IMPROVED MATHEMATICAL MODEL OF THE ORIENTATION SYSTEM OF THE ROTOR OF A WIND INSTALLATION WITH A VANE PLANE

• Main Authors: Golovko, V., Kokhanievich, V. P., Kokhanievich, V. V.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2023
• Subjects: wind power; wind turbine; wind turbine rotor orientation.; вітроенергетика; вітроустановка; система орієнтації ротора вітроустановки.
• Online Access: https://ve.org.ua/index.php/journal/article/view/395

One of the factors of ensuring the reliable and long-lasting operation of wind turbines is the reliable determination at the design stage of the loads that occur during the orientation of the rotor in the direction of the air flow. In low-power wind turbines, the orientation of the rotor is mainly carried out using the windage of the vane plane of the tail. Under such a scheme, the rotor orientation speed can vary widely depending on the parameters of the wind flow and the parameters of the orientation system, which, accordingly, leads to similar changes in the loads in the blades and other elements of the wind turbine design. All this requires constant improvements of mathematical models of rotor orientation systems to bring them as close as possible to the real physical process. In this work, improved mathematical models of the orientation of the rotor’s orientation by the vane plane are proposed considering next additional parameters of orientation system: the moment from the tangential force, the moment of damping of the rotor and additional devices, the value of the displacement of the center of frontal pressure on the rotor and expressions for individual moments of friction are specified. At the same time, these mathematical models were developed for cases taking into account and without taking into account the operating modes of the rotor, i.e. when, during the orientation of the rotor, its revolutions and frontal pressure change depending on the angle of attack of the air flow on the rotor, or remain unchanged. Bibl. 13, fig. 2.