ABSTRACT
The aim of this project is to design and analyze an MPPT charge controller for solar PV systems and study the irradiance effect on the system. Irradiance is the radiant flux received by a surface per unit area.
To implement this, a set up for the PV array with the PV module connected was modeled simulated in MATLAB/SIMULINK. Using the voltage at maximum power point and current at maximum power point of the solar panel, the number of parallel string was calculated. Then the constant block for irradiation and constant block for temperature was connected; followed by the series RLC branch which will be updated to capacitor and resistor branch then the IGBT block, Diode block, Current measurement block, Voltage measurement block, Bus selector block, Unit delay block, Summer block, Switch block, Constant block, Gain block, Saturation block, PID controller block, PWM Generator block, Goto block, Scope block and Power gui block.
Having designed, simulated and analysed the mppt charge controller, it effectively tracked the maximum power point and thus lead to a higher energy production from 3MW to 3.5 MW. From the graphs provided afterward during observation, it was observed that for higher irradiance; higher voltage and higher power output was gotten. Hence less irradiance, less voltage and less power generated. However, for lesser temperature; higher voltage and higher power output was gotten. Hence for higher temperature, less voltage and less power will be generated.
