Development of a Microcontroller Based Low Distortion Modified Push-Pull Power Inverter

Abiodun Alani Ogunseye, Taofik Titus Ogunseye


Abstract— Some measures of merit of an inverter system are the total harmonic distortion and the efficiency figures. On one hand, we have square wave and modified square wave inverters that have high efficiency and total harmonic distortion (THD) figures. On the other hand, there are the true sine wave inverters that have low THDs and relatively low efficiency figures at high output power levels. In this work, a five level waveform that can be synthesized efficiently was analysed for low distortion figures, and a THD figure of 1.25% was obtained. A microcontroller-based inverter circuit was designed to synthesize this waveform from a 12 volts d.c source. The microcontroller firmware and hardware were developed using MicroC® and Proteus® softwares respectively. The developed circuit generated a 50 Hz sinusoidal output waveform from a 12 volts battery source after filtering with an LC low pass filter.    


Microcontroller, Five level Waveform, Push Pull inverter, Total Harmonic Distortion

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Abdelati, M. (2014). Design and Implementation of a Viable Power Inverter. 5th International Conference on Engineering and Sustainability. Islamic University of Gaza, Gaza.

Gana, J. A. (2010). Design and Development of Inverter with AVR Using Switch mode Square Wave Switching Scheme. AUJT.

Gottlieb, I. (1985). Power Supplies: Switching Regulators Inverters and Converters (first ed.). New Delhi: BPB Publications.

Hann, J. H. (2006). Modified Sine-Wave Inverter Enhanced. Power Electronics Technology.

Ravikumar, K.E.Ch. Vidyasagar, Hidayathula Patnam, Ponnaganti Siva Ramakrishna. (2014). A SPWM Full Bridge Inverter With Transformerless PV Grid Connected Inverter. International Journal of Science Engineering and Advance Technology (IJSEAT ) , 2 (5), 136-144.

Ogunseye A. A., Olusanya O. O and Olusesi A. T. (2016). Development of Microcontroller Based Enhanced Modified Sinewave Inverter. International Journal of Engineering Research and Technology , 5 (3).

Ogunseye, A. A and Ogunseye, T. T. (Nov-Dec 2015). Development of a Microcontroller Based 12/24 Volts Push Pull Inverter System. IOSR Journal Of Electrical and Electronic Engineering (IOSR-JEEE) , 16-21.

Sachin Maheshri and Prabodh Khampariya. (2014). Simulation of Single Phase SPWM (Unipolar) Inverter. International Journal of Innovative Research in Advanced Engineering (IJIRAE) , 1 (9), 12-18.