Pitch control method and system of symmetrical-airfoil vertical axis wind turbine

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United States of America Patent

PATENT NO 11549489
APP PUB NO 20210372372A1
SERIAL NO

17334260

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Abstract

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A pitch control method and system of a symmetrical-airfoil vertical axis wind turbine collects data by an anemometer, an anemoscope and an angle sensor, outputs an optimum pitch angle based on a control law of a pitch angle and controls the pitch angle to be the optimum pitch angle through a pitch control actuator. In addition to input variables of the control law such as a wind velocity vin and a blade azimuth angle Ψ, constants such as a rotation radius R, a rotation velocity Ω of the blade and aerodynamic coefficients c1, c2 and c3 are also related. A Reynolds number has little influence on three aerodynamic coefficients c1, c2 and c3. The pitch actuator controls the adjustment rods to realize the automatic pitch control of the blades. An expression of the control law of the pitch is concise, the calculation time is short, and a response speed is fast.

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Patent Owner(s)

Patent OwnerAddress
ANHUI UNIVERSITY OF SCIENCE AND TECHNOLOGY232001 NO 168 TAIFENG STREET HUAINAN CITY ANHUI PROVINCE HUAINAN CITY ANHUI PROVINCE 232001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jing, Laiwang Huainan, CN 1 1
Li, Liang Huainan, CN 515 3124
Miao, Guanghong Huainan, CN 1 1
Wang, Long Huainan, CN 293 1389
Wu, Jianqiang Huainan, CN 3 1

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