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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A New Hybrid Multilevel Inverter Topology With Level Shifted Multicarrier PWM Technique for Harvesting Renewable Energy
Md. Halim Mondol,Shuvra Prokash Biswas,Md. Ashib Rahman,Md. Rabiul Islam,A. M. Mahfuz-Ur-Rahman,Kashem M. Muttaqi +5 more
TL;DR: In this paper , a new hybrid three-phase cascaded modular multilevel inverter with a reduced switch count concept for harvesting renewable energy is presented, which can generate six positive voltage states, which are negatively polarized by the end-side H-bridge unit.
Proceedings ArticleDOI
A common-mode voltage reduction method for a back-to-back four-level hybrid-clamped converter
TL;DR: In this article, a back-to-back four-level hybrid-clamped (4L-HC) converter is proposed to balance the DC-link capacitor voltages of this topology and then the common-mode voltage is also affected.
Proceedings ArticleDOI
Multilevel inverter with reduced number of switches
TL;DR: In this paper, a multilevel inverter topology with reduced number of switches is discussed, where sinusoidal pulse width modulation (SPWM) is used to produce a seven level output voltage.
Proceedings ArticleDOI
Power density investigations for the large wind turbines' grid-side press-pack IGBT 3L-NPC-VSCs
TL;DR: In this article, a grid-side medium voltage full-scale voltage source converters (VSCs) in a multi-MW wind turbine, press-pack IGBT three-level neutral-point-clamped VSC (3L-NPC-VSC), 3L active NPP-vSC, and 3L-ANPC VSC are characterized in terms of converter operating principles, physical structure, power loss, and DC bus capacitor size for establishing the basis for converter electrothermal modeling.
Proceedings ArticleDOI
Super-Twisting Sliding Mode Control for Grid-Tied T-Type qZSI with Reduced Capacitor Voltage
Hasan Komurcugil,Sertac Bayhan +1 more
TL;DR: The proposed super-twisting sliding mode control (ST-SMC) strategy for a three-phase grid-tied three-level T-type quasi-Z-source inverter (qZSI) with LCL filter controls the grid current successfully without using a special active damping method.
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.