PROJECT TITLE :
Criteria-Based Modulation for Multilevel Inverters
Pulse width modulation schemes are aimed toward adjusting the fundamental part whereas reducing the harmonic content of an inverter output voltage or current. This paper addresses the topic of optimal inverter operation in reference to a given objective function. The objective operate may embody either one performance criterion, such as voltage or current total harmonic distortion (THD), or a weighted add of multiple criteria. The proposed technique ensures primacy of the chosen solution while imposing no restriction over its modulation index. In explicit, operating the inverter by the chosen resolution would result in performances superior to any different modulation scheme commutating in an equal variety of switching angles per basic cycle. The proposed technique permits for the thought of practical inverter constraints and prevents the likelihood of impractical switching sequence. An in depth investigation of the tactic is given, accompanied by two practical cases minimizing, respectively, part-voltage THD and line-current THD of a three-level inverter. Selected simulation and experimental results are presented to validate the theoretical half.
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