US Patent No: 8,198,742

Number of patents in Portfolio can not be more than 2000

Variable speed wind turbine with a doubly-fed induction generator and rotor and grid inverters that use scalar controls

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ALSO PUBLISHED AS: 20090206606
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Importance

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Abstract

The present invention relates to an improved wind turbine, of the type which employs doubly fed induction generators (DFIG), and a wind park including the same, which permits the use of lighter weight turbines, with the ability to have greater energy capture, more precise control of asymmetrical phases and enhanced maintenance and support of the grid during fault conditions.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
VESTAS WIND SYSTEMS A/SRANDERS SV, DK216

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Helle, Lars Aalborg, DK 31 191
Jørgensen, Allan Holm - 4 12
Schaier, Leonard - 6 19

Cited Art

Patent Info (Count) # Cites Year
 
VESTAS WIND SYSTEMS A/S (2)
7,966,103 Apparatus and method for operating a wind turbine under low utility grid voltage conditions 4 2008
8,049,352 Apparatus and method for controlling the reactive power from a cluster of wind turbines connected to a utility grid 4 2008
 
KOREAN ELECTRO TECHNOLOGY RESEARCH INSTITUTE, A CORPORATION ORGANIZED UNDER LAWS OF THE REPUBLIC OF KOREA (1)
7,638,983 Controller of doubly-fed induction generator 4 2007
 
MITSUBISHI HEAVY INDUSTRIES, LTD. (1)
7,728,452 Wind power generator system and control method of the same 11 2007
 
OREGON STATE UNIVERSITY (1)
5,239,251 Brushless doubly-fed motor control system 52 1991

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
ROCKWELL AUTOMATION TECHNOLOGIES, INC. (1)
8,432,052 Wind power converter system with grid side reactive power control 0 2010
 
VESTAS WIND SYSTEMS A/S (1)
8,395,360 Direct power and stator flux vector control of a generator for wind energy conversion system 0 2011
 
WOODWARD KEMPEN GMBH (1)
8,400,004 Method for operating a wind turbine 0 2009

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