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A New Unequal DC link Voltage Configuration for a Single Phase Multilevel Converter to Reduce Low Order Harmonics
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| Author(s) |
Negareh GHASEMI, Firuz ZARE, Christian LANGTON, Arindam GHOSH |
| Abstract |
Multilevel converters are used in high power and high voltage applications due to their attractivebenefits in generating high quality output voltage. Increasing the number of voltage levels can lead toa reduction in lower order harmonics. Various modulation and control techniques are introduced formultilevel converters like Space Vector Modulation (SVM), Sinusoidal Pulse Width Modulation(SPWM) and Harmonic Elimination (HE) methods. Multilevel converters may have a DC link withequal or unequal DC voltages. In this paper a new modulation technique based on harmonicelimination 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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| Filename: | 0093-epe2011-full-15005490.pdf |
| Filesize: | 883.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2012-01-26 by System |
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