Modelling and simulation of automatic controlled solar input single switch high step-up DC-DC converter with less duty ratio

Abstract

In view of the advantages and disadvantages of present high step-up converters, a single switch high step-up converter is presented for the application of renewable energy source (RES) such as solar energy. This converter is predicated on the standard SEPIC converter, not just can acquire the SEPIC's point of interest that the continuous input current will compel directed EMI issues, additionally can accomplish high voltage pick up without extreme duty cycle and the peak voltage of semiconductor parts is lower than the output voltage. Proportional integral (PI) controller is proposed, and the overall performance of the system was analysed and compared with different load conditions to sift the operation of continuous conduction mode (CCM) and discontinuous conduction mode (DCM). This paper presents operation, design, mathematical analysis and simulation of a PV module fed DC-DC converter using PI controller in order to acquire the efficient operation of the system. The design aspects include selection of converter components, closed-loop parameters and their analysis. The simulations are carried out by using MATLAB/Simulink software and results are presented.