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Complementary modular hybrid excited linear motor

A hybrid excitation, linear motor technology

Inactive Publication Date: 2012-01-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic field of traditional flux switching permanent magnet linear motors is only provided by permanent magnets, so it is difficult to adjust the excitation and the speed range is limited

Method used

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  • Complementary modular hybrid excited linear motor
  • Complementary modular hybrid excited linear motor
  • Complementary modular hybrid excited linear motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, the complementary modular hybrid excitation linear motor provided by the present invention is composed of a stator 10 and a mover 11 with an air gap between them. As shown in the figure, both the stator 10 and the mover 11 adopt a salient pole structure. Wherein, there is neither permanent magnet nor winding on the stator 10, but only magnetically permeable material.

[0019] The mover 11 is composed of 2m E-shaped modules 110, and a non-magnetic material 111 is filled between two adjacent E-shaped modules. As shown in the figure, the relative displacement between two E-type modules in the same phase (such as A1 phase and A2 phase) is λ 1 =(n±1 / 2)τ s , the relative displacement between two out-of-phase E-type modules (such as phase A1 and phase B1 or phase B1 and phase C1) is λ 2 =(j±1 / m)τ s , τ s is the stator pole pitch, n and j are both positive integers. In this embodiment, m=3, that is, the motor has three phases A, B and C shown i...

Embodiment 2

[0028] like figure 2 As shown, the difference between the complementary modular hybrid excitation linear motor in this embodiment and that in Embodiment 1 lies in the two E-type Adjacent placement of modules. The displacement of the two E-type modules relative to the stator is also λ 1 =(n±1 / 2)τ s , forming a complementary symmetric structure. Phase B and Phase C have the same structure as Phase A. The displacement of the E-type module where the A, B, and C three-phase windings are located relative to the stator is λ 2 =(j±1 / m)τ s , where τ s is the stator pole pitch, n and j are both positive integers. Other structures and characteristics are the same as in Example 1.

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Abstract

The invention provides a complementary modular hybrid excited linear motor comprising a stator and a rotor. Both the stator and the rotor are in salient-pole structures, and an air gap is left between the stator and the rotor; the rotor comprises 2m E-type modules, wherein m is the number of the phases of a motor; the relative displacement Lambda 1 of two in-phase E-type modules is equal to (n+ / -1 / 2) Taus, and the relative displacement Lambda 2 of two out-phase E-type modules is equal to (j+ / -1 / m) Taus, wherein the Taus is the polar distance of the stator, and the n and the j are positive integers; each E-type module comprises two U-shaped magnetic teeth, a permanent magnet, an armature winding and an exciting winding, wherein the two U-shaped magnetic teeth are connected by a magnetic bridge, and the exciting winding is arranged and sleeved on the top of the U-shaped magnetic teeth. The magnetic bridge structure for the linear motor can supply the additional access for the exciting winding so that the reluctance of the circuit for the electrically exciting magnetic field can be reduced and the flux of the linkage for the armature winding can be greatly reduced by using smaller exciting current. The linear motor has strong magnetic field weakening capacity and high efficiency.

Description

technical field [0001] The invention relates to the technical field of motor manufacture, and in particular relates to a hybrid excitation linear motor with complementary modular winding and structure. Background technique [0002] The motor is the main part of the transmission system, and a reasonable selection of the motor can improve the performance and efficiency of the entire system. In linear applications, traditional rotary motors require certain mechanical transmission components to convert rotary motion into linear motion. This brings many problems, such as bulky system, increased weight, high noise, increased maintenance costs, and in rail transit applications, wheel-rail slippage will occur if the speed is too high. Therefore, the technical means of replacing the rotary motor with a linear motor can overcome the above-mentioned shortcomings of the rotary motor in this application and improve the efficiency of the entire system. [0003] With the development of p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/02
Inventor 程明曹瑞武花为
Owner SOUTHEAST UNIV
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