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
Single phase nine level inverter using single DC source supported by capacitor voltage balancing algorithm
Rathinam Marimuthu Sekar,Dhanaraj Nelson Jayakumar,Kaliamoorthy Mylsamy,Umashankar Subramaniam,Sanjeevikumar Padmanaban +4 more
TL;DR: A new single phase nine-level inverter using two capacitors and a single DC source is introduced using two control algorithms namely charging algorithm and discharging algorithm to eliminate Voltage imbalances in the capacitors.
Journal ArticleDOI
New improved three-phase hybrid multilevel inverter with reduced number of components
Saeid Saeidabadi,Amin Ashraf Gandomi,Seyed Hossein Hosseini,Mehran Sabahi,Yasser Ashraf Gandomi +4 more
TL;DR: The proposed multilevel inverter has lower number of insulated-gate bipolar transistors and gate drivers and subsequently requires a relatively simple control strategy for generating the desired output voltage.
Journal ArticleDOI
Low Switch Count Nine-Level Inverter Topology for Open-End Induction Motor Drives
Abhijit Kshirsagar,R. Sudharshan Kaarthik,K. Gopakumar,Loganathan Umanand,Kaushik Rajashekara +4 more
TL;DR: This paper presents a nine-level inverter topology for an open-end induction motor drive requiring only eight switches per phase, using two three- level inverters with two isolated dc links in a 3:1 ratio.
Journal ArticleDOI
An Overview of HVDC Technology
TL;DR: The objectives of the paper are to give a comprehensive overview of HVDC technology, its development, and present status, and to discuss its salient features, limitations and applications.
Journal ArticleDOI
A Redundant Unit to Form T-Type Three-Level Inverters Tolerant of IGBT Open-Circuit Faults in Multiple Legs
TL;DR: A redundant unit that can be shared across phases in a T-type three-level inverter topology to manage open-circuit faults in multiple legs can be tolerated simultaneously and the rated output capacity can be maintained during faulted operation.
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.