One of the principal applications of fuzzy logic is in control system design. Fuzzy logic controllers (FLC) can be used to control systems where the use of conventional control Techniques may be Problematic .in this paper Fuzzy logic controller is fabricated on modern Field Programmable Gate Array (FPGA)Card to track the sun to increase the energy generation efficiency of solar cells. Sun Tracking Controller is tested using model designed by Matlab/Simulink program. Finally we have compared with a conventional perturbation and observation controller. Simulation and experimental results show that performance of the fuzzy controller with FPGA is better than the perturbation and observation controller.