SINGLE-INPUT MULTI-OUTPUT CONVERTER WITH BACKUP BATTERY FOR ENERGY HARVESTING SYSTEM OF THE GAS SENSOR

Abstract

This paper presents a single-input multi-output converter with backup battery for energy harvesting system of the gas sensor. Energy harvesting techniques used to catch energy from ambient light through photovoltaic (PV) modules as the main power source and regulate two outputs- 3.3V and 15V for different loads by a dc-dc converter. The backup battery is connected to input and output side of this system as a source and a load, when the PV energy more than the power of load, surplus energy charged in the rechargeable battery, when the ambient energy small than power of load, converter will storage power from PV cells, then charge power from battery and feed energy to the load. Finally, a multi-output converter for energy harvesting system is implemented to verify the precision of control strategy, light input and heavy input condition proposed in this paper.