Results 181 to 190 of about 8,959 (234)

A new diode-clamp cascade multilevel converter

IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468), 2004
Cascade and diode-clamp voltage source converter have become increasingly popular in recent years due to their practicability. This paper will present a new diode-clamp cascade multilevel converter that is derived from these two topologies. The new concept of the novel diode-clamp cascade converter is based on the connection of multiple three-level ...
null Kai Ding, null Yun-ping Zou, null Zhan Wang, null Zhi-chao Wu, null Yun Zhang   +4 more
openaire   +1 more source

Voltage-balancing strategies for diode-clamped multilevel converters

2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
This paper explores space-vector modulation strategies for diode-clamped multilevel converters. The analysis is focused on the voltage-balancing issue, since this is a very difficult task in high-order multilevel converters. Two strategies for selecting redundant vectors in the space-vector diagram are explained; both of them are based on minimizing a ...
J. Pou, R. Pindado, D. Boroyevich, P. Rodriguez, J. Vicente   +4 more
openaire   +1 more source

A Novel Inductor Based Balancing Circuit for Diode Clamped Converters

IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018
The paper proposes a new balancing circuit for multilevel diode clamped converters (DCC) aimed to keep the DC-Link voltages balanced, regardless of the converter operating condition. The proposed architecture, which is based on the same topology of a DCC leg, is connected to an external inductor and is driven by a specialized modulation technique ...
Brando G., Cervone A.
openaire   +2 more sources

A matrix converter without diode clamped over-voltage protection

Proceedings IPEMC 2000. Third International Power Electronics and Motion Control Conference (IEEE Cat. No.00EX435), 2002
In this paper, the design and testing of a new protection strategy for a matrix power converter feeding an induction motor is described. The new protection strategy, with excellent overvoltage protection, allows to remove the large and expensive diode clamp.
Mahlein, Jochen, Braun, Michael
openaire   +1 more source

Voltage Balancing in Five-Level Diode-Clamped Power Converters

IFAC Proceedings Volumes, 2013
Abstract This paper addresses the voltage imbalance problem of the dc-link capacitors in multilevel power converters. Considering the five-level diode-clamped converter, a mathematical analysis of the capacitor voltage difference dynamics is carried out.
Francisco Umbría, Fabio Gómez-Estern, Francisco Gordillo, Francisco Salas   +3 more
openaire   +1 more source

Snubber circuit for diode-clamped four-levelinverter and converter

IEE Proceedings - Electric Power Applications, 2001
The snubber circuit makes use of Undeland and McMurray snubbers in the basic snubber unit, and can be regarded as a generalised combined Undeland and McMurray snubber. The proposed snubber features fewer components, improved efficiency due to low snubber loss, overvoltage clamping across main switching devices, and no imbalance problem of the blocking ...
I.-D. Kim, E.-C. Nho, J.-S. Ko
openaire   +1 more source

Multilevel Circuit Topologies Based on the Switched-Capacitor Converter and Diode-Clamped Converter

IEEE Transactions on Power Electronics, 2011
The novel multilevel circuit topologies are proposed in this paper. They are called multilevel circuit topologies based on switched-capacitor and diode-clamped converters (MCT-BSD). The topology structure and the operation principle, including the working states' transitions of the diode-clamped part, the voltages balancing mechanism of the dc link ...
Jing Zhao, Yunlong Han, Xiangning He, Cheng Tan, Jun Cheng, Rongxiang Zhao   +5 more
openaire   +1 more source

Transformerless distribution voltage restorer using diode-clamped three-level converter

2014 International Electrical Engineering Congress (iEECON), 2014
This paper presents development distribution voltage restorer (DVR) using three-level diode-clamped converter for creating voltage to compensate using power electronics switching device. Converter is controlled the injection voltage by using voltage regulations without transformer connected to the power system.
Wuthikrai Chankhamrian, Krischonme Bhumkittipich, Nathabhat Phankong   +2 more
openaire   +1 more source

A Sparse Multilevel Matrix Converter Based on Diode-Clamped Topology

2007 IEEE Industry Applications Annual Meeting, 2007
This paper presents a novel sparse matrix converter configuration that needs no bulky energy storage capacitors or inductors, and employs only unidirectional power semiconductor switches. The source side bridge is switched at the line frequency and therefore, this allows the use of the low speed high power rating switches.
S. Ali Khajehoddin, Alireza Bakhshai, Praveen Jain   +2 more
openaire   +1 more source

Diode-clamped multilevel converter topology for battery cells charging applications

2013 IEEE Energytech, 2013
A new charger control strategy for optimum charging of individual battery cells is proposed. The charger can directly charge individual battery cells based on their state-of-charge (SOC) using multilevel converter topology. In multilevel converter, individual cells are connected in series on the DC side of the converter.
Aparna Saha, Yilmaz Sozer
openaire   +1 more source