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
More filters
Journal ArticleDOI
Low Complexity Finite-Control-Set MPC Based on Discrete Space Vector Modulation for T-Type Three-Phase Three-Level Converters
TL;DR: In this article , a low complexity finite-control-set model predictive control (FCS-MPC) based on the discrete space vector modulation (DSVM) is proposed for T-type three-phase three-level (3P-3L) converters.
Journal ArticleDOI
Active Modulation Strategy for Capacitor Voltage Balancing of Three-Level Neutral-Point-Clamped Converters in High-Speed Drives
TL;DR: In this paper , the authors established the equivalent relationship between the nearest-three virtual space vector and carrier-based pulsewidth-modulation scheme based on space vector coordinate for a three-level neutral-point-clamped (3L-NPC) converter.
Journal ArticleDOI
Three-Level F-Type Inverter
TL;DR: In this paper, a reconfigured four-switch per phase-leg power circuit for a 3-level inverter (F-type) was presented, where the common node of the bidirectional switch in the T-type inverter was explored to have only one power switch rated at input dc voltage and three switches rated at half the voltage per inverter leg This reduced voltage stress has inverter cost and loss implications.
Proceedings ArticleDOI
Space vector modulation for three-level simplified neutral point clamped (3L-SNPC) inverter
TL;DR: In this paper, a Space Vector Modulation (SVM) for the 3L-SNPC inverter is introduced, and the neutral point balancing capability of the inverter was compared with conventional 3l-NPC topologies.
Proceedings ArticleDOI
Control of a four-level active neutral point clamped converter with neutral point voltage balance
Bosen Jin,Xibo Yuan +1 more
TL;DR: In this paper, a carrier-based modulation method with optimal zero-sequence signal injection has been devised to modulate the converter and regulate the DC-link neutral points' voltages of a four-level active neutral point clamped (ANPC) converter.
References
More filters
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.