A Segmented Cylindrical Transverse Flux Linear Motor

Abstract

The invention discloses a sectional cylinder type transverse magnetic flux linear motor. The linear motor comprises phase sectional primary iron cores (1,2,3), phase sectional secondary iron cores (4,5,6), phase armature windings (7,8,9) and a permanent magnet pole (10), wherein the phase armature windings (7,8,9) are respectively wound on iron core teeth of the phase sectional primary iron cores(1,2,3) to form a motor primary, and the permanent magnet pole (10) is laid on the phase sectional secondary iron cores (4,5,6) to form a motor secondary. The linear motor is characterized in that themotor primary and the motor secondary both employ the phased sectional structure, the phase sectional primary iron cores (1,2,3) and the phase sectional secondary iron cores (4,5,6) are in a fan-shaped column structure and are uniformly distributed on periphery of the motor according to the phase number m, the radian of a central angle of each phase is 2pi / m, and magnetic separator materials (1)are filled among the phase sections. The novel motor is advantaged in that relatively large magnetomotive force is realized, motor output is enhanced, and relatively high thrust density is acquired.

Description

technical field [0001] The invention belongs to the field of motors, and in particular relates to a segmented cylindrical 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 Institut...

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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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