PERANCANGAN SISTEM HIBRID SOLAR CELL – BATERAI – PLN MENGGUNAKAN PROGRAMMABLE LOGIC CONTROLLERS

Abstract

he demand of energy in the world always increas, but the availability of the fossil energy is extremely decreased. So an alternative energy is needed to supply the energy demand. This research proposes a design of a hybrid system that integrated solar cell – battery – PLN to supply load in the 12 V. This system uses a 100 Wp solar cell. This system has peak performance at 13.00 which produces voltage 20,03 V, current 4,52A and power 90,52W. The voltage output of the solar cell will be regulated by a DC-DC converter and then the output of DC-DC converter will be connected to the PWM generator circuit that using IC LM 324 to sets the duty cycle as the mosfet trigger of buck boost converter circuit. It is expected that the output of the circuit is in the constant value. The battery is fully charged when the voltage achieves 12.7 V, and the battery is charging when it’s 30-40% of full charge, which reach voltage about 11.8 V. PLC use the ladder diagram to implement switch the hybrid systems, the voltage sensor is used as the input to measure the solar cell and battery voltage. The solar cell use to supply load when the voltage output is bigger than 13 V. Battery will be supply when the output is less than 11.8 V. The test shows that the system could work like expected value.