MPPT Controlled Battery Charger Design and Simulation

Abstract

In this paper, the design of MPPT controlled DC-DC boost converter for PV charger application is presented.  Duty cycle of the designed boost converter, which operates in 50 KHz, is controlled directly by P & O algorithm in order to track maximum power point of the PV panel that is changing in response of variation insolation of sunny day. The designed Boost converter is used as interface unit for matching 24V battery bank (20AH, 12V, C/5) with CANADIAN SOLAR CS5C-90 panel. The overall system is built and validated by using MATLAB SIMULINK. The simulation results show that the average efficiency of proposed MPPT controlled DC-DC converter is 98.34%, which is calculated by comparing the tracked PV power by designed converter and the proposed maximum power of the panel for different level of insolation. The results express the effective operation of designed converter system by tracking MPP for PV panel in different insolation situations.