HVDC CONNECTION OF WIND TURBINE
First Claim
1. A method for high voltage direct current (HVDC) connection of wind turbines for power transmission independently of an AC grid, comprising:
- providing a wind driven generator configured to produce a variable frequency AC voltage output;
increasing the voltage level sufficiently to provide power to a HVDC transmission line;
converting the voltage to DC; and
,applying the voltage to a HVDC transmission line.
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Accused Products
Abstract
A method and apparatus for connection of a wind driven turbine generator to an HVDC transmission line is provided that does not require transformation of the wind generated AC voltage to a nominal AC distribution grid frequency. An AC output from the turbine generator is increased in level and converted to HVDC for direct application to a HVDC transmission line. The wind turbine generated AC may be first increased in frequency via a matrix converter and then rectified or may be first rectified and increased in level by a high-voltage DC-DC converter circuit and then applied directly to the HVDC transmission line.
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Citations
15 Claims
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1. A method for high voltage direct current (HVDC) connection of wind turbines for power transmission independently of an AC grid, comprising:
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providing a wind driven generator configured to produce a variable frequency AC voltage output; increasing the voltage level sufficiently to provide power to a HVDC transmission line; converting the voltage to DC; and
,applying the voltage to a HVDC transmission line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus for connection of a variable frequency AC producing wind turbine generator for power transmission to a HVDC transmission line independently of an AC grid, comprising:
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a voltage level increaser; an AC-DC converter; and
,coupling means configured to couple a variable AC output from the wind turbine generator to the voltage level increaser and the AC-DC converter directly to an HVDC transmission line. - View Dependent Claims (12, 13, 14, 15)
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Specification