Journal ID : TRKU-20-04-2020-10700
[This article belongs to Volume - 62, Issue - 04]
Total View : 188

Title : Analysis of a Charge Controller Circuit with Maximum Power Point Tracker (MPPT) For Photovoltaic System

Abstract :

The limited availability of resources to meet day-to-day increase in power demand due to the limitations of conventional energy resources have become the concern of every nation. An unpleasant case is that of Nigeria where the power supply depends mainly on hydro, leading to inefficient power generation and distribution. In this research, a charge controller with Maximum Power Point Tracker (MPPT) for photovoltaic system was implemented using a micro controller PIC 16F8768 and a prototype was constructed with an output voltage of 24 volts for optimum energy transfer throughout a day. Proteus 8.0 software was used for the task. The average of each term; voltage, current and power outputs were taken along their efficiencies for both dry season and rainy season. The MPPT is responsible for extracting the maximum possible output from the photovoltaic and feeding it into the load via the boost converter which step up the voltage to the required level. The performance characteristics of the charge controller with MPPT and without MPPT of the different output voltages were measured. Both output voltage and currentwith the MPPT and without MPPT were compared in terms of time (dry season and rainy season) and total power was evaluated. By using Proteus 8.0 software, the charge controller with MPPT was also simulated. Result shows that the efficiency of power without MPPT was 58.7% whereas with MPPT was60.33%. The charge controller with MPPT gives 5.632 W maximum power at 3:05 pm. The charge controller with MPPT has better performance even though this advantage is at the expense of additional components that make up the tracking unit of the charge controller system. Therefore, it can be recommended where the availability of grid is very low. Another advantage of using charge controller circuit with MPPT is that it supports portable operations where necessarily

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