A new multilevel PWM method: a theoretical analysis
作者： G. Carrara , S. Gardella , M. Marchesoni , R. Salutari , G. Sciutto
DOI: 10.1109/63.145137
关键词:
摘要: A generalization of the PWM (pulse width modulation) subharmonic method for controlling single-phase or three-phase multilevel voltage source inverters (VSIs) is considered. Three techniques VSI are presented. An analytical expression spectral components output waveforms covering all operating conditions derived. The analysis based on an extension Bennet's method. improvements in harmonic spectrum pointed out, and several examples presented which prove validity modulation. Improvements contents were achieved due to increased number levels. >
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