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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Book ChapterDOI
An Overview of Aircraft Electric Power System for Sustainable Aviation
Journal ArticleDOI
Neutral point voltage balance and surge voltage reduction for three-level converters in PMSM starting process based on narrow pulse suppression
Proceedings ArticleDOI
An Improved Predictive Control for T-Type 3L Active-Front-Ends with LCL Filters: a Full State-Variable Feedback Solution
TL;DR: In this paper, an improved Finite Control-Set Model Predictive Control (FCS-MPC) is proposed for three-level power converters, which takes the full state variables into account that realizes active damping control and harmonic elimination.
Proceedings ArticleDOI
A comparative study of multilevel topologies using Finite Set Model Predictive Control
Wassim Boudja,Kamel Barra +1 more
TL;DR: The results of these three level inverters are obtained via simulation and compared basing on the power quality criteria such as the output voltage and current qualities, THD content, the complexity of the power circuit and the cost.
Proceedings ArticleDOI
A Six-Level T-Type ANPC Inverter for Medium-Voltage Applications
Jonathan Pribadi,Dong-Choon Lee +1 more
TL;DR: In this article, a six-level T-type Active Neutral-Point-Clamped (6L-TANPC) inverter has been proposed to increase the number of level, flexibility of increasing the operating voltage and reduction of device count compared to the existing similar type of converters.
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.