NEW TOPOLOGY FOR SINGLE-PHASE, THREE-LEVEL, SPWM VSI WITH LC FILTER

CI Odeh; MU Agu

doi:10.4314/njt.301.55

NEW TOPOLOGY FOR SINGLE-PHASE, THREE-LEVEL, SPWM VSI WITH LC FILTER

Authors

CI Odeh Department of Electrical Engineering, University of Nigeria, Nsukka.
MU Agu Department of Electrical Engineering, University of Nigeria, Nsukka.

DOI:

https://doi.org/10.4314/njt.301.55

Keywords:

SPWM inverter, Frequency, single-phase, Harmonics

Abstract

Multilevel inverters that provide more than two levels of voltage to achieve less distorted dc-ac conversion have attracted many contributors. This paper presents a new simplied topology for single-phase, sinusoidal pulse width modulated (SPWM) three-level SPWM voltage source inverter (VSI) with LC filter. To keep the power circuit component count to a minimum, the proposed three-level topology simplies the conventional three-level inverter conguration to that of a full-bridge, two-level inverter, with only one added auxiliary power switch. Operational principles, with switching functions are analyzed. The performance characteristics of the proposed inverter are predicted using simulation process in simplorer schematic environment. Assessment of the proposed inverter is done by comparing it with the conventional single-phase, two and three level SPWM inverter under the conditions of identical supply dc voltage, switching frequency
and loading.

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Issue

Vol. 30 No. 1 (2011)

Section

Research papers of General Interest

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How to Cite

NEW TOPOLOGY FOR SINGLE-PHASE, THREE-LEVEL, SPWM VSI WITH LC FILTER. (2009). Nigerian Journal of Technology, 30(1), 91-99. https://doi.org/10.4314/njt.301.55