Estimating free-stream inflow at a wind turbine
AssigneeSiemens Gamesa Renewable Energy A/S
InventorPieter M. O. Gebraad
Life of this patent
Estimating the term…
Abstract
Provide is a method of estimating free-stream inflow at a downstream wind turbine of a wind park, the method including: selecting, from plural candidate wind turbines previously defined specifically for the downstream wind turbine, an upstream wind turbine based on a currently determined wind direction; using determination equipment of the selected upstream wind turbine to determine the free-stream inflow.
Claims14
A method of estimating free-stream inflow at a downstream wind turbine of a wind park, the method comprising:
- selecting, from plural candidate wind turbines previously defined specifically for the downstream wind turbine, an upstream wind turbine based on a currently determined wind direction;
- determining, a wind measurement system of the selected upstream wind turbine, the free-stream inflow at the downstream wind turbine by utilizing free-stream inflow at the upstream wind turbine and correcting it with a time delay calculated from the wind speed, wind direction and a distance between the upstream wind turbine and the downstream wind turbine;
- and
- controlling, the rotor speed and/or blade pitch of the downstream wind turbine based on the determined free-stream inflow.
An arrangement for estimating free-stream inflow at a downstream wind turbine of a wind park, the arrangement comprising:
- a server or wind park controller communicatively connected with the wind turbines configured to compute control signals configured to control a wind turbine, the server or wind park controller adapted to select, from plural candidate wind turbines previously defined specifically for the downstream wind turbine, an upstream wind turbine based on a currently determined wind direction;
- and
- a wind measurement system of the selected upstream wind turbine adapted to determine the free-stream inflow at the downstream wind turbine by utilizing free-stream inflow at the upstream wind turbine and correcting it with a time delay calculated from the wind speed, wind direction and a distance between the upstream wind turbine and the downstream wind turbine,
- wherein the server or wind park controller is configured to control the rotor speed and/or blade pitch of the downstream wind turbine based on the determined free-stream inflow.
A wind park, comprising:
- plural wind turbines including a downstream wind turbine and a plurality of upstream wind turbines that are upstream from the downstream wind turbine;
- and an arrangement for estimating free-stream inflow communicatively connected to the plural wind turbines, the arrangement comprising:
- a server or wind park controller adapted to select, from the plurality of upstream wind turbines, an upstream wind turbine based on a currently determined wind direction;
- and
- a wind measurement system of the selected upstream wind turbine adapted to determine the free-stream inflow at the downstream wind turbine by utilizing free-stream inflow at the upstream wind turbine and correcting it with a time delay calculated from the wind speed, wind direction and a distance between the upstream wind turbine and the downstream wind turbine, wherein the server or wind park controller is configured to control the rotor speed and/or blade pitch of the downstream wind turbine based on the determined free-stream inflow.
Dependencies are inferred from the claim text.