Prime-mover dynamo plants – Electric control – Fluid-current motors
Reexamination Certificate
2007-05-08
2007-05-08
Waks, Joseph (Department: 2834)
Prime-mover dynamo plants
Electric control
Fluid-current motors
Reexamination Certificate
active
11063409
ABSTRACT:
A method and apparatus for converting wind generated electricity to constant frequency electricity for supplying it to a utility grid. use a wind turbine generator having a doubly fed induction generator. Above the synchronous speed of the generator, the electricity from the rotor is converted to direct current (dc) electricity and the de electricity is converted back to alternating current (ac) electricity at a fixed unity power factor. Below synchronous speed, electricity flows to the rotor from the utility grid also at a fixed unity power factor. The current of the ac electricity is adjusted to be in phase with the utility grid voltage, wherein the ac electricity is maintained substantially at unity power factor.
REFERENCES:
patent: 4695736 (1987-09-01), Doman et al.
patent: 4994684 (1991-02-01), Lauw et al.
patent: 5028804 (1991-07-01), Lauw
patent: 5798631 (1998-08-01), Spee et al.
patent: 6137187 (2000-10-01), Mikhail et al.
patent: 6566764 (2003-05-01), Rebsdorf et al.
patent: 6741059 (2004-05-01), Gokhale et al.
patent: 6855028 (2005-02-01), Siegel
patent: 6924565 (2005-08-01), Wilkins et al.
patent: 6954004 (2005-10-01), Skeist et al.
patent: 2002/0079706 (2002-06-01), Rebsdorf et al.
patent: 2004/0026929 (2004-02-01), Rebsdorf et al.
patent: 2004/0151584 (2004-08-01), Blakemore
patent: 2004/0222642 (2004-11-01), Siebenthaler et al.
patent: 2004/0257832 (2004-12-01), Skeist et al.
patent: 2005/0040655 (2005-02-01), Wilkins et al.
patent: 2005/0151377 (2005-07-01), Ichinose et al.
patent: 2005/0236838 (2005-10-01), Rosebrock et al.
patent: 2005/0253396 (2005-11-01), Mikhail et al.
patent: 2006/0028025 (2006-02-01), Kikuchi et al.
patent: 2006/0244265 (2006-11-01), Ichinose et al.
patent: 1499009 (2005-01-01), None
patent: 2411252 (2005-08-01), None
patent: 2420456 (2006-05-01), None
patent: WO 2004040748 (2004-05-01), None
patent: WO 2004098261 (2004-11-01), None
patent: WO 2006030183 (2006-03-01), None
T.A. Lipo, “Variable Speed Generator Technology Options for Wind Turbine Generators,” Department of Electrical and Computer Engineering, University of Wisconsin (1984).
T.S. Jayadev, “Novel Electric Generation Schemes for Wind Power Plants,” College of Engineering and Applied Science, University of Wisconsin-Milwaukee (1975).
Werner Leonhard, “Control of Electrical Drivers—Third Edition,” pp. 303-316, Springer-Verlag Publishing Group (2001).
Duckor Spradling Metzinger & Wynne
Kleinke Bernard L.
Waks Joseph
Xantrex Technology Inc.
LandOfFree
Method and apparatus for converting wind generated... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for converting wind generated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for converting wind generated... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3792997