Speed control of separately excited dc motor supplied by PV arrays

Abstract

Abstract – In this work an integration of photo voltaic (pv) array connected to dc-dc buck converter will be introduce , this kind of converter play an important role for regulating dc voltage supplied from pv , it reduce the value of voltage according to loads .A separately excited dc motor will be connected to the system as a load , where this motor may exposed to variation in load conditions .PI controller presented as a solution to overcome the changing in load condition , by varying the voltage value it can regulate the motor speed under different sudden change load. (PID) considered a best choice for control circuit in nonlinear system like drive system. the goal of using it derived from adjusting the input voltage to converter under acceptable values. this work proved that using (PI) offering a better performance rather than traditional PID controller in such nonlinear system by enhancing its efficiency and reliability .