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
A Super-Junction MOSFET-Based 99%+ Efficiency T-Type Multilevel Converter
TL;DR: In this paper, a combination of snubber circuitry and intrinsic diode deactivation circuitry for a three-level T-type converter is proposed to address the non-linear capacitance and poor intrinsic diodes issues.
Proceedings ArticleDOI
Investigation of Three-level Dual Output T-type NPC for EV Application
TL;DR: In this article , a three-level dual output voltage (TL-DOV) inverter is presented, which can generate low-ripple current waveforms with controllable amplitude, frequency and phases.
Proceedings ArticleDOI
Grid interconnection of renewable energy source with T-type inverter based DSTATCOM
TL;DR: The simulated response of the T-type inverter based DSTATCOM is show effective for injecting active power from photo voltaic system and the instantaneous reactive power theory based reference current estimation is presented with maximum power point (MPPT) tracking.
Journal ArticleDOI
A real-time digital twin approach on three-phase power converters applied to condition monitoring
Sérgio Diz,Roberto Martín López,Francisco Javier Rodriguez Sanchez,Edel Díaz Llerena,Emilio Jose Bueno Pena +4 more
TL;DR: In this paper , the authors describe a methodology based on the digital-twin concept applied to the condition monitoring of three-phase power electronics converters, which does not need additional hardware circuits or sensor calibration.
Journal ArticleDOI
Design and implementation of a series switching SPSI for PV cell to use in carrier based grid synchronous system
TL;DR: A carrier-based grid synchronous method is proposed to develop the system efficiency, phase and power quality of the inverter output waves, showing the phase error of 55% improvement, reduced 11% of THD and the conversion efficiency of 97.02% highly predicted by the proposed design technique to improve the microgrid system.
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.