Journal ArticleDOI
Phase-Shifted Carrier PWM Technique for General Cascaded Inverters
Roozbeh Naderi,Abdolreza Rahmati +1 more
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TLDR
In this paper, a modified PSC technique based on partly shifted carriers for all disposition types including phase disposition (PD) which is suitable for three-phase cascaded inverters was proposed.Abstract:
Phase-shifted carrier (PSC) pulsewidth modulation (PWM) in its conventional form is a good solution for single-phase Cascaded inverters as alternative phase opposition disposition (APOD) PWM for single-phase diode clamped inverters. PSC distributes the switching angles of APOD PWM waveform among the legs uniformly and reduces the switching frequency of each leg. This paper proposes a modified PSC technique based on partly shifted carriers for all disposition types including phase disposition (PD) which is suitable for three-phase cascaded inverters. Simulation results are also included for using carrier-based space-vector PWM (SVPWM).read more
Citations
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Multi-level conversion : high voltage choppers and voltage-source inverters
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.
Journal ArticleDOI
Multidimensional Modulation Technique for Cascaded Multilevel Converters
Jose I. Leon,Samir Kouro,Sergio Vazquez,R. Portillo,Leopoldo G. Franquelo,Juan Manuel Campos Carrasco,Jose Rodriguez +6 more
TL;DR: A simple and low-computational-cost modulation technique for multilevel cascaded H-bridge converters based on geometrical considerations considering a unidimensional control region to determine the switching sequence and the corresponding switching times is presented.
Journal ArticleDOI
A Transformerless Medium-Voltage STATCOM Topology Based on Extended Modular Multilevel Converters
TL;DR: In this article, a new transformerless four-leg topology is proposed for shunt compensation, the modular multilevel converters (MMC) based on the half-bridge converters, to achieve higher performance as a STATCOM in a distorted and unbalanced medium-voltage large-current (MV-LC) system.
Journal ArticleDOI
Analysis of the Phase-Shifted Carrier Modulation for Modular Multilevel Converters
TL;DR: In this article, a general implementation of the phase-shifted carrier (PSC) modulation with a capacitor voltage balancing method for MMC is first introduced, and the mathematical analysis of PSC modulation for the modular multilevel converter (MMC) is performed to identify the PWM harmonic characteristics of the output voltage and the circulating current.
Journal ArticleDOI
A Hybrid Cascade Converter Topology With Series-Connected Symmetrical and Asymmetrical Diode-Clamped H-Bridge Cells
TL;DR: In this article, a novel H-bridge multilevel pulsewidth modulation converter topology based on a series connection of a highvoltage diode-clamped inverter and a low-voltage conventional inverter is proposed.
References
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Journal ArticleDOI
Multilevel inverters: a survey of topologies, controls, and applications
TL;DR: The most important topologies like diode-clamped inverter (neutral-point clamped), capacitor-Clamped (flying capacitor), and cascaded multicell with separate DC sources are presented and the circuit topology options are presented.
Journal ArticleDOI
Analysis and realization of a pulsewidth modulator based on voltage space vectors
TL;DR: In this article, a space vector concept for deriving the switching times for pulsewidth-modulated voltage source inverters is compared with the conventional sinusoidal concept, which results in lower current harmonics and possibly a higher modulation index.
Multi-level conversion : high voltage choppers and voltage-source inverters
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.
Proceedings ArticleDOI
Multi-level conversion: high voltage choppers and voltage-source inverters
Thierry Meynard,Henri Foch +1 more
TL;DR: In this paper, a multilevel commutation cell is introduced for high-voltage power conversion, which can be applied to either choppers or voltage-source inverters and generalized to any number of switches.
Journal ArticleDOI
Multicarrier PWM strategies for multilevel inverters
TL;DR: A PWM method is developed for cascaded and hybrid inverters to achieve the same harmonic gains as phase disposition PWM achieves for diode-clamped inverters.