A PHOTOVOLTAIC UTILIZATION SYSTEM WITH BANG-BANG SELF-ADJUSTING MAXIMUM ENERGY TRACKING CONTROLLER

The paper presents an error driven controller for maximum energy utili zation of photovoltaic PV renewable energy interface schemes. The erro r driven comprises of regulation loops ensuring on-line dynamic tracki ng of the maximum power point under different variations in solar insu lation levels or sudden mechanical load excursions. The bang-bang regu lator limiter block is self-adjusting as it is driven by the error exc ursion vector magnitude. This ensures that the control signal is modul ated in magnitude by the distance of error deviation in the error hype r plane. The paper details a digital simulation MATLAB/SIMULINK model of a PV - PMDC motor utilization system driving a ventilation, pumping or air-conditioning mechanical load. (C) 1998 John Wiley & Sons, Ltd.