Journal ArticleDOI
A Survey on Neutral-Point-Clamped Inverters
TLDR
The basic operation and the most used modulation and control techniques developed to date of neutral-point-clamped inverters are presented and some technological problems such as capacitor balance and losses are presented.Abstract:
Neutral-point-clamped (NPC) inverters are the most widely used topology of multilevel inverters in high-power applications (several megawatts). This paper presents in a very simple way the basic operation and the most used modulation and control techniques developed to date. Special attention is paid to the loss distribution in semiconductors, and an active NPC inverter is presented to overcome this problem. This paper discusses the main fields of application and presents some technological problems such as capacitor balance and losses.read more
Citations
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Journal ArticleDOI
Transformer-based inverter with reduced number of switches for renewable energy applications
TL;DR: In this paper, a variable amplitude phase disposition PWM control method that is compatible with the proposed inverter is developed, and extended structure of the inverter and its new algorithm in generating all odd and even voltage levels are proposed.
Journal ArticleDOI
Review of Multilevel Voltage Source Inverter Topologies and Analysis of Harmonics Distortions in FC-MLI
TL;DR: In this article, the most common topology of multilevel inverters is reviewed, and the information about several multi-level inverters such as the diode-clamped multi-scale inverter (DC-MLI), cascaded H-bridge multi-layer inverter, and flying-capacitor multileve inverter with power systems CAD (PSCAD) simulation is presented.
Proceedings ArticleDOI
Pinned mid-points multilevel inverter (PMP): Three-phase topology with high voltage levels and one bidirectional switch
TL;DR: The proposed PMP multilevel inverter has fewer switches and clamping diodes than the Cascaded H-bridge and Neutral Point Clamped inverters, moreover it has less bidirectional switches in comparison with the BNPC.
Patent
Voltage source converter (VSC) with neutral-point-clamped (NPC) topology and method for operating such voltage source converter
TL;DR: A Voltage Source Converter (VSC) with Neutral-Point-Clamped (NPC) topology with one or more phases, comprises an intermediate DC circuit having at least a first and a second capacitance connected in series between a positive terminal and a negative terminal, providing a central tap terminal between both capacitances, and at least one sub-circuit for generating one phase of an alternating voltage, each subcircuit comprising an AC terminal for supplying a pulsed voltage as discussed by the authors.
Journal ArticleDOI
Improved SVPWM vector selection approaches in OVM region to reduce common-mode voltage for three-level neutral point clamped inverter
TL;DR: In this paper, the authors proposed PWM schemes for three level diode clamped multilevel inverter (DC-MLI) which use an unpretentious switching sequence to determine the triangle for maximum output voltage and minimum common mode voltage (CMV) in entire modulation range.
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.
A New Neutral-Point-Clamped PWM Inverter
TL;DR: In this article, a neutral-point-clamped PWM inverter composed of main switching devices which operate as switches for PWM and auxiliary switching devices to clamp the output terminal potential to the neutral point potential has been developed.
Journal ArticleDOI
A New Neutral-Point-Clamped PWM Inverter
TL;DR: The neutral-point-clamped PWM inverter adopting the new PWM technique shows an excellent drive system efficiency, including motor efficiency, and is appropriate for a wide-range variable-speed drive system.
Journal ArticleDOI
Multilevel Voltage-Source-Converter Topologies for Industrial Medium-Voltage Drives
TL;DR: This paper covers the high-power voltage-source inverter and the most used multilevel-inverter topologies, including the neutral-point-clamped, cascaded H-bridge, and flying-capacitor converters.
Journal ArticleDOI
Pulsewidth modulation-a survey
TL;DR: The author provides a guideline and quick reference for the practicing engineer to decide which methods should be considered for an application of a given power level, switching frequency, and dynamic response.