article

A new multilevel PWM method: a theoretical analysis

IEEE Transactions on Power Electronics · 1992 · Vol. 7(3) · pp. 497–505

Giuseppe Raffaello Carrara✉(University of Pisa)S. Gardella(Forestry and Forest Products Research Institute)Mario Marchesoni(University of Genoa)R. Salutari(University of Pisa)G. Sciutto(University of Genoa)

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Abstract

Generalization of the pulsewidth modulation (PWM) subharmonic method to control single-phase or three-phase multilevel voltage source inverters (VSI) is considered. An analytical expression of the spectral components of the output waveforms covering all the operating conditions is derived. The analysis is based on an extension of Bennet's method. The improvements in harmonic spectrum are pointed out, and several examples are presented, which prove the validity of the multilevel modulation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>

Multilevel Inverters and Converters Microgrid Control and Optimization HVDC Systems and Fault ProtectionPulse-width modulationWaveformModulation (music)GeneralizationHarmonic analysisTopology (electrical circuits)Computer scienceHarmonicElectronic engineeringVoltage

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Novel multilevel inverter carrier-based PWM method