Comparative Study of Single Phase Power Inverters Based on Efficiency and Harmonic Analysis

Mustafa Sacid Endiz*, Serafettin EREL**, Mustafa YAGCI***
* Research Assistant, Department of Electrical and Electronics Engineering, Necmettin Erbakan University, Turkey.
** Professor, Department of Electrical and Electronics Engineering, Yildirim Beyazit University, Turkey
*** Assistant Professor, Department of Electrical and Electronics Engineering, Necmettin Erbakan University, Turkey.
Periodicity:November - January'2016
DOI : https://doi.org/10.26634/jic.4.1.3773

Abstract

Today the expanding use of power inverters in the power electronics industry has increased the importance of applied inverter choosing with respect to the harmonic content and efficiency. Especially, harmonics are playing the most important role because sensitive electronic devices can be operated only with the clean power generated inverters. In this paper, comparative analysis of single phase power inverters regarding their output waveforms was performed. Square wave, modified square wave and true sine wave inverter circuits with 500W rated power were designed and analyzed using Proteus Professional spice program. This comparison was fulfilled in accordance with the circuit configuration, THD (Total Harmonic Distortion) and output efficiency. After simulation results, these inverter circuits were realized on PCB (Printed Circuit Board). The efficiency of the inverters was calculated using Extech true RMS (Root Mean Square) digital multimeter and THD values were measured using Fluke 435 Power Analyzer device. According to the experimental results, the finished true sine wave inverter circuit with about 7% THD and an efficiency of 80% has the most ideal output signal compared to the modified and square wave inverter circuits. To get a resembled sine wave, a low pass filter was designed and applied at the output of the true sine wave inverter circuit. With the help of this filter circuit, the harmonic content was reduced. Tests on resistive and inductive loads were carried out under laboratory conditions and output signals were observed using Tektronix digital storage oscilloscope. Test results and simulation outcomes were confirmed to each other.

Keywords

Power Inverters, Harmonic Analysis, Efficiency Analysis.

How to Cite this Article?

ENDIZ, M.S., EREL, S., and YAGCI, M. (2016). Comparative Study of Single Phase Power Inverters Based on Efficiency and Harmonic Analysis. i-manager’s Journal on Instrumentation and Control Engineering, 4(1), 1-9. https://doi.org/10.26634/jic.4.1.3773

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