slot structure , the stator 5 includes a number of stator poles 51, and between adjacent stator poles 51 is a stator slot 52, and each stator slot 52 is provided with two sets of windings, which are respectively used as an armature for one phase of the ABC three-phase windings and DC field windings; three-phase armature windings 4 and DC field windings 3 are concentrated windings; the permanent magnets 2 are several, respectively arranged at the opening of each stator slot 52, and a stator pole 51 on both sides The permanent magnets 2 are the same polarity, N pole or S pole. Such as figure 1 , the rotor has 10 teeth, the stato...

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Abstract

The invention discloses a three-phase mixed excitation magnetic flux switching motor structure which comprises a rotor, a stator, permanent magnets, a DC excitation winding and a three-phase armature winding. The stator and the rotor respectively have a salient pole gullet structure. The stator comprises a plurality of stator poles. A stator gullet is arranged between two adjacent stator poles. Each stator gullet is internally provided with two windings, namely a three-phase armature winding and a DC excitation winding. The three-phase armature winding and the DC excitation winding are centralized windings. A plurality of permanent magnets exist and are respectively arranged at the opening of each stator gullet. Furthermore the permanent magnets at two sides of one stator pole have same polarity. The three-phase mixed excitation magnetic flux switching motor structure has advantages of novel structure, reliable performance and simple control. After the permanents are added, not only can motor torque output improvement and motor copper loss reduction be realized, but also a demagnetization problem of the permanent magnets is prevented because of a placement position relationship. The three-phase mixed excitation magnetic flux switching motor structure further has advantages of improving reliability and utilization rate of the permanent magnets and greatly improving electromagnetic compatibility of the motor.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a three-phase mixed excitation magnetic flux switching motor structure with novel and firm structure, reliable operation and high performance. Background technique [0002] The motor is an essential power component in an industrialized society. The traditional permanent magnet motor has relatively high efficiency and power density due to the effect of the permanent magnet, but the demagnetization problem of the permanent magnet also limits its further development. Double salient pole motor is a new type of special motor developed in recent years. Its stator and rotor are salient pole cogging structures. The stator and armature windings are concentrated windings. There is no winding on the rotor. High speed operation and harsh working environment. In addition, the doubly salient motor does not need the participation of the power converter in the power generation state,...

Claims

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Application Information

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IPC IPC(8): H02K1/14H02K1/16H02K1/17H02K1/24
CPCH02K1/14H02K1/16H02K1/17H02K1/24
Inventor 侯丽钢孟小利周倩云杜幼芝丁立伟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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