A new technique in reducing self-power consumption in the controller of off-grid solar home system

• Published in: International Journal of Power Electronics and Drive Systems Vol. 13; no. 4; p. 2235
• Main Authors: Islam, Mohammad Shariful, Noor, Siti Zaliha Mohammad, Mohamad, Hasmaini, Salim, Nur Ashida, Yasin, Zuhaila Mat
• Format: Journal Article
• Language: English
• Published: Yogyakarta IAES Institute of Advanced Engineering and Science 01.12.2022
• Subjects: Algorithms; Controllers; Design; Economic analysis; Economic models; Electrical engineering; Energy consumption; Energy storage; Engineering schools; Integrated circuits; Operational amplifiers; Operations research; Photovoltaic cells; Power consumption; Power management; Semiconductor devices; Time functions; Transistors
• ISSN: 2088-8694; 2722-256X; 2088-8694
• DOI: 10.11591/ijpeds.v13.i4.pp2235-2243

Reducing the self-power consumption of an off-grid solar home system is an economic model in which consumer employs photovoltaic (PV) system for its own electrical requirements. The latch-based clock gating approach has been employed in existing solar charge controllers to reduce integrated circuit (IC) power being used in the low-powered intended mode, although the reducing power is limited. This paper presents a self-power reduction technique based on wake-up power and latch-hold time; which minimize power supply during idle time for a solar home system. Wake-up power introduces a push-switch mechanism using typical transistor technology. Latch-hold time function is designed using an operational amplifier and negative-positive-negative (NPN) transistor. A technique with dynamic self-supply mechanism is also introduced for decreasing self-power consumption. The self-power consumption is identified via simulation studies where the result shows that the power usage is 70% lower than traditional approaches. This is determined using a simulated wave-shape analysis.