Concentric double-stator structured direct-drive cage type induction generator system

A technology of wind power generators and generators, applied in wind power generation, electromechanical devices, electrical components, etc., can solve the problems of large motor space, large rotor size, and no use, etc., to achieve increased power generation, maintenance-free, and low cost Effect

Inactive Publication Date: 2011-07-13
SINOPAL (QINGDAO) ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the direct drive wind turbine is directly connected to the wind turbine, its speed is low, the number of poles is large, the size of the stator and rotor is large, and it has a flat structure, and the large space inside the motor is not used.

Method used

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  • Concentric double-stator structured direct-drive cage type induction generator system
  • Concentric double-stator structured direct-drive cage type induction generator system
  • Concentric double-stator structured direct-drive cage type induction generator system

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Embodiment Construction

[0012] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0013] With the development of power electronics technology and control theory, power electronic converters are used to replace traditional capacitors to provide excitation, which breaks through the bottleneck of capacitor excitation adjustment difficulties, making cage-type asynchronous wind turbines more widely used in wind power systems . Such as figure 2 , image 3 As shown, the concentric dual-stator structure direct drive generator 2 can be regarded as two concentric motors: one is an inner rotor generator, which is composed of an outer stator 25 and an inner rotor 26; the other is an outer rotor generator, Composed of outer rotor 27 and inner stator 28; winding 25-1 is wound on outer stator 25, winding 28-1 is wound on inner stator 28; squirrel cage guide bar 27-1 is inserted into the core of outer rotor 27, and squirrel cage gui...

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Abstract

The invention relates to a concentric double-stator structured direct-drive cage type induction generator system, wherein the generator is a cage type induction generator, which is combined by an inner rotor generator and an outer rotor generator which are concentric, wherein the inner rotor generator is characterized in that an outer stator is matched with an inner rotor; the outer rotor generator is characterized in that an outer rotor is matched with an inner stator; coils are wound on inner and outer stators; mouse cage bars are inserted into the iron cores of the inner and outer rotors; the inner and outer rotors are fixed on a support frame and are connected with an impeller rotating shaft of a wind turbine to realize rotation; and the outer and inner stators are fixed on a shell and a fixed shaft. The concentric double-stator structured direct-drive cage type induction generator system has simple structure, low cost, small size and is durable and free of maintenance. The generator efficiency is high, the machine set can switch into low-speed running state when the air speed is low so as to improve the generated energy of the machine set.

Description

technical field [0001] The invention relates to the field of wind power generators, in particular to a direct-drive wind power generator with a concentric double-stator structure. Background technique [0002] In recent years, wind energy has been widely used as a clean energy source, and one of the effective utilization methods is wind power generation. The innovation of wind power technology in the world is very fast, and the installed capacity is getting larger and larger. The direct drive technology without gearbox is a major trend of wind power technology in the future. In direct-drive wind power generation devices, permanent magnet synchronous generators and electric excitation synchronous wind generators are mostly used; among them, permanent magnet materials need to be installed on the rotor of permanent magnet synchronous generators, and permanent magnet materials are used in environments such as short circuit, high temperature and strong vibration. The loss of mag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K16/00H02J3/38
CPCY02E10/763Y02E10/725Y02E10/72Y02E10/76
Inventor ZHOU HUIJUNHUANG SENLINWANG CHENGZHU HONGYANWANG YUFENGGUO JINGJINGCHI KEZHONGYANG KANGUO QIANGAN KANGPINGCHEN HENGFENG
Owner SINOPAL (QINGDAO) ELECTRIC CO LTD
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