Closed Loop Control On Battery Charge Regulator Lead-Acid Using Switching Technique.

Battery Charge Regulator (BCR) is needed for the solar power system generation. But the battery is often easily damaged due to the excessive charging current and the high temperature. This may the effect of the solar panel voltage being fluctuating and the fickle battery condition. Therefore it is necessary to manufacture BCR with constand current, the excessive voltage, and perform charging at a safe temperature. In this research BCR was made with constant current charging method. Current control is done using the MOSFET switching technique. In order to a constant current, closed loop control is used with a current sensor as a feedback sensor. The duty cycle of switching is regulated through a microcontroller based on the current read by the sensor. In addition, a temperature sensor and a voltage sensor are used as a feedback sensor so that charging runs safely. The results of the experiment show success withthe constantly maintained current at 1.5 A and 2 A. The battery temperature is lower than 40°C. The charge voltage is lower than 14.7 V. And the battery voltage is lower than 13.8 V. [ABSTRACT FROM AUTHOR]