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Multirotor wind turbine power boost strategy

A technology of wind turbines and multi-rotors, which is applied in the direction of wind turbines, control of wind turbines, monitoring of wind turbines, etc. It can solve problems such as overheating of generators or converters, and achieve the effect of high power boosting capacity

Pending Publication Date: 2021-03-26
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unlimiting the above mentioned rotor speeds at higher wind speeds will e.g. lead to overheating of the generator or converter

Method used

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  • Multirotor wind turbine power boost strategy
  • Multirotor wind turbine power boost strategy
  • Multirotor wind turbine power boost strategy

Examples

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Embodiment Construction

[0024] figure 1A multi-rotor wind turbine 100 in which the invention may be used is schematically shown. Currently the most common type of wind turbine is the horizontal axis wind turbine (HAWT). It usually has a nacelle placed on top of a tall vertical pole with the rotor blades attached to a horizontal low speed shaft protruding from the nacelle. The nacelle may include a gearbox for coupling a low speed shaft to a also horizontal high speed shaft, which is connected to the generator. Electricity generated by the generator is transmitted to the ground via power lines passing through the core of the pole, where it can be used immediately or stored, or connected to a larger grid. Among them, in the past, wind turbines and their rotor blades have become larger and larger to meet the growing demand for wind power generation, and recently another strategy has been introduced; the multi-rotor wind turbine 100 . Instead of one nacelle with one rotor on top of the mast, the multi...

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Abstract

The present invention is directed to operation of a multi-rotor wind turbine comprising at least two rotors. Each rotor has a rated capacity. The method comprises monitoring a power output of the rotors, detecting that the power output of at least a first one of the 5 rotors is below its rated capacity, detecting that the power output of at least a second one of the rotors is at its rated capacity, and controlling operation of the second rotor, such as to temporarily increase its power output to a value above its rated capacity.

Description

technical field [0001] The invention relates to a method of operating a multi-rotor wind turbine. The invention also relates to a multi-rotor wind turbine. Background technique [0002] In a wind turbine, kinetic energy from the wind is converted to electrical energy by a rotor coupled to a generator, usually via a gearbox. A power converter (also called a "converter") converts the generator's output into electrical power suitable for delivery to the grid. An important parameter of a wind turbine is its annual energy production (AEP). The AEP of a wind turbine depends on the wind speed during the year and the maximum power output that the generator can deliver for a sustained period of time. This maximum power output is often referred to as rated power. The wind speed at which the rated output power is reached is called the rated wind speed. At wind speeds below the rated wind speed, the wind turbine will operate at its maximum efficiency. At wind speeds above the rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/02F03D1/02F03D17/00F03D7/04
CPCF03D7/028F03D1/02F03D17/00F05B2270/335F03D7/047Y02E10/72F05B2240/37F05B2270/1033
Inventor S·达尔斯高
Owner VESTAS WIND SYST AS
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