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
Crisscross switched multilevel inverter using cascaded semi-half-bridge cells
N. Arun,Mathew Mithra Noel +1 more
TL;DR: A new cascaded multilevel inverter is presented with the aim of utilising lesser number of switches, better modularity and reduced voltage stress, and the MATLAB R2013b-based simulation results along with the experimental results validate the proposed topology.
Journal ArticleDOI
Investigation of a Fault-tolerant Three-level T-type Inverter System
TL;DR: In this paper, a fault-tolerant three-level T-type inverter is proposed, where redundant fourth-leg is used to balance neutral-point voltage and the low-frequency voltage oscillation is eliminated completely.
Journal ArticleDOI
On the Concept of the Multi-Source Inverter for Hybrid Electric Vehicle Powertrains
TL;DR: In this article, the authors proposed a multi-source inverter topology that can drive a traction motor from variable DC voltages without the use of an additional power converter, and its different operating modes are determined through the study of the inverter circuit, and closed-loop control simulations and experiments with a scaleddown prototype and an induction motor were performed to validate the effectiveness of the proposed topology and concept.
Journal ArticleDOI
A Multilevel Active-Clamped Converter Topology—Operating Principle
TL;DR: This paper presents a novel multilevel active-clamped converter topology, which is an extension to m levels of the three-level active neutral-point-Clamped topology and establishes the operating principle through the definition of a proper set of switching states.
Journal ArticleDOI
7-kV 1-MVA SiC-Based Modular Multilevel Converter Prototype for Medium-Voltage Electric Machine Drives
Jianyu Pan,Ziwei Ke,Muneer Al Sabbagh,He Li,Karun Potty,Will Perdikakis,Risha Na,Julia Zhang,Jin Wang,Longya Xu +9 more
TL;DR: This article presents the design and development of a 7-kV dc bus, 1-MVA, 0–1000 Hz modular multilevel converter (MMC) prototype for high speed medium-voltage variable frequency drives and demonstrates the performance of both the SiC-based submodule and the full-scale MMC system.
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.