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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Fast Simulation Model of Voltage Source Converters With Arbitrary Topology Using Switch-State Prediction
TL;DR: In this article , the authors proposed a fast EMT simulation model for VSCs with arbitrary topology based on switch-state prediction, which avoids the iterative computation required to obtain a feasible switchstate combination in the traditional EMT simulators.
Journal ArticleDOI
A Figure of Merit for SiC MOSFET Power Modules to Achieve High-Power-Density Energy Conversion
TL;DR: In this paper , a power module figure of merit (PMFOM) is derived based on device switching behavior, considering the conduction and switching loss, parasitics from package layout, thermal resistance, and package area.
Journal ArticleDOI
Active Optimization Method for Power Loss Distribution in T-Type Three-Level Converter Under Half-Wave Symmetry SHEPWM
TL;DR: In this article , an active optimization method for T-type three-level converters was proposed to deal with the uneven power loss distribution under a relatively low switching frequency, and the constraint equations of half-wave symmetry selective harmonic elimination pulse width modulation (SHEPWM) were actively redesigned.
Proceedings ArticleDOI
A Comprehensive Control Scheme for CM Resonance Suppression and Current Quality Improvement with DPWM Method in ILCL-filtered Grid-connected Inverter
TL;DR: In this paper , a comprehensive control scheme is proposed to ensure the robust stability of the commonmode (CM) loop and improve current quality with high inverter's efficiency using discontinuous pulse width modulation (DPWM).
Proceedings ArticleDOI
A DPWM based Control Strategy to Integrate Photovoltaic System and Battery Storage using Grid Connected Three-level T-Type Inverter
TL;DR: In this paper, integration of photovoltaic (PV) system and battery storage is considered using Three-level T-Type inverter using proper tradeoff between inverter and grid so that inverter is automatically adapted with demand-power of grid.
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.