Development And Implemention Of Modified Sinewave 3.5kva Inverter

Abstract

The instability of Nigeria’s power supply has driven research into alternative solutions within the power sector. This paper focuses on the design and construction of a 3.5 kVA single-phase modified sine wave inverter, capable of efficiently converting DC voltage to AC voltage at a reduced cost. The system allows for adjustable output voltage and frequency through an integrated oscillator circuit (SG3524N), transformers, and precise switching and control circuits. Key components, including MOSFETs, diodes, resistors, and deep-cycle batteries, work collectively to meet the functional requirements of a reliable inverter. Challenges encountered during design were addressed, resulting in an inverter that delivers a stable output current of up to 15.9A and a consistent 220V AC output from a 24V DC input during performance testing.