Design and analysis of DC DC converter for solar PV system

Abstract

The main objective of this research work is to design and implement a direct control DC DC Cuk converter based Maximum Power Point Tracking system to extract maximum power from a solar PV module which uses Adaptive Perturb and Observer algorithm This algorithm is simulated in MATLAB Simulink and implemented using an ATMEGA16 micro controller The nominal duty cycle of the main switch in the Cuk converter is adjusted to a value so that the input resistance of the converter is equal to the equivalent output resistance of solar PV module to ensure maximum power extracted from solar PV module The effectiveness of the APAO algorithm is tested for the change in irradiation Hardware validation is carried out for the converter with the solar PV module with a rating of 37Wp and operating at 25 kHz The efficiency of solar PV system used in space satellite mainly depends on the efficiency of DC DC power conditioning process High efficient DCDC converter has to be designed which is more suitable in solar PV application This work also proposes to design different control methods ie traditional PWM with periodic carrier Zero Voltage Switching Zero Current Switching and PWM with chaotic carrier are simulated and implemented in terms of their performance in suppressing ripples reducing peaky electro magnetic inference and increasing converter conversion efficiency in MPPT circuits of the solar PV powered system newline newline