The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 2017
Filed:
Jan. 30, 2012
Per Nielsen Lindholdt, Aarhus C, DK;
Eik Herbsleb, Odder, DK;
Allan Holm Jørgensen, Aalborg Ø, DK;
Christian Mark Nielsen, Viby J, DK;
Hans Henrik Højsgaard, Viborg, DK;
Peter Koldkjær, Aarhus N, DK;
Kristian Gregerssen, Aalborg, DK;
Per Nielsen Lindholdt, Aarhus C, DK;
Eik Herbsleb, Odder, DK;
Allan Holm Jørgensen, Aalborg Ø, DK;
Christian Mark Nielsen, Viby J, DK;
Hans Henrik Højsgaard, Viborg, DK;
Peter Koldkjær, Aarhus N, DK;
Kristian Gregerssen, Aalborg, DK;
VESTAS WIND SYSTEMS A/S, Aarhus N, DK;
Abstract
A hydraulic transmission for a wind turbine that includes a rotor, one or more blades mounted to the rotor, a hydraulic pump mechanically connected to the rotor, and a hydraulic motor. The hydraulic pump and the hydraulic motor are connected to one another by a high pressure circuit. The hydraulic pump maybe a variable displacement hydraulic pump and the hydraulic motor may include a variable displacement hydraulic motor. The wind turbine, including the rotor, the blades of the rotor, the hydraulic pump, and the hydraulic motor may be controlled according to different approaches.