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Speed change method of gear box and electromagnetic gear box

A gear box and electromagnetic technology, which is applied in the field of gear box speed change and electromagnetic gear box, can solve the problems of being unable to apply to wind turbines, and achieve the effects of saving manpower and material resources, low equipment failure rate, and low energy consumption

Inactive Publication Date: 2011-08-17
GUODIAN UNITED POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It provides a way of thinking for the application of electromagnetic gearbox, but its rotating stator needs to be connected with the internal combustion engine, so it cannot be applied to wind turbines

Method used

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  • Speed change method of gear box and electromagnetic gear box
  • Speed change method of gear box and electromagnetic gear box
  • Speed change method of gear box and electromagnetic gear box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An electromagnetic gearbox includes a casing 1, a stator and a rotor 4, wherein the stator 4 is in a "T" shape, fixedly installed on the casing 1, and a stator winding is wound on the stator 1. The rotor consists of a first rotor 2 and a second rotor 3. The first rotor 2 is located on one side of the "T" shape of the stator 4 and is connected to the input shaft 5. In the wind turbine connected to the input shaft 5 (shown in the figure) driven by rotation. The second rotor 3 is arranged on the other side of the stator 4 opposite to the first rotor, that is, the angle between the first rotor and the second rotor is 180 degrees. The second rotor 3 is connected with the output shaft 6, and the other end of the output shaft 6 can be connected with the generator set. The first rotor 2 and the second rotor 3 are respectively equipped with permanent magnets with different numbers of pole pairs. When in use, the first rotor 2 rotates under the drive of the wind power generator...

Embodiment 2

[0025] The structure is basically the same as that in Embodiment 1, except that the stator 4 is in the shape of a "U" or "Ω"; the first rotor 2 is arranged inside the stator 4, and the second rotor 3 is in the shape of a "U" Or "π" type, set outside the stator 4. Of course, it is also possible that the second rotor is arranged inside, while the first rotor is in a "U"-like or "π"-like shape and is arranged outside the stator.

Embodiment 3

[0027] A speed change method for a gearbox, wherein the gearbox is mainly composed of a first rotor 2 connected to an input shaft 5, a second rotor 3 connected to an output shaft 6, and a stator 4 provided with stator windings, through which the first rotor 2 The permanent magnets with different pole pairs on the second rotor 3 cooperate with the stator winding to realize the speed change of the gearbox.

[0028] Wherein, the first rotor 2 is driven by the wind power generating set to rotate at n1, and the stator winding on the stator 4 is excited by the first rotor 2 to generate an excitation current, which drives the second rotor 3 to rotate at n2.

[0029] The speed-up ratio of the gearbox is K=n2 / n1=P1 / P2, where P1 is the number of magnetic pole pairs of the first rotor 2 , and P2 is the number of magnetic pole pairs of the second rotor 3 .

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Abstract

The invention relates to a speed change method of a gear box, comprising a first rotor connected to an input shaft, a second rotor connected to an output shaft and a stator equipped with a stator winding, wherein speed is changed by matching permanent magnets having different magnetic pole pairs on the first rotor and the second rotor with the stator winding. The invention further relates to an electromagnetic gear box, comprising a shell, a stator and a rotor, wherein the stator is fixedly arranged on the shell; a stator winding is wound on the stator; the rotor is composed of a first rotor connected to an input shaft and a second rotor connected to an output shaft; the input shaft is connected to a wind driven generator; and the first rotor and the second rotor are respectively equipped with a permanent magnet with different magnetic pole pairs. The speed change method of a gear box and the electromagnetic gear box provided by the invention have the advantages that the weight of the device is light, the working efficiency is high, the loss is small, the service life is long, and the method and the box are suitable for popularization and application.

Description

technical field [0001] The invention relates to a speed changing method of a gear box and an electromagnetic gear box manufactured according to the speed changing method. Background technique [0002] The gearbox is widely used in motors, and it is often used in wind turbines, and it is an important mechanical component. Its main function is to transmit the power generated by the wind wheel under the action of wind to the generator and make it Get the corresponding speed. Usually, the speed of the wind wheel is very low, which is far below the speed required by the generator for power generation. It must be realized through the speed-up effect of the gear pair of the gearbox, so the gearbox is also called a speed-up box. [0003] At present, most wind turbines use mechanical gearboxes. However, the service life of wind turbines is generally 20 years, and the environment in which they are located is harsh. Currently, due to frequent rotation and friction, oil leakage or oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K51/00B60K6/543
Inventor 刘卫
Owner GUODIAN UNITED POWER TECH