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
Control strategies for induction motors in railway traction applications
Ahmed Fathy Abouzeid,Juan Manuel Guerrero,Aitor Endemano,Iker Muniategui,David Ortega,Igor Larrazabal,Fernando Briz +6 more
TL;DR: This paper will focus on drives operating with a low switching to fundamental frequency ratio and in the overmodulation region or six-step operation, as these are the most challenging cases.
Journal ArticleDOI
An Improved Phase-Shifted Carrier Modulation for Modular Multilevel Converter to Suppress the Influence of Fluctuation of Capacitor Voltage
Ming Huang,Jianlong Zou,Xikui Ma +2 more
TL;DR: In this paper, an improved phase-shifted carrier (PSC) pulse width modulation (PWM) for the MMC is presented to suppress the influence of the fluctuation of the sub-module (SM) capacitor voltage.
Journal ArticleDOI
A step-up switched-capacitor multilevel inverter based on 5-level T-type modules
TL;DR: In this paper, a new transformerless step-up multilevel inverter structure with a single DC source was presented, which was based on cascaded connection of bipolar T-type 5-level modules.
Journal Article
Particle swarm optimisation-based modified SHE method for cascaded H-bridge multilevel inverters
TL;DR: In this article, the authors proposed to enhance the output waveform of cascaded H-bridge inverters by deploying additional degree of freedom in the equation set, which contributes to effectively doubling the number of variables.
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.