Oscillations of a Wind Power Plant with Several Moving Masses Using the Galloping Effect

Abstract

We consider a chain of several bodies that can move translationally along a horizontal line. The neighboring bodies are connected to each other by springs. One end of the chain is fixed, and on the other there is a body, which is a rectangular parallelepiped of a square section. The system is placed in a horizontal stationary medium flow perpendicular to the specified straight line. Under the assumption that the flow affects only the parallelepiped, the dynamics of this system are studied as a potential working element of an oscillatory wind power plant using the galloping effect. For a different number of bodies in a chain, different values of flow velocity and external load, periodic regimes in the system are studied. It is shown, in particular, that an increase in the number of bodies in a chain makes it possible to increase the maximum power that can be obtained using the device and to reduce the critical speed at which oscillations occur. A scheme for regulating the load resistance is proposed, aimed at ensuring the transition to an oscillatory mode with maximum power.