Multiband and Modified Time Based Hysteresis Current Controller for Single Phase Multilevel Inverters
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2015, Vol 5, Issue 3
Abstract
The unmatched dynamic response and wide command-tracking bandwidth of the hysteresis modulation for power electronic converters has been utilized in many power electronics application. The application of hysteresis modulation and the benefits of hysteresis modulation for twolevel converters are well known, but the implementation and analysis of this approach to multilevel converters is still under progress. In this paper, the different hysteresis modulation approaches, multiband and time based approach are implemented for a single phase multilevel converters. The procedure and connections of the proposed techniques are described and compared for tracking the reference signal in order to achieve an optimum switching action, better dynamic behavior and high precision. By using the proposed multilevel hysteresis modulation approaches, the advantages of using numerous available dc potentials in a multilevel inverter have been fully exploited. These hysteresis modulation approaches have been tested for tracking a current reference when applied to a five-level inverter. The corresponding simulation results are presented. This paper provides an useful outline and serves as a reference for the future expansion of hysteresis modulation for different multilevel converters.
Authors and Affiliations
Tamilselvan R , Padmathilagam V
Keywords
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