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Flat plate type linear switch flux linkage motor and staggered tooth displacement selection method thereof

A switch flux linkage, flat-plate technology, applied in the direction of electrical components, electromechanical devices, electric components, etc., can solve the problems of reducing the positioning thrust, reducing the power density of the motor, reducing the amplitude of the motor's no-load back EMF, etc., to achieve thrust The effect of small pulsation, large amplitude and small cogging force

Active Publication Date: 2016-03-16
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Description
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Problems solved by technology

However, while the chute structure reduces the positioning thrust, it also reduces the no-load back EMF amplitude of the motor and reduces the power density of the motor.

Method used

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  • Flat plate type linear switch flux linkage motor and staggered tooth displacement selection method thereof
  • Flat plate type linear switch flux linkage motor and staggered tooth displacement selection method thereof
  • Flat plate type linear switch flux linkage motor and staggered tooth displacement selection method thereof

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Embodiment Construction

[0039] In order to illustrate the structural features and design principles of the present invention, a detailed description will be given below with reference to the accompanying drawings, taking a flat-plate type 12 / 14-pole linear switch flux linkage motor with staggered teeth as an example.

[0040] figure 1 It is a schematic cross-sectional view of a stator-staggered-tooth flat-plate type 12 / 14-pole linear switch flux-linkage motor according to an embodiment of the present invention. The motor is a primary permanent magnet modular motor, the windings and permanent magnets are on the mover, the motor is composed of E-shaped modules, each module is composed of two U-shaped teeth sandwiching a permanent magnet, and each module adopts centralized Two coils belonging to the same phase are connected in series to form the phase winding, and the modules are separated by magnetic barriers. The magnetization directions of adjacent permanent magnets are opposite. The stator is a sa...

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Abstract

The invention provides a flat plate type linear switch flux linkage motor and a tooth teeth displacement selection method thereof. The motor is divided into two sections of the same structure in the left part and the right part; the excitation directions of excitation sources in the same mover position in the two sections are opposite; the stator convex teeth of the two sections are spaced at a staggered tooth displacement from front to back; the staggered tooth displacement enabling the maximum counter potential fundamental current amplitude and the minimum ratio between second harmonics and fundamental current amplitude is taken as the staggered tooth displacement I; a staggered tooth displacement that is most close to the staggered tooth displacement I and enables the cogging force peak value to the minimum is taken as the staggered tooth displacement I; and the staggered tooth displacement of the motor is selected according to the comparison of the two staggered tooth displacements. According to the flat plate type linear switch flux linkage motor structure and the staggered tooth displacement selection method therefor, the staggered tooth displacement selection method is applicable to multiple kinds of flat plate type structural linear motors; and due to the staggered tooth displacement selection, high counter potential sine degree, large amplitude, low cogging force, and low thrust pulse can be realized for the motors of any excitation modes, any number of stator poles, and any number of mover poles.

Description

technical field [0001] The invention belongs to the technical field of linear motor manufacturing, and in particular relates to a flat-plate linear switch flux linkage motor and a method for selecting displacement of wrong teeth. Background technique [0002] In linear drive applications, compared with rotary motors, linear motors directly convert electrical energy into mechanical energy for linear motion without intermediate conversion links. The structure is simple, the dynamic response is fast, and the construction cost is low. [0003] In the selection of linear motors, linear induction motors were first used, but their efficiency and power factor are relatively low. Compared with linear induction motors, permanent magnet linear motors have significant advantages in terms of efficiency, power index, power factor, etc. The windings and permanent magnets of traditional linear permanent magnet synchronous motors are placed in the primary and secondary of the motor, respecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
Inventor 郝雯娟王宇邓智泉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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