Quasi-Z-source cascaded H-bridge (qZS-CHB) inverters are arising as an innovation in the fieldof the electrical conversion for PV applications. This type of converters inherit the advantages ofmultilevel inverters and single-stage configuration. In this context, this paper proposes a novel symmetrical boost modulation strategy for qZS CHB multilevel inverters to increase the performance in terms of voltage stresses and power quality. The novelty lies in the adoption of a different concept to generate the shoot-through states compared to the traditional methods. Simulation analysis in a grid connected application to evaluate the benefits of this boost method is performed in the MATLAB/PLECS co-simulation platform.
Schettino G., Miceli R., Castiglia V., Viola F., Blaabjerg F., Yang Y. (2020). A Novel Symmetrical Boost Modulation Method for qZS-based CHB Inverters. In 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020 (pp. 1-7). Institute of Electrical and Electronics Engineers Inc. [10.1109/COMPEL49091.2020.9265660].
A Novel Symmetrical Boost Modulation Method for qZS-based CHB Inverters
Schettino G.;Miceli R.;Castiglia V.;Viola F.;
2020-01-01
Abstract
Quasi-Z-source cascaded H-bridge (qZS-CHB) inverters are arising as an innovation in the fieldof the electrical conversion for PV applications. This type of converters inherit the advantages ofmultilevel inverters and single-stage configuration. In this context, this paper proposes a novel symmetrical boost modulation strategy for qZS CHB multilevel inverters to increase the performance in terms of voltage stresses and power quality. The novelty lies in the adoption of a different concept to generate the shoot-through states compared to the traditional methods. Simulation analysis in a grid connected application to evaluate the benefits of this boost method is performed in the MATLAB/PLECS co-simulation platform.
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