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.

Date of Patent:
Sep. 30, 2025

Filed:

Oct. 24, 2022
Applicant:

Vestas Wind Systems A/s, Aarhus N, DK;

Inventors:

Thomas Hedegaard Bachmann, Randers Nv, DK;

Jesper Kofoed Jensen, Aalborg, DK;

Assignee:

Vestas Wind Systems A/S, Aarhus N., DK;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03D 80/50 (2016.01); F03D 7/02 (2006.01); F03D 7/04 (2006.01);
U.S. Cl.
CPC ...
F03D 80/50 (2016.05); F03D 7/0292 (2013.01); F03D 7/042 (2013.01); F03D 7/0224 (2013.01); F05B 2230/80 (2013.01);
Abstract

A method of retrofitting a wind turbine having a tower and a first energy generating unit with a second energy generation unit is disclosed. The wind turbine has been operated for a first period of time at a first tower life rate and has a first tower life expectancy design value. The method includes determining the tower life of the wind turbine tower used during the first period of time; determining the remaining tower life of the wind turbine tower; replacing the first energy generating unit with the second energy generating unit; and operating the retrofitted wind turbine at a second tower life rate less than the first tower life rate so as to extend the life expectancy value of the tower beyond the first tower life expectancy design value.


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