DEVELOPMENT OF A 2 KVA SOLAR INVERTER
Abstract
This project presents the design and development of a 2 kVA inverter system to address the
problem of unreliable electricity supply. The system was designed, modeled, and built to
convert low-voltage DC from a battery source into a stable 220–230 V AC output that can
power household and small business appliances. The design uses a MOSFET driver stage, a
pulse-width modulation (PWM) control system, and a filter unit to improve the output
waveform. A solar charging unit was also included to make the system more sustainable.
Tests carried out on the prototype showed that the inverter produced a no-load AC output of
220 V with a 12 V input system and 227 V with a 24 V input system, while maintaining battery
voltages of 13.8 V and 25.4 V. The charging current and voltage readings under different
weather conditions confirmed stable system operation and effective charging. The system also
showed good efficiency, low distortion, and reliable performance.
This project shows that a 2 kVA inverter can serve as an affordable and practical alternative
power supply for homes and small businesses. The work also provides useful guidance for
future research in inverter design and renewable energy systems.
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