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Directly driven synchronous dragger with Nd-Fe-B permanent magnetic rotor

An outer rotor and NdFeB technology, which is applied in the field of NdFeB permanent magnet outer rotor synchronous traction machines, modern elevator traction special driving devices, and outer rotor synchronous traction machines, can solve the problem of difficult stator core pressing and unloading. Lines, uneven rotor air gaps, poor structural manufacturability, etc., to achieve the effects of accurate leveling, compact structure, and reduced positioning torque

Inactive Publication Date: 2004-03-10
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the traction machine has the following defects: when the traction wheel is loaded, the outer rotor is eccentric, which will cause the air gap between the stator and the rotor to be uneven, and even cause the motor to stall in severe cases
This three-layer annular stator structure not only has a large amount of cutting, but also is difficult to press-fit and roll off the stator core, and the structure is poor in manufacturability
In addition, it is equipped with braking components only on one side, and the reliability of braking is poor

Method used

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  • Directly driven synchronous dragger with Nd-Fe-B permanent magnetic rotor
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  • Directly driven synchronous dragger with Nd-Fe-B permanent magnetic rotor

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Embodiment Construction

[0014] In order to better understand the technical solution of the present invention, further detailed description will be given below in conjunction with the accompanying drawings.

[0015] figure 1 It is a structural schematic diagram of the present invention.

[0016] As shown in the figure, the present invention adopts a multi-pole outer rotor structure. The yoke 2 of the outer rotor 1 not only serves as a support for the salient pole magnetic steel 3 to form the magnetic circuit of the motor, but also serves as a fixed support for the traction sheave 4. The outer rotor 1 is It can also be directly used as a brake wheel when power-off braking. The inner stator adopts a two-layer ring structure, which is composed of a stator inner ring 5 , a stator core 7 , an armature winding 6 and a stator outer ring 9 . The traction sheave 4 is fixed on the outer rotor 1 and is integrally connected with the outer rotor. Stator and rotor are supported by bearings 8 to ensure clearance ...

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Abstract

In this invention multipole outer rotor structure is used, said out rotor is also used as brake wheel, drag wheel is fit on outer rotor. The special design makes the structure be very compact and can realize direct driving without gear wheel. The special two-layer ring-type stator structure can not only increase working reliability but also improve mfg. process, remarkably. The invention has advantages of lifting steady and flat-layer exact, and two set of brake component is used so as to realize braking and stopping with high reliability.

Description

Technical field: [0001] The invention relates to an outer rotor synchronous traction machine, in particular to a magnetic field oriented control and direct drive NdFeB permanent magnet outer rotor synchronous traction machine, which is a special driving device for modern elevator traction and belongs to the motor of the Ministry of Electricity technology field. Background technique: [0002] With the development of urban construction, more and more high-rise buildings are rising, and the requirements for modern elevators are getting higher and higher. The elevator traction machine is required to be small in size and light in weight, so as to reduce the area of ​​the machine room, or even eliminate the need for a machine room. In the prior art, the elevator traction machine generally adopts a conventional asynchronous traction machine with stator voltage regulation and speed regulation, or a VVVF power supply frequency conversion speed regulation asynchronous motor, and a gea...

Claims

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Application Information

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IPC IPC(8): H02K7/10H02K7/14H02K11/21H02K21/22
Inventor 谭茀娃金如麟朱昌明曾晓东董隆予
Owner SHANGHAI JIAO TONG UNIV
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