Variable Tip Speed Ratio Control in a Stand-alone Small-scale Wind Power Generation System

Abstract

This paper proposes variable tip speed ratio control in a stand-alone small-scale wind power generation systems.The proposed variable tip speed ratio control changes the reference tip speed ratio when the generated power exceeds load power.The vertical axis wind turbine generates required torque of the load by using the proposed variable tip speed ratio control.Digital computer simulation is implemented to confirm the validity of the proposed method using PLECS (Piece-wise Linear Electrical Circuit Simulation) software. Simulation results demonstrate that the surplus power can reduce by the proposed variable tip speed ratio control.