DESIGN AND IMPLEMENTATION OF A 5KVA SOLAR POWER SYSTEM

This project focuses on the design and implementation of a 5kVA solar power system aimed at providing a reliable and sustainable source of electricity.To achieve this objective, extensive research was conducted through online and offline sources to understand the fundamental operating principles of solar power systems.Based on these findings, a block diagram was developed to illustrate the key components of the systemnamely the solar panels, inverter, charge controller, and batteries.The installed system is a 5kVA solar inverter with a backup time of three hours at a load of 4kW.The design utilizes six 545 W solar panels, producing a total power output of 3,270W, and an 80A MPPT charge controller to ensure optimal charging efficiency.Four deep-cycle, 220Ah tubular lead-acid batteries (manufactured by Mtekpower) were used for energy storage, regulated by an 80A controller from Basics Company to prevent undercharging and overcharging.A 24VDC, 5kVA pure sine wave inverter from Yohako Company was incorporated to maintain a stable sinusoidal output waveform.A custom solar panel stand was constructed to position the panels at a 15° tilt angle, facing true south, to maximize solar energy absorption throughout the day.Each panel delivers up to 40.63V and 10.17A, and the six panels were connected in parallel to achieve a 24V system with high current output.A 100A circuit breaker was installed for system protection, and a knife changeover switch was used to isolate the utility supply from the inverter system, ensuring a single 240V output to the load.Testing conducted over three days showed maximum voltage and current output between 12noon and 5p.m.When connected to the load, the inverter provided a stable power supply, confirming that the project objectives were achieved.The results further revealed that effective load regulation significantly extends the system's operation period.It is therefore recommended that such installations be carefully and intelligently designed to standard specifications.When properly managed, the inverter system is expected to deliver long-term, reliable performance.