నైరూప్య

ZVS based current fed converter for PV system with voltage doubler

Dr.R.Balamurugan, V.Kamsala

In this paper Incremental Conductance (IC) algorithm for photovoltaic (PV) system with full bridge isolated current fed DC/DC converter with output voltage doubler is proposed. This algorithm is used to obtain the high efficiency and to protect the systems from the variations of the temperature and irradiance. In this paper maximum output power tracking and different modes of operations of proposed DC/DC converter is presented. The PV output is fed to the current fed DC/DC converter to obtain the high output voltageand it is controlled by the Proportional Integral (PI) controller. Soft switching technique is also implemented to improve the performance of converter. The Zero Voltage Switching (ZVS) is maintained for all switches in the converter. Voltage doubler is connected in the high voltage side which results in twice the amount of input voltage with reduced components. The MATLAB/Simulink toolbox is used to model the PV system with full-bridge isolated current fed DC/DC converter and simulation results validate the working of the proposed DC/DC converter