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Design and Construction of a Pure Sine Wave Inverter

Omotosho, T. V. and Abiodun, D. T. and Akinwumi, S. A. and Ozonva, C. and Adeyinka, G. and Obafemi, L. N. (2017) Design and Construction of a Pure Sine Wave Inverter. Journal of Informatics and Mathematical Sciences. pp. 397-404. ISSN 0975-5748 (online); 0974-875X (print)

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This research is a design and implementation of a sine wave inverter circuit developed to run AC appliances at a low cost which high efficiency. The design consists of two stages i.e. the DC-DC step up stage and a DC-AC Inverter stage. The DC-DC step up converter is based on a push-pull design to step 24VDC to 300VDC. Pulse width modulation was used i.e. the SG3525 pulse width Modulator. The DC-AC inverter stage comprised of four power mosfets in an H-bridge configuration, driven by a 40 kHz square wave encoded/modulated by a 50Hz sine wave that was derived from a TL084 quad op amp sine wave oscillator. An output voltage range of about 240-260VAC from 300VDC input was obtained. A low pass filter was used to filter out the high frequencies and thus isolate the harmonics so a 50 Hz fundamental frequency was retained.

Item Type: Article
Uncontrolled Keywords: Inverter; Sine wave; Oscillator; Transformer
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Physics
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 27 Mar 2018 15:30
Last Modified: 27 Mar 2018 15:30

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