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Method and apparatus for a superconducting direct current generator driven by a wind turbine

A technology for wind turbines and generators, which is applied in wind turbine components, control of wind turbines, combination of wind turbines, etc., and can solve problems such as low torque density and unreliable gearboxes

Active Publication Date: 2013-01-02
GENERAL ELECTRIC RENOVABLES ESPANA SL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional direct drive generators typically have low torque densities and are too heavy for wind turbine towers rated in excess of about 6MW
Gearboxes are unreliable and not suitable for the long life of wind turbine towers

Method used

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

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Embodiment Construction

[0062] Superconducting direct current (DC) generators have been developed with stationary (or non-rotating) field windings and rotating armatures driven directly by turbines such as wind turbines. The superconducting DC generator may be installed in the upper region of the wind turbine tower and coupled directly to rotating components of the wind turbine, such as blades. Direct drive generators are lightweight enough to be mounted on top of a conventional wind turbine tower and coupled to the rotating blades of a conventional wind turbine.

[0063] Superconducting DC generators provide high torque density, which allows the DC generator to be lightweight, despite the need for additional components to cool and insulate the superconducting coils in the field windings. The stationary field winding consists of a series of racetrack-shaped superconducting coils cooled to cryogenic temperatures. The rotating armature and iron yoke (optional) are directly connected to and rotated by ...

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PUM

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Abstract

The invention discloses a method and an apparatus for a superconducting direct current generator driven by a wind turbine, including an annular armature connectable to rotate with a rotating component of a wind turbine and a stationary annular field winding coaxial to the armature and separated by a gap from the armature. The field winding is configured to include superconducting coil magnets and a support structure connectable to an upper region of a tower of the wind turbine. The direct current generator further includes a commutator assembly configured to transfer DC current generated by the rotating armature to a power conversion system.

Description

technical field [0001] The present invention relates to generators, and more particularly to wind turbines and superconducting direct current (DC) generators. Background technique [0002] Direct drive generators driven by the blades of the wind turbine are highly efficient and have minimal losses due to the transfer of torque from the turbine blades to the DC generator. Direct-drive conventional generators on wind turbine towers typically have power ratings of 6 megawatts (MW) or less. [0003] Traditional direct drive generators typically have low torque densities and are too heavy for wind turbine towers rated above about 6 MW. Gearboxes are unreliable and unsuitable for long-life work on wind turbine towers. [0004] Furthermore, alternating current (AC) wind turbines must undergo total power conversion to convert the generated power into 50-60 cycles of AC at the specific voltage required by the grid connection. This conversion is typically done by a power electronic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K23/02H02K7/18H02K9/20
CPCH02K7/1838Y02B10/30H02K13/006F03D7/0248F03D9/002F03D11/028Y02E10/722H02K55/00Y02E10/725H02K23/12F05B2220/7066Y02E40/62F05B2220/7062F03D9/25F03D15/20H02K55/02Y02E10/72Y02E40/60
Inventor J.W.布雷
Owner GENERAL ELECTRIC RENOVABLES ESPANA SL
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