公开(公告)号：US20210033069A1

公开(公告)日：2021-02-04

申请号：US16964186

申请日：2019-01-22

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Morten LINDHOLM ,  Thomas S. Bjertrup NIELSEN ,  Torben PETERSEN ,  Lars HELLE

IPC: F03D9/25 ,  F03D7/00 ,  F03D5/00 ,  B64C39/02 ,  B64C31/06 ,  H02J3/16 ,  H02J3/32 ,  H02J3/38

Abstract: The present invention relates to wind energy park connected to an electrical grid, having airborne wind energy systems (AWES), e.g. with kites. The wind energy park has an electrical DC network connecting the plurality of AWES and a grid converter unit for converting DC to AC, and transmit AC to the electrical grid. The wind energy park control unit controls the AWES to produce electrical power to the electrical grid by alternating between a power production phase, and a recovery phase so to balance the supply of power to the electrical grid according a demanded setpoint. An advantage is that the grid converter may be smaller, as compared to an AC network, because the power is evened out with the negative power from the AWES being in recovery phase. In this way, the invention stabilizes the grid and has a grid forming capability.

公开(公告)号：US20230421041A1

公开(公告)日：2023-12-28

申请号：US18247732

申请日：2021-09-30

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Thomas Lundgren ANDERSEN ,  Morten LINDHOLM

IPC: H02M1/00 ,  H02M1/12 ,  H02M5/458 ,  F03D13/20

CPC classification number: H02M1/0048 ,  H02M1/0009 ,  H02M1/0043 ,  H02M1/12 ,  H02M5/458 ,  F03D13/201

Abstract: The present invention relates a method for optimizing electrical current in a DC link busbar of a power converter system, wherein the power converter system comprises, a first inverter bridge, connected to the DC link busbar at a first end, the first inverter bridge having a first pulse width modulation signal, and a second inverter bridge, connected to the DC link busbar at a second end, the second inverter bridge having a second pulse width modulation signal, measuring a current flowing in the DC link busbar from the first end to the second end, optimizing the current flowing in the DC link busbar by delaying the first pulse width modulation signal and the second pulse width modulation signal from each other with a carrier delay, the invention also relates to power converter and wind turbine with optimizing electrical current in a DC link busbar.