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
Hybrid-Source Impedance Networks: Layouts and Generalized Cascading Concepts
TL;DR: In this paper, the authors proposed a hybrid-source impedance network (HSSN) which can be combined into two generic network entities, before multiple of them can further be connected together by applying any of the two generalized cascading concepts.
Journal ArticleDOI
A Family of Five-Level Dual-Buck Full-Bridge Inverters for Grid-Tied Applications
TL;DR: In this article, a series-switch five-level DBFBI topology was proposed to improve the power efficiency of dual-buck inverters by combining a conventional three-level full-bridge inverter, a two-level capacitive voltage divider, and a neutral point clamped branch.
Journal ArticleDOI
A Novel Six-Level Inverter Topology for Medium-Voltage Applications
Quoc Anh Le,Dong-Choon Lee +1 more
TL;DR: The proposed topology can reduce the number of devices, components, and isolated sources compared with the existing ones in the case of the same number of output voltage steps, which result in a reduction of the size and weight of the inverters.
Journal ArticleDOI
An analytical literature review of stand-alone wind energy conversion systems from generator viewpoint
Zuher Alnasir,Mehrdad Kazerani +1 more
TL;DR: In this paper, the authors provide an analytical review of wind turbine-generator systems for stand-alone applications, focusing on variable-speed wind turbines, as the future trend in wind energy conversion, in contrast with the traditional fixed speed wind turbines.
Journal ArticleDOI
Thermal optimised modulation methods of three-level neutral-point-clamped inverter for 10 MW wind turbines under low-voltage ride through
Kwan-Liu Ma,Frede Blaabjerg +1 more
TL;DR: In this paper, the authors investigated the thermal performance of a 10MW 3L-NPC wind power inverter under low-voltage ride through (LVRT) conditions and proposed a new space vector modulation method to optimize the thermal distribution.
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.