Grid-connected hybrid-driven variable-pitch variable-speed constant-frequency wind turbine generator set

A wind turbine, variable speed and constant frequency technology, applied in wind turbine combination, wind turbine, wind turbine control, etc., can solve the problems of direct-drive motor with many stages, difficult installation and transportation, and high failure rate of gearboxes , to achieve the effect of improving system reliability and wind energy utilization, low maintenance cost, and small mechanical transmission loss

Inactive Publication Date: 2010-03-03
HARBIN HAFEI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two types of grid-connected wind turbines in my country: one is the direct drive type; the other is the double-fed type. The direct drive type has better maintainability, but the direct drive type motor Large number and high qualit

Method used

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  • Grid-connected hybrid-driven variable-pitch variable-speed constant-frequency wind turbine generator set
  • Grid-connected hybrid-driven variable-pitch variable-speed constant-frequency wind turbine generator set
  • Grid-connected hybrid-driven variable-pitch variable-speed constant-frequency wind turbine generator set

Examples

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Embodiment 1

[0018] Example 1: Combining Figure 1-Figure 4 , the grid-connected hybrid drive variable-pitch variable-speed constant-frequency wind power generating set of the present invention is composed of an impeller system, a transmission system, a support system, a yaw system, a hydraulic system, a temperature control system and an electrical system, and the impeller system is directly connected with the The gear box planetary frame of the transmission system is flange-connected, the impeller system includes three blades, the hub and the pitch control unit, the generator stator shell of the transmission system and the inner ring gear shell of the gear box are respectively the front flange and the rear flange The generator is a synchronous permanent magnet generator, and the generator is an inner rotor structure. The front shaft of the inner rotor is connected with the output shaft of the gearbox with an external spline, and the brake disc is installed on the rear shaft extension. , t...

Embodiment 2

[0025] Example 2: Combining Figure 1-Figure 4, the grid-connected hybrid drive variable-pitch variable-speed constant-frequency wind power generating set of the present invention, the hub (4) in the impeller system is directly connected with the flange of the planet carrier (30) of the transmission system, and in the impeller system The outer ring of the pitch bearing (3) is fixedly connected to the hub (4), the inner ring of the bearing is connected to the blade (5), the pitch reducer (6) is connected to the hub (4), and its output gear is connected to the pitch bearing (3) The internal teeth of the inner ring mesh, and the pitch motor (2) drives the gear of the pitch reducer to rotate the blade (5). The pitch control unit (1) is installed inside the hub (4). The generator stator housing (12) of the transmission system and the gear box inner ring gear housing (7) of the gear box are respectively fixed on the slewing bracket of the support system in the form of a front flang...

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Abstract

The invention provides a grid-connected hybrid-driven variable-pitch variable-speed constant-frequency wind turbine generator set which is developed against two popular types of direct-driven type anddouble-feed type in China presently. The grid-connected hybrid-driven variable-pitch variable-speed constant-frequency wind turbine generator set consists of an impeller system, a transmission system, a support system, a yaw system, a hydraulic system, a temperature control system and an electrical system, wherein the impeller system is directly connected with a flange of a planet carrier of a speed increasing box of the transmission system, and comprises three blades, a wheel hub and a variable-pitch control unit, a casing of a stator of a generator of the transmission system and a casing ofan inner gear ring of the speed increasing box are respectively fixed on a rotary support of a support system by the way of a front flange and a back flange, and the generator is a synchronous permanent magnet generator. The grid-connected hybrid-driven variable-pitch variable-speed constant-frequency wind turbine generator set adopts a primary planetary gearbox and the low-speed permanent magnetsynchronous generator, thereby having the advantages of small volume, simple structure, fewer maintenance items of the set, low maintenance cost, no need of special hoisting equipment, sufficient space for meeting the requirements of maintenance and ergonomics, and optimal maintainability of all the parts.

Description

(1) Technical field [0001] The invention relates to wind power generation technology, in particular to a grid-connected hybrid drive variable-pitch variable-speed constant-frequency wind power generating set. (2) Background technology [0002] Wind energy is one of the earliest energy sources used by humans. As far back as 2000 BC, sailing ships and wind mills appeared in Egypt, Persia and other countries. In the Middle Ages, the Netherlands and the United States had horizontal-axis windmills for irrigation and drainage. my country is one of the first countries in the world to utilize wind energy. As early as 1800 years ago, there was a record of wind power lifting water in my country. In 1890, P. Lacourt of Denmark successfully developed a wind turbine. In 1908, Denmark had built hundreds of small wind power stations. From the beginning of the 20th century to the end of the 1960s, the development of wind energy resources in some countries was still in the stage of small-sc...

Claims

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Application Information

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IPC IPC(8): F03D9/00F03D1/00F03D7/04F03D9/25
CPCY02E10/723Y02E10/72
Inventor 高亚春刘玉新王勇王晓辉许社忠丁常宝董乾哲林志强
Owner HARBIN HAFEI IND
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