Vestas

About: Vestas is a company organization based out in Aarhus, Denmark. It is known for research contribution in the topics: Turbine & Wind power. The organization has 1075 authors who have published 1519 publications receiving 23285 citations. The organization is also known as: Vestas Wind Systems & Vestas Wind Systems A/S.

Control system for damping structural vibrations of a wind turbine system having multiple rotors

Abstract: A wind turbine system comprising a plurality of wind turbines mounted to a support structure including a tower, wherein each of the plurality of wind turbines includes a rotor and a power generation system driven by the rotor, and at least one of a rotor blade pitch adjustment means and a generator power control means. The system further includes control means that receives vibration data associated with the support structure and which is configured to determine a damping control command for a respective one of the plurality of wind turbines, wherein the or each of the wind turbines includes a damping controller that receives a damping control command and which is operable to apply a damping control input to one or both of the blade pitch adjustment means and the generator power control means so as to counteract the measured vibration of the support structure. A benefit of the invention is that the operation of the multiple turbines of the system is used to reduce the effects of structural vibration by damping that vibration in an active manner.

Generator system with intelligent processing of position signal

Abstract: An electric power generator system is provided with improved power efficiency due to a reduced sensitivity to errors in the sensing of angular rotor position. The system includes a power generator with a rotor, and a position encoder connected to sense angular position of the rotor and to generate a position signal accordingly. A processor receives the position signal, calculates an angular position in response, calculates an estimated angular position based on earlier received position signals, and finally generates a processed angular position based on the calculated angular position and the estimated angular position. This processed angular position is a more reliable measure of the rotor position, reducing the influence of short-term errors in the position signal, allowing normal wind turbine operation during temporary position encoder failure, and allowing an orderly shutdown during complete position encoder failure.

Method for manufacturing a wind turbine blade

Abstract: The invention relates to a method for manufacturing a wind turbine blade or a section of a wind turbine blade. The method includes, establishing a first part having a first wind turbine blade part in a first fixating unit, establishing a second part having a second wind turbine blade part in a second fixating unit, and positioning the first part in contact with, or in close proximity of, the second part. After this, a pressure below atmospheric pressure is established, forcing the first wind turbine blade part and the second wind turbine blade part against each other. The invention further relates to a wind turbine blade manufacturing facility, wind turbine blades as well as uses hereof.

Method and system for testing wind turbine plants

Abstract: The present invention relates to a method and a system for on-site and full-scale testing of wind turbine plants. In particular, the present invention relates to a method and a system applying resonance circuits tuned with the fundamental frequency, or harmonics thereof, of a power supply grid connected to a wind turbine plant to be tested. The wind turbine plant to be tested may remain connected to the power supply grid during on-site and full-scale testing.

Simulation of a maximum power output of a wind turbine

Abstract: The present invention relates to determining and setting wind turbine type maximum power level (301) and individual wind turbine maximum power level (308) for over-rating control.