US 12,476,468 B2
Wind turbine with integrated battery storage
Chris Damgaard, Herning (DK); Lorand Bede, Herning (DK); and Anders Eggert Maarbjerg, Ulstrup (DK)
Assigned to KK Wind Solutions A/S, Ikast (DK)
Filed by KK Wind Solutions A/S, Ikast (DK)
Filed on Nov. 25, 2024, as Appl. No. 18/958,899.
Application 18/958,899 is a continuation of application No. 18/226,939, filed on Jul. 27, 2023, granted, now 12,155,218.
Application 18/226,939 is a continuation of application No. 17/666,340, filed on Feb. 7, 2022, granted, now 11,742,669, issued on Aug. 9, 2023.
Application 17/666,340 is a continuation of application No. 17/056,184, granted, now 11,248,586, issued on Feb. 15, 2022, previously published as PCT/DK2019/050165, filed on May 24, 2019.
Claims priority of application No. PA201870314 (DK), filed on May 25, 2018.
Prior Publication US 2025/0118969 A1, Apr. 10, 2025
Int. Cl. H02J 3/38 (2006.01); F03D 7/04 (2006.01); F03D 9/11 (2016.01); H02J 7/00 (2006.01)
CPC H02J 3/381 (2013.01) [F03D 7/044 (2013.01); F03D 9/11 (2016.05); H02J 7/00714 (2020.01); F05B 2220/7062 (2013.01); F05B 2260/42 (2013.01); F05B 2260/80 (2013.01); F05B 2270/337 (2013.01); F05B 2270/502 (2013.01); F05B 2270/706 (2013.01); H02J 2300/22 (2020.01); H02J 2300/28 (2020.01); Y02E 10/72 (2013.01); Y02E 70/30 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A wind turbine comprising:
a rotor to generate an electric current in a generator,
an electric flow path configured for conducting the electric current to an electric grid;
a battery storage electrically connected to the electric flow path, the battery storage including a plurality of battery cells, each battery cell including at least one battery element and four semiconductor switches; and
at least one controller configured to control a voltage over the battery storage by controlling a status of the respective four semiconductor switches of multiple respective battery cells of the plurality of the battery cells, whereby:
a current path is controlled to bypass at least one respective battery element of one or more of the multiple respective battery cells, or
the current path is controlled to pass through the at least one respective battery element of the one or more of the multiple respective battery cells,
wherein the four semiconductor switches of the multiple respective battery cells are electrically connected to a first uninterruptible power supply switch and to a second uninterruptible power supply switch,
wherein the current path is connected or disconnected from a load via the first uninterruptible power supply switch and the current path is connected or disconnected for a power supply with the second uninterruptible power supply switch,
wherein the at least one respective battery element of the one or more of the multiple respective battery cells is configured to supply the load when connected thereto via the first uninterruptible power supply switch, and
wherein the at least one respective battery element of the one or more of the multiple respective battery cells is configured to be charged from the power system, when connected thereto via the second uninterruptible power supply switch.