Design and comparative study of photovoltaic maximum power point tracking converter with DC motor speed control

The photovoltaic panels as the power supply depends upon the weather condition (radiation, temperature). These conditions must be known to control the running point of the greatest power of photovoltaic panel. In the present paper, the study and design searching the greatest power point by solar panels direct current motor separately excited speed control. Three control methods studied and designed to search the greatest power point of the photovoltaic panel and speed control of direct current motor. The first method is perturbing and observing controller. The second method is proportional-integral-derivative controller, whereas the controller gains are obtained by using trial and error process. The third method is proportional-integral-derivative controller based on bacterial foraging algorithm. It used to compute the proportional-integral-derivative controller gains. The three control methods are used to obtain the greatest power point of PV panels and improve the direct current motor output speed performance response. The study of comparative results for open loop and close loop system with different designed controllers. The Simulation results were studied and compared under many weather conditions and direct current motor load torque disturbance. The results of comparison that produce the best controller method is proportional-integral-derivative controller with bacterial foraging algorithm which produce optimal performance results.