Design of batteries charging by charge management concepts on photovoltaic standalone system

Charging systems of battery electric current from the PV source with pulse charging technique is done to distribute high electric current to the battery without causing damage to the functionality and performance of the battery through a process to vary the pulse width. Techniques vary the pulse width is done by adjusting the duration of the charging current through the control of electronic switches, the advantage of this technique is there a time lag (break) for the battery in the process of stabilizing the electrode, besides the rate of temperature increase is small when charging process. The Charge management concept is the charging process of three battery units independently, when one battery is in full condition, the system will disconnect the charging line and two other units keep to do the battery charging process without being influenced by the change of battery. The implementation of this concept aims to maintain the power balance of PV in order to remain continuously supplies energy at the point of maximum. The simulation results of mode MPPT obtained an average of current charging of the battery-1, battery-2 12V/5Ah of 2,53A and battery-3 of 0,315A. The average level of the battery SOC rises in mode MPPT was battery-1 of 50.0237%, battery-2 of 50,024% and battery-3 of 50,0067 and mode constant voltage obtained battery-1 of 50.009%, battery-2 of 50,009% and battery-3 of 50,0067 for charging 2 seconds at radiant 1000W/m2 and a temperature of 25°C.