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Method and apparatus for a superconducting generator driven by wind turbine

A technology for generators and wind turbines, applied in the control of wind turbines, the usage of superconductor elements, mechanical equipment, etc., can solve the problems of unreliable gearboxes, long service life of wind turbine towers, etc.

Active Publication Date: 2008-08-20
GENERAL ELECTRIC RENOVABLES ESPANA SL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gearboxes tend to be unreliable and unsuitable for the long lifespans found in wind turbine tower use

Method used

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  • Method and apparatus for a superconducting generator driven by wind turbine
  • Method and apparatus for a superconducting generator driven by wind turbine
  • Method and apparatus for a superconducting generator driven by wind turbine

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Embodiment Construction

[0014] Superconducting alternating current (AC) generators have been developed to have a stationary (or fixed) field winding and a rotating armature directly driven by a wind turbine or turbine (collectively referred to as a "wind turbine"). A superconducting alternator may be mounted on the upper portion of the wind turbine tower and coupled directly to the rotating components of the wind turbine, such as the blades. Direct drive generators are light enough to be mounted on top of conventional wind turbine towers and coupled to conventional rotating wind turbine blades.

[0015] Superconducting generators offer a high torque density which allows the generator to be made lighter despite the added component cooling required and the need to isolate the superconductor coils from the field wind. The stationary field winding consists of a series of racetrack-shaped superconductor coils cooled to condensing temperatures. The rotating armature and iron yoke (optional) are directly c...

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Abstract

The invention provides a generator (22) including: an annular armature (24) connectable to rotate with blades (18) of a wind turbine (10); an annular stationary field winding assembly (26) coaxial with the armature and separated by a gap from an inside surface of the armature, wherein the field winding include superconducting coils (68), and support structure connectable to an upper region of a tower (12) of the wind turbine.

Description

technical field [0001] The present invention relates to electrical generators, and in particular to wind turbines and superconducting electrical generators. Background technique [0002] Direct drive generators driven by the blades of the wind turbine are highly efficient and minimize losses due to torque transmission from the turbine blades to the generator. Conventional generators that are directly driven on a wind turbine tower typically have a power of three (3) megawatts (MW) or less. [0003] Conventional direct drive generators typically have low torque densities and become too heavy for wind turbine towers rated above 3 MW. Heavy-duty generators with power ratings above 3 MW have been used in wind turbine towers with an indirect drive which typically includes a gearbox and a shaft for a compact high-speed generator. Gearboxes tend to be unreliable and unsuitable for the long lifespans in wind turbine tower use. [0004] There is a long-standing need for direct dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K55/00H10N60/00
CPCH02K55/02Y02B10/30H02K7/1838F03D7/0248F03D9/25F03D15/20Y02E10/72Y02E40/60
Inventor E·T·拉斯卡里斯K·西瓦苏布拉马尼亚姆
Owner GENERAL ELECTRIC RENOVABLES ESPANA SL
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