A Flat Type Transverse Flux Linear Motor

Abstract

The invention discloses a flat plate-shaped transverse magnetic flux linear motor. The flat plate-shaped transverse magnetic flux linear motor comprises a primary core (1), a secondary core (2), an armature winding (3) and a permanent magnet pole (4), wherein the armature winding (3) is wound on core teeth of the primary core (1) to form a motor primary, the permanent magnet pole (4) is laid on the secondary core (2) to form a motor secondary, and the primary core (1) comprises a primary flat plate-shaped core yoke (101), three columns of core teeth, including the two columns of outer core teeth (102) and the column of middle core teeth (103), and pole shoes of end portions of the core teeth, including the pole shoes (104) at the end portions of the outer core teeth (102) and the pole shoes (105) at the end portions of the middle core teeth (103). The novel motor is advantaged in that the magnetic flux plane is mutually perpendicular to the motion direction, a problem that mutual spatial restrictions of an electric load and a magnetic load are not conducive to increase thrust density of the motor is solved, relatively high power density can be realized, magnetomotive force is relatively large, improvement of motor output is facilitated, and relatively large thrust density is acquired.

Description

technical field [0001] The invention belongs to the field of motors, and in particular relates to a flat-plate transverse magnetic flux linear motor. Background technique [0002] Linear motion systems are widely used in national defense, military industry and other fields. With the development of science and technology, people have put forward higher and higher requirements for linear motion systems, including high thrust density, flexible control characteristics, simple structure, and easy manufacturing. However, for linear motors with traditional magnetic circuit structure, the mutual restriction of electric load and magnetic load makes it difficult to fundamentally improve the force density of linear motors. In terms of high torque density motors, transverse magnetic field motors have developed rapidly in recent years. [0003] At present, there are few domestic studies on transverse flux permanent magnet linear motors. Professor Zou Jibin of Harbin Institute of Techno...

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Problems solved by technology

[0003] At present, there are few domestic studies on transverse flux permanent magnet linear motors. Professor Zou Jibin of Harbin Institute of Technology and his students have studied transverse flux cylindrical linear motors with a U-shaped core structure. The motor structure is simple, but the adjacent two-phase windings There is a common slot edge between them, and there is a coupling problem of each phase winding. In addition, because the adjacent primary core tooth units are twice the permanent magnet pole pitch, the utilization rate of the permanent magnet poles is not high and the magnetic flux leakage is serious (Zou Jibin, Wang Qian, Zhang Hongliang. Transverse Magnetic Analysis and Calculation of Electromagnetic Force of Linear Motor[J]. Chinese Journal of Electrotechnical Society, 2007, 22(8))

Professor Kou Baoquan of Harbin Institute of Technology and his students have studied two-way cross-link flat and cylindrical transverse flux linear permanent magnet synchronous motors. The tooth pitch of the primary iron core unit of the motor is equal to the pole pitch, which can make full use of the secondary permanent magnets. Effectively reduce the magnetic flux leakage between poles, but the structure of the motor is complex and adjacent windings share a core tooth, and there is a coupling problem between different windings, so it is difficult to realize a multi-phase structure (Kou Baoquan, Yang Guolong, Zhou Weizheng, Zhang He. Two-way interlinked transverse magnetic Through-plate permanent magnet linear synchronous motor[J]. Chinese Journal of Electrical Engineering, 2012, 33:75-81+178. Kou Baoquan, Yang Guolong, Li Peng, Zhang He. Two-way cross-linking transverse flux cylindrical linear permanent magnet synchronous motor Basic research on [J]. Chinese Journal of Electrical Engineering, 2012,36:61-67+13.)

[0004] In short, the existing transverse flux linear motors with traditional U-shaped, C-shaped and other iron core structures have low primary space utilization, low utilization of permanent magnets, and large magnetic flux leakage between permanent magnets.

In addition, most of them still have problems such as complex structure, difficult processing, or low ratio of effective length of motor armature winding, and there is still room for improvement in power density and manufacturing.

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