Najmeh Movahhed Neya - MSC student, Faculty of Eng , Science & Research Branch Islamic Azad University Of Tehran, Tehran, Iran
Alireza Siadatan - Power Electronic Lab, Faculty of Electrical & Computer Eng, Shahid Beheshti University, G.C. Tehran, Iran
Sajjad saberi - Industrial Control Lab, Faculty of Electrical & Computer Eng , Amirkabir University Of Technology(Tehran polytechnic), Tehran, Iran

The buck and boost converters are used to transfer electrical energy from photovoltaic cells to consumers. For this purpose a controller system should be designed to transfer the maximum energy. In this paper the desired system is simulated by MATLAB/Simulink software and the best coefficients of PID controller are selected by using frog and genetic algorithms, then the results are compared with each other.