Double-Frequency Averaging in the Dynamical Model of a Double-Rotor Wind Turbine

Abstract

Mathematical model of a double-rotor vertical axis wind turbine is studied. Aerodynamic and electromechanical load is taken into account. The model is represented in the form of a fourth-order dynamical system. Under some assumptions about initial conditions and parameters, an averaging of the system over two angles is performed. Fixed points of the averaged system are studied as an initial approximation for operation modes of the wind turbine.