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：US20190170119A1

公开(公告)日：2019-06-06

申请号：US16306850

申请日：2017-06-06

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： Thomas S. Bjertrup NIELSEN

IPC: F03D7/04 ,  F03D7/02 ,  H02P9/04 ,  G05B19/042

Abstract: A controller for a wind turbine is disclosed, comprising: a processor; an input/output interface; and a memory including instructions that, when executed by the processor, cause the processor to: i) select a setting xi from a list of settings X1, . . . , XN; ii) operate the turbine according to setting Xi for a period of time t1; iii) record a power output signal over t1; iv) repeat steps i) to iii) for another setting in X1, . . . , XN until all N settings have been used; v) repeat steps i) to iv) for a number of cycles c; vi) calculate a summarized power output for each setting over all cycles; and vii) compare the summarized power outputs across settings and determine whether any setting X* results in a higher power output than other settings tested. A method of identifying power production improvements in a wind turbine, a computer program and a wind turbine are also disclosed.