NDLI: The design and analysis of a 5-level cascaded voltage source inverter with low THD

Content Provider	IEEE Xplore Digital Library
Author	Colak, I. Kabalci, E. Bayindir, R. Sagiroglu, S.
Copyright Year	2009
Description	Author affiliation: Department of Electrical Education, Faculty of Technical Education, Gazi University, Besevler, Ankara 06500, Turkey (Colak, I.) \|\| Gazi Electrical Machines and Energy Control (GEMEC) Group, Turkey (Bayindir, R.; Sagiroglu, S.) \|\| Department of Technical Programs, Vocational Collage of Haci Bektas, Nevsehir University, Hacibektas, Turkey (Kabalci, E.)
Abstract	Multilevel inverters have been important devices developed in recent years, owing to their capability to increase the voltage and power delivered to the load. Researches done based on basic inverter topologies show that, multilevel inverters have many advantages such as low power dissipation on power switches, low harmonic and low electromagnetic interference (EMI) outputs. A modified Sinusoidal Pulse Width Modulation (SPWM) modulator that reduces output harmonics is presented in this paper. The proposed modulation technique can be easily applied to any multilevel inverter topology carrying out the necessary calculations. The most common multilevel inverter topologies have been studied to define the best topology for SPWM modulation strategy. It is seen that cascaded H-bridges are the most convenient solution. The cascaded H-bridge cells have been constituted by IGBT semiconductors, and switched by the proposed 24-channel SPWM modulator to obtain 5-level output at the back-end of the 3-phase voltage source inverter (VSI). The designed H-bridge cells have a strong switching bandwidth up to 40 KHz, owing to its robustly designed modulator block. The proposed VSI in this paper also has a Total Harmonic Distortion ratio of output current (THDi) around at 0.1% without requiring any filtering circuit. The harmonic analysis of proposed design has been executed under several working conditions such as various switching frequencies and modulation indexes. The detailed comparisons have been performed to determine the best working conditions of VSI and presented in this paper.
Starting Page	575
Ending Page	580
File Size	331585
Page Count	6
File Format	PDF
ISBN	9781424446117
DOI	10.1109/POWERENG.2009.4915185
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-18
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation inverters Employee welfare Space vector pulse width modulation Electromagnetic interference Voltage Pulse width modulation Power system harmonics Topology Power dissipation Power harmonic filters
Content Type	Text
Resource Type	Article

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