O. O. Ogbeide

The rising demand for reliable electricity in regions with unstable grid power necessitates the adoption of renewable energy solutions. This project focuses on the design and construction of a 5 kVA, 48 V solar inverter system, capable of integrating solar, battery, and grid power sources for consistent and uninterrupted energy supply to domestic and small office loads. The system integrates solar photovoltaic panels, a battery bank, an MPPT charge controller, and a pure sine wave inverter. It also covers system design, component selection, fabrication, installation, and performance evaluation, with considerations for efficiency, safety, reliability, and cost effectiveness. Experimental testing involved load consumption analysis, continuity and polarity tests, inverter performance evaluation, battery charge–discharge assessment, and protective device verification. The inverter demonstrated a stable AC output voltage of 230 V ± 5 V, frequency of 50 Hz ± 1 Hz, system efficiency of approximately 89.5%, and a Total Harmonic Distortion (THD) of less than 3%. Protective features such as overload, short circuit, reverse polarity, and thermal protection were verified to function effectively. Cost analysis indicated that the local construction of the system is more affordable than imported equivalents, while environmental evaluation highlighted reduced carbon emissions and promotion of clean energy access. The project underscores the feasibility, scalability, and socio economic benefits of solar PV systems, offering a practical framework for renewable energy adoption in rural and semi urban areas.

This project focuses on the development of a 5kVA, 48V hybrid solar inverter system aimed at providing a reliable and sustainable energy solution for domestic and small-scale applications. The system integrates solar photovoltaic (PV) energy with utility grid supply to ensure an uninterrupted power source, with solar energy serving as the primary supply and the grid as backup. A hybrid charging approach was adopted to maintain adequate battery capacity during periods of low solar irradiation. The inverter was designed to deliver a stable output suitable for powering common household and office appliances, while incorporating essential protection features to enhance system safety, efficiency, and reliability. Performance evaluation showed that the inverter provided consistent output with smooth changeover between power sources and improved energy efficiency. The project demonstrates a cost-effective and environmentally friendly alternative to fuel-powered backup systems, reducing dependence on the national grid and promoting cleaner energy usage.

This project focuses on the development of a 5kVA, 48V hybrid solar inverter systemaimedat providing a reliable and sustainable energy solution for domestic and small-scaleapplications. The system integrates solar photovoltaic (PV) energy with utility grid supplytoensure an uninterrupted power source, with solar energy serving as the primary supplyandthegrid as backup. A hybrid charging approach was adopted to maintain adequate battery capacity during periods of low solar irradiation. The inverter was designed to deliver a stable output suitable for powering commonhousehold and office appliances, while incorporating essential protection features to enhancesystem safety, efficiency, and reliability. Performance evaluation showed that the inverterprovided consistent output with smooth changeover between power sources and improvedenergy efficiency. The project demonstrates a cost-effective and environmentally friendlyalternative to fuel-powered backup systems, reducing dependence on the national gridandpromoting cleaner energy usage.