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A pitch system for a wind turbine

A pitch system and wind turbine technology, applied in the control of wind turbines, wind turbines, wind turbine components, etc., can solve the problems of complexity, cost and downtime

Inactive Publication Date: 2013-07-24
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the complexity, cost and downtime associated with replacing the ring gear is significantly greater compared to arrangements where the ring gear is mounted externally so that the blades do not need to be removed

Method used

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  • A pitch system for a wind turbine
  • A pitch system for a wind turbine
  • A pitch system for a wind turbine

Examples

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Embodiment Construction

[0025] figure 1 An example of a wind turbine 2 is shown. Although an offshore wind turbine is shown, it should be noted that the following description is also applicable to other types of wind turbines. The wind turbine 2 comprises a rotor with blades 4 mounted to a hub 6 , which is supported 8 by a nacelle 8 on a tower 12 . The wind causes the rotor to rotate about the main axis. This rotational energy is delivered to an electrical power transmission system housed within the nacelle 8 where it is then converted into electrical energy.

[0026] The blades 4 are mounted to the hub 6 by means of corresponding blade bearings so that the blades 4 can be pitched into and out of the wind. Pitching changes the amount of lift generated by the wind and drives the rotor to rotate. Thus, a pitch system between the blades 4 and the hub 6 can be used to help control the wind turbine and optimize power production. Although pitch systems are known, the following description focuses on a...

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PUM

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Abstract

A pitch system (20) for rotating a blade (4) of a wind turbine relative to a hub (6) generally comprises a bearing (22) having an inner bearing ring (30) configured to be mounted to the hub and an outer bearing ring (32) configured to be mounted to the blade. A first coupling member (24) positioned between the hub and inner bearing ring extends radially inward. A second coupling member (26) positioned between the blade and outer bearing ring extends radially inward and over the inner bearing ring. A drive system (28) includes a first drive member (34) coupled to the first coupling member and a first driven member (36) coupled to the second coupling member. The first drive member is configured to move the first driven member to rotate the outer bearing ring relative to the inner bearing ring and thereby pitch the blade.

Description

[0001] cross reference [0002] This application claims the benefit of U.S. Provisional Patent Application No. 61 / 417,335 and Danish Patent Application PA201070510, both filed on November 26, 2010 and entitled "Wind Turbines and Blades for Pitched Wind Turbines" Method (A WIND TURBINE AND A METHOD FOR PITCHING A BLADE OF A WIND TURBINE)". This application also claims the benefit of U.S. Provisional Patent Application No. 61 / 420,940 and U.K. Patent Application No. 1020828.8, both filed December 8, 2010 and subject titled "Installation for Pitch Gears" Device (MOUNTING ARRANGEMENT FOR PITCH GEAR)". The contents of all of these cross-referenced applications are hereby incorporated by reference in their entirety. technical field [0003] The invention relates to a pitch system for rotating blades of a wind turbine relative to a hub and a wind turbine incorporating the pitch system. Background technique [0004] Wind turbines typically include a rotor with large blades driven ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02F03D11/00F03D1/06
CPCF03D1/0658Y02E10/721F03D11/0008Y02E10/722Y02E10/723F03D1/0691F03D7/0224F03D80/70F05B2260/79Y02E10/72
Inventor J·L·纽鲍尔O·默尔加德·杰普森R·朗特里L·克里斯托弗森P·伯切尔G·麦登
Owner VESTAS WIND SYST AS