Solar photovoltaic emulation under uniform irradiance and partial shading conditions using fuzzy logic control

Abstract

This paper proposes a new design and development of photovoltaic (PV) source emulator, this nonlinear power supply has as purpose to facilitate the research on PV systems by reproducing the electrical behavior of actual PV modules and providing as a result similar current-voltage (I-V) and power-voltage (P-V) characteristics. The current study provides some simulation results using Matlab Simulink software of the developed PV array emulator, which consists basically on a fuzzy logic controlled interleaved DC-DC buck converter, this nonlinear controller is able to deal with the nonlinearity of the PV characteristics and it has good robustness against weather parameters variation and dynamic loading. Furthermore, the proposed PV array emulator can emulate PV array under uniform solar irradiance as well as partial shading conditions.