Cylinder type flux-reversal linear machine

A magnetic flux reversal and linear motor technology, which is applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of motor dynamic characteristics that affect the current control accuracy, large eddy current loss of solid iron core, and low efficiency of linear synchronous motors, etc., to achieve Improve the control accuracy of current and electromagnetic force, the effect of small secondary mass and simple structure
CN101552535BInactive Publication Date: 2011-06-01HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2011-06-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a cylinder type flux-reversal linear machine. The invention relates to the field of electric machine and settles the problems of low efficiency, large eddy current loss, complex technique and effect to control precision and dynamic characteristic in prior linear machine. The armature core of phase unit according to the invention is an annular core which is uniformly installed with 2n teeth on the inner circumstance, wherein n is a natural number. The armature winding of phase unit is a concentrated winding. Each coil is corresponding winded on each tooth of armature core of phase unit. The winding directions of coils on adjacent teeth are opposite. All coils on the teeth of armature core of same phase unit are connected in series to a same phase unit armature winding. The phase unit armature windings are connected in series or in parallel to each phase armature winding. A permanent magnet is adhibited on the teeth of armature core of phase unit. The phase unit armature core center distance taut between two adjacent phase armature units in axial direction and the tooth pitch taup of secondary teeth along the axial direction satisfy a relationship: taut=ktaup+ / -(1 / m)taup, wherein k and m are natural numbers, and m is a phase number and is larger than or equal to 3. The cylinder type flux-reversal linear machine not only can be used as a motor, but also can be used as a generator.
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Description

technical field

[0001] The invention relates to motor technology, in particular to a cylindrical magnetic flux reverse linear motor. Background technique

[0002] The structure of the existing cylindrical permanent magnet linear synchronous motor is as follows: Figure 10 shown. When the armature core is made of silicon steel sheets, since the direction of the laminations is axial, the direction of the armature magnetic field generated by the permanent magnet and the winding is partly in the same direction as the laminations, forming a large eddy current in the core, resulting in a larger Large eddy current loss, and the iron core lamination process is complicated, and the processing cost is high; if a solid iron core is used, although the process is simple and the cost is low, the iron core will generate greater eddy current loss, which greatly reduces the efficiency of the motor. At the same time, due to the magnetic coupling between phases, on the one hand, the existence...

Claims

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