Dynamics of Maximum Power Point Wind Energy Battery Charging Systems

In this paper the dynamics of a maximum power point wind energy battery charging system and the implementation of a DC to DC converter is investigated. The required design specifications for a sub 5 kW wind generator are discussed as well as the modelling of the different components of the wind energy system. The duty cycle control of the DC to DC converter for maximum power point tracking at different wind speeds is done by implementing a functional generator. The functional generator adjusts the duty cycle of the converter according to the generator speed. In order to investigate the duty cycle control method and the system’s stability the system is simulated with MATLAB Simulink to determine the response. It was found that the proposed duty cycle control method is effective in maximum power point tracking. Also, that the system’s response is stable for higher frequency disturbances.