High-thrust double three-phase permanent magnet linear synchronous motor for non-rope elevator hoisting system

A dual three-phase permanent magnet, linear synchronous technology, used in propulsion systems, electric components, elevators in buildings, etc., can solve problems such as limiting the application of multi-phase motors, and achieve good fault tolerance, low thrust loss, and processing. handy effect

Inactive Publication Date: 2018-11-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many studies on five-phase motors, but in the practical application of five-phase permanent magnet synchronous linear motors, it must be equipped with an inverter corresponding to the number of phases of the armature windings. Motor application

Method used

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  • High-thrust double three-phase permanent magnet linear synchronous motor for non-rope elevator hoisting system
  • High-thrust double three-phase permanent magnet linear synchronous motor for non-rope elevator hoisting system
  • High-thrust double three-phase permanent magnet linear synchronous motor for non-rope elevator hoisting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 As shown, the high-thrust dual-three-phase permanent magnet linear synchronous motor used in the hoisting system of a cordless elevator in this embodiment includes a primary 1 and a secondary 2, and the primary 1 includes an armature 11 and mounting bolts 12, wherein the armature 11 includes two sets The armature windings 111-112 and the armature core 113, the secondary 2 includes the magnetic pole 21 and the back iron 22, the magnetic pole 21 is composed of permanent magnets with two magnetization methods, one is perpendicular to the direction of motion of the motor, and the other is Horizontal to the moving direction of the motor, the armature 11 is fixed on the wall of the elevator shaft, the back iron 22 is rigidly connected to the elevator car, and the primary 1 and secondary 2 maintain a certain air gap 3.

[0031] In this embodiment, two sets of the same windings 112 and 113 are used. The two sets of windings are embedded in the armature slots in th...

Embodiment 2

[0036] figure 2 A deformation structure of the motor of the present invention is shown. The difference from Embodiment 1 is that the relative positions of the permanent magnet and the armature are different. In this implementation structure, the central axis of the permanent magnet and the axis of the first set of winding A align.

Embodiment 3

[0038] like image 3 As shown, the characteristic of this embodiment is that the two sets of windings 112 and 113 placed in the armature slots have an electrical angle difference of 15°, and the electromotive force of the slots is shown in Figure 6(b).

[0039] The working principle of the high-thrust double-three-phase permanent magnet linear synchronous motor used in the hoisting system of the cordless elevator in this embodiment is the same as that of the first embodiment. With the change of the secondary position, the flux linkage in the two sets of armature windings is positive and negative alternately. , but there is a 15° electrical angle difference between each other, which is basically sinusoidal and bipolar flux linkage.

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Abstract

The invention discloses a high-thrust double three-phase permanent magnet linear synchronous motor for a non-rope elevator hoisting system. The high-thrust double three-phase permanent magnet linear synchronous motor comprises a short secondary and a long primary; the long primary adopts a segmented structure, and each primary segment comprises an armature core and two armature windings arranged on armature teeth in a sleeving mode, wherein the two armature windings have a certain electrical angle difference in space, are mutually independent in a circuit and are sequentially switched during segment switching, and the switching point is the middle point of the primary segment; the long primary is installed on the wall of an elevator shaft, and a certain distance exists between every two adjacent segments; and the short secondary comprises back irons and magnetic poles, the magnetic poles adopt a Halbach structure and are in rigid connection with a car through the back ions, the short secondary adopts a segmented structure, and the segments are continuously installed. According to the motor, not only is the advantage of the good error tolerance performance of a multi-phase motor combined, but also a ubiquitous three-phase inverter power supply can be directly used for supplying power, and the application occasions and the development prospect f the multi-phase motor are widened.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet synchronous motors, in particular to a high-thrust double-three-phase permanent magnet linear synchronous motor used in a hoisting system of a cordless elevator. Background technique [0002] With the continuous development of social science and technology, CNC machine tools, semiconductor processing, vertical lifting conveying systems, electromagnetic ejection and other fields have higher and higher requirements for motor performance. Traditional motors can no longer meet more stringent standards, and will also face more severe problems. market demand. Compared with other traditional motors, permanent magnet linear synchronous motors have their own unique advantages. They have the performance of both permanent magnet motors and linear motors. The secondary of permanent magnet linear synchronous motors can be integrated with the transmission part, eliminating the need for intermediate Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03B66B11/04
Inventor 卢琴芬蒋钱
Owner ZHEJIANG UNIV
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