Journal ArticleDOI
Design and Implementation of a Highly Efficient Three-Level T-Type Converter for Low-Voltage Applications
Mario Schweizer,Johann W. Kolar +1 more
TLDR
The 3LT2C as mentioned in this paper combines the positive aspects of the two-level converter such as low conduction losses, small part count and a simple operation principle with the advantages of the three-level converters such as the low switching losses and superior output voltage quality.Abstract:
The demand for lightweight converters with high control performance and low acoustic noise led to an increase in switching frequencies of hard switched two-level low-voltage 3-phase converters over the last years. For high switching frequencies, converter efficiency suffers and can be kept high only by employing cost intensive switch technology such as SiC diodes or CoolMOS switches; therefore, conventional IGBT technology still prevails. In this paper, the alternative of using three-level converters for low-voltage applications is addressed. The performance and the competitiveness of the three-level T-type converter (3LT2C) is analyzed in detail and underlined with a hardware prototype. The 3LT2 C basically combines the positive aspects of the two-level converter such as low conduction losses, small part count and a simple operation principle with the advantages of the three-level converter such as low switching losses and superior output voltage quality. It is, therefore, considered to be a real alternative to two-level converters for certain low-voltage applications.read more
Citations
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Proceedings ArticleDOI
Weighting Factorless Sequential Model Predictive Control Method with Fixed Switching Frequency for Five-Level T-type Photovoltaic Inverters
Mokhtar Aly,Fernanda Carnielutti,Ahmed Shawky,Emad M. Ahmed,Margarita Norambuena,Samir Kouro,Jose Rodriguez +6 more
TL;DR: In this article, an improved sequential model predictive control (MPC) method for single phase photovoltaic (PV) applications is presented, which eliminates the weighting factors, which represent critical element in applying classical MPC methods.
Journal ArticleDOI
A Simplified Hard-Switching Loss Model for Fast-Switching Three-Level T-Type SiC Bridge-Legs
TL;DR: In this article , a simplified approach to estimate a lower bound for the hard switching losses of 3LTT bridge-legs is presented, which is applicable to other three-level topolgies as well.
Proceedings ArticleDOI
A Novel Floating Capacitor Voltage Control Technique for 9-Level T-Type Inverter with Reduced Device Count
TL;DR: A novel carrier based modulation technique is proposed here to address the issue of lack of pole voltage redundancies in a three-phase 9-level multilevel inverter using single dc source and reduced device count.
Journal ArticleDOI
Feasibility Study GaN Transistors Application in the Novel Split-Coils Inductive Power Transfer System with T-Type Inverter
Viktor Shevchenko,Bohdan Pakhaliuk,Oleksandr Husev,Oleksandr Veligorskyi,Deniss Stepins,Ryszard Strzelecki +5 more
TL;DR: In this paper, the feasibility study of GaN transistor application in the wireless power transfer system based on the T-type inverter on the primary side is performed, and an analysis of power losses in the main components of the system is performed: semiconductors and magnetic elements.
Dissertation
Conception et optimisation d'Alimentations Sans Interruption
TL;DR: In this article, a methodologie d'optimisation multi-objectif and multi-convaintes is proposed to quantifier the performance atteintes par chacune d'elles.
References
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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
Recent Advances and Industrial Applications of Multilevel Converters
Samir Kouro,Mariusz Malinowski,K. Gopakumar,Josep Pou,Leopoldo G. Franquelo,Bin Wu,Jose Rodriguez,Marcelo A. Perez,Jose I. Leon +8 more
TL;DR: This paper first presents a brief overview of well-established multilevel converters strongly oriented to their current state in industrial applications to then center the discussion on the new converters that have made their way into the industry.
Journal ArticleDOI
The active NPC converter and its loss-balancing control
T. Bruckner,S. Bernet,H. Guldner +2 more
TL;DR: A loss-balancing scheme is introduced, enabling a substantially increased output power and an improved performance at zero speed, compared to the conventional NPC VSC.
Journal ArticleDOI
Influence of the modulation method on the conduction and switching losses of a PWM converter system
TL;DR: In this paper, the authors explore the dependency of the conduction losses of a bridge leg of a PWM power converter system with a high pulse rate on the shape of the phase modulation functions.