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
Modulation Methods for 3L-NPC Converter Power Loss Management in STATCOM Application
Jiuyang Zhou,Po-Tai Cheng +1 more
TL;DR: A novel carrier-based modulation technique is proposed to balance the power loss distribution and reduce the power losses in the most stressed device and an active neutral-point voltage balancing control strategy is proposed based on the proposed modulation scheme.
Journal ArticleDOI
Improving DC-Link Capacitor Lifetime for Three-Level Photovoltaic Hybrid Active NPC Inverters in Full Modulation Index Range
TL;DR: In this article, a dc-link capacitor lifetime improvement method for three-level photovoltaic hybrid active neutral-point clamped inverters in full modulation index range is presented, where the modulation index ranges are divided into two regions, namely medium vector modulation and hybrid modulation region.
Proceedings ArticleDOI
An attempt to improve output voltage quality of developed multi-level inverter topology by increasing the number of levels
Seyyed Hossein Hosseini,Kazem Varesi,Jaber Fallah Ardashir,Amin Ashraf Gandomi,Saeid Saeidabadi +4 more
TL;DR: In this paper, an improved Cascaded Multi-Level Inverter (CMLI) topology which can be "symmetric" or "asymmetric") is proposed.
Journal ArticleDOI
Capacitor Voltage Balancing and Stabilization for 4-Level Hybrid-Clamped Converter Using Selected Switching States
TL;DR: A new capacitor voltage balancing and stabilizing method to minimize the dc-link and flying capacitor voltage fluctuations and greatly enhance the robustness and reliability of a 4L-HCC is proposed.
Journal ArticleDOI
A PWM Current Source-Based DC Transmission System for Multiple Wind Turbine Interfacing
TL;DR: In this article, a pulsewidth modulation (PWM) current source wind energy conversion system based on a parallel configuration for high voltage direct current application is proposed, which can effectively control the average dc-link voltage with a feed-forward loop.
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.