US 12,261,444 B2
Wind power plant collector system
Daniel Soto, Hamburg (DE)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY INNOVATION & TECHNOLOGY S.L., Sarriguren (ES)
Appl. No. 17/927,393
Filed by Siemens Gamesa Renewable Energy Innovation & Technology S.L., Sarriguren (ES)
PCT Filed Apr. 28, 2021, PCT No. PCT/EP2021/061120
§ 371(c)(1), (2) Date Nov. 23, 2022,
PCT Pub. No. WO2021/244806, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 20382485 (EP), filed on Jun. 4, 2020.
Prior Publication US 2023/0246450 A1, Aug. 3, 2023
Int. Cl. H02J 3/38 (2006.01); F03D 9/25 (2016.01)
CPC H02J 3/381 (2013.01) [F03D 9/255 (2017.02); H02J 2300/28 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A wind power plant collector system for a wind power plant, the wind power plant including one or more wind turbines, the wind power plant collector system comprising:
a DC collector grid, wherein the DC collector grid has a symmetrical monopole topology including a first pole and a second pole of opposite polarity, wherein the DC collector grid is configured to collect electrical power generated by the one or more wind turbines and to transport the collected electrical power to a common converter by a DC current having a predetermined current direction in the DC collector grid;
a first current blocking device and a second current blocking device positioned within the DC collector grid, the first current blocking device and the second current blocking device each having a plurality of diodes connectable in series and parallel in between input terminals and output terminals of the first current blocking device and the second current blocking device, respectively;
wherein the common converter is connected to the DC collector grid, the common converter being configured to convert DC electrical power received from the DC collector grid and to provide the converted electrical power to a load;
wherein, in normal operating conditions, current flows from positive terminals of the one or more wind turbines directly to the plurality of diodes of the first current blocking device.