Direct-driven front and back wind wheel contra-rotating wind driven generator

A technology of whirling wind power generator and rear wind wheel, which can be applied to wind power generators, wind power generator combinations, wind power generators that are consistent with the wind direction, etc., and can solve the problems of low energy utilization efficiency and the like

Inactive Publication Date: 2010-09-01
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiency of low energy utilization efficiency of existing counter-rotating wind power gen

Method used

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  • Direct-driven front and back wind wheel contra-rotating wind driven generator
  • Direct-driven front and back wind wheel contra-rotating wind driven generator
  • Direct-driven front and back wind wheel contra-rotating wind driven generator

Examples

Experimental program
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Example Embodiment

[0014] Reference Figure 1~3 . The direct-drive front and rear wind wheel counter-rotating wind turbines include a first wind wheel 18, a second wind wheel 19, a front input shaft 1, a rear input shaft 10, an inner rotor 5, an outer rotor 7, a first bearing 2, and a second rotor. Two bearings 9 and rare earth permanent magnets 6, one end of the front input shaft 1 is fixedly connected to the first wind wheel 18, and the other end is connected to the coil winding to form the inner rotor 5. The first wind wheel 18 absorbs the incoming wind power to drive the generator front input shaft 1 Clockwise rotation; the front input shaft 1 is supported by the first bearing 2 fixed at the end of the front cover 4; the front input shaft 1 starts from the middle of the high-voltage slip ring 14 and the low-voltage slip ring 15 to its end is insulated by the first The bushing 3 is wrapped; the coil windings are wound on 28 concavo-convex structure silicon steel sheets 17 to form 28 coil wind...

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Abstract

The invention discloses a direct-driven front and back wind wheel contra-rotating wind driven generator and aims to solve the technical problem that the traditional contra-rotating wind driven generator has low energy utilization efficiency. The generator consists of two wind wheels, namely a front wind wheel and a back wind wheel, which are opposite in rotation direction, wherein the two wind wheels drive inner and outer rotors of the contra-rotating generator; and three airfoils with high lift drag ratio are arranged on the first and second wind wheels respectively. Wind power utilization factors are met and improved through reasonable power and flow match. The energy utilization efficiency of the generator is improved to 58 percent from 40 percent of the prior art.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a direct-drive type wind power generator with counter-rotating front and rear wind wheels. Background technique [0002] refer to Figure 4 . The document "Chinese Utility Model Patent No. ZL200720092269.2" discloses a counter-rotating wind power generator. The wind generator consists of a main shaft 21 , an inner rotor 5 , an outer rotor 7 , a first wind wheel 18 , a second wind wheel 19 and a casing 22 . The main shaft 21 is installed in the middle of the inner rotor 5, the inner rotor 5 is installed in the middle of the outer rotor 7 by two first bearings 2, the first wind wheel 18 is installed on the upper end of the main shaft 21; the outer rotor 7 is installed by two second bearings 9 Inside the casing 22 , the second wind wheel 19 is installed on the upper end of the outer rotor 7 . The wind generator adopts counter-rotating wind rotors, which can improve the energy conversion ...

Claims

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Application Information

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IPC IPC(8): F03D9/00F03D1/06H02K7/18H02K13/00F03D9/25F03D9/32
CPCY02E10/721Y02E10/72
Inventor 王掩刚赵龙波国睿
Owner NORTHWESTERN POLYTECHNICAL UNIV
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