A new unequal DC link voltage configuration for a single phase multilevel converter to reduce low order harmonics

Ghasemi, Negareh, Zare, Firuz, Langton, Christian, & Ghosh, Arindam (2011) A new unequal DC link voltage configuration for a single phase multilevel converter to reduce low order harmonics. In Proceedings of the 14th European Power Electronic (EPE) Conference, The International Convention Centre, Birmingham.

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Multilevel converters are used in high power and high voltage applications due to their attractive benefits in generating high quality output voltage. Increasing the number of voltage levels can lead to a reduction in lower order harmonics. Various modulation and control techniques are introduced for multilevel converters like Space Vector Modulation (SVM), Sinusoidal Pulse Width Modulation (SPWM) and Harmonic Elimination (HE) methods. Multilevel converters may have a DC link with equal or unequal DC voltages. In this paper a new modulation technique based on harmonic elimination method is proposed for those multilevel converters that have unequal DC link voltages. This new technique has better effect on output voltage quality and less Total Harmonic Distortion (THD) than other modulation techniques. In order to verify the proposed modulation technique, MATLAB simulations are carried out for a single-phase diode-clamped inverter.

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ID Code: 41837
Item Type: Conference Paper
Refereed: Yes
Keywords: Multilevel converters, Modulation strategy, Harmonics, Renewable energy systems
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Schools > Physics
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2011 [please consult the authors]
Deposited On: 30 May 2011 23:02
Last Modified: 21 Jun 2011 23:12

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