Design and Implementation of 500W Pure Sine Wave DC-to-AC Converter

This paper presents a DC-to-AC power converter for low power hospital equipment. The aim is to efficiently transform a DC power source to a high voltage AC output at low total harmonic distortion and pure sine wave. The modulation technique employed is bipolar switching scheme. It was realized by utilizing a sinewave and triangular generators. Those signal generators are made of capacitor, resistors and TL084 in appropriate form. The proposed system is light in weight and cheap in production. The proposed system produces a clean sinewave inverter voltage output of 220Vrms, power rating of 500W and total harmonic distortion of 2.09%.

Keywords:

dc-ac converter , harmonic distortion , pure sinewave