Journal ArticleDOI
Modular Multilevel Converters for HVDC Applications: Review on Converter Cells and Functionalities
Reads0
Chats0
TLDR
In this article, the principle of modularity is used to derive the different multilevel voltage and current source converter topologies for high-power dc systems, where the derived converter cells are treated as building blocks and are contributing to the modularity of the system.Abstract:
In this paper, the principle of modularity is used to derive the different multilevel voltage and current source converter topologies. The paper is primarily focused on high-power applications and specifically on high-voltage dc systems. The derived converter cells are treated as building blocks and are contributing to the modularity of the system. By combining the different building blocks, i.e., the converter cells, a variety of voltage and current source modular multilevel converter topologies are derived and thoroughly discussed. Furthermore, by applying the modularity principle at the system level, various types of high-power converters are introduced. The modularity of the multilevel converters is studied in depth, and the challenges as well as the opportunities for high-power applications are illustrated.read more
Citations
More filters
Journal ArticleDOI
An Improved Non-Unit Traveling Wave Protection Method With Adaptive Threshold Value and Its Application in HVDC Grids
TL;DR: A zero-sequence current fitting method is proposed to obtain parameters respectively reflecting fault impedance and fault distance that can fast and correctly identify the dc line faults and effectively improves the protection sensitivity in detecting high-impedance faults.
Proceedings ArticleDOI
Implementation of nearest level modulation for Modular Multilevel Converter
TL;DR: This paper has shown an implementation of the nearest level modulation for a six-level modular multilevel converter and the modulation has been tested in a high power six- level prototype of Modular Multilevel Converter.
Journal ArticleDOI
A Novel Traveling Wave Protection Method for DC Transmission Lines Using Current Fitting
TL;DR: In this article, the authors derived the expressions of the fault initial traveling wave at the end of the transmission line and derived the index coefficients for DC transmission lines, and then a novel traveling wave protection method was proposed using the obtained index coefficients.
Journal ArticleDOI
A Model Assisted Testing Scheme for Modular Multilevel Converter
TL;DR: In this article, a model assisted sub-module testing scheme for an MMC that can be used in any of the possible applications is proposed, which is capable of facilitating research and development exercises through examining the electromagnetic and electrothermal characteristics.
Journal ArticleDOI
A Modular Multilevel HVDC Buck–Boost Converter Derived From Its Switched-Mode Counterpart
Sunny H. Kung,Gregory J. Kish +1 more
TL;DR: This paper introduces a new dc–dc MMC for HVdc applications, which is derived from the classical buck–boost dc–DC converter, and shows the proposed topology has lower operating losses and a lower total magnetics rating in comparison to an MMC-based DAB solution for dc stepping ratios around unity.
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.
Proceedings ArticleDOI
Multilevel converters-a new breed of power converters
Jih-Sheng Lai,Fang Zheng Peng +1 more
TL;DR: This paper presents three multilevel voltage source converters: (1) diode-clamp, (2) flying-capacitors, and (3) cascaded-inverters with separate DC sources.
BookDOI
Wind Power in Power Systems
TL;DR: In this article, the authors focus on the generation of electricity from clean and renewable sources, and show that wind energy has become the world's fastest growing energy source, and that renewable energy is the most promising energy source.
Proceedings ArticleDOI
An innovative modular multilevel converter topology suitable for a wide power range
A. Lesnicar,Rainer Marquardt +1 more
TL;DR: In this article, a new multilevel converter topology suitable for very high voltage applications, especially network interties in power generation and transmission, is presented, and a suitable structure of the converter-control is proposed.
Related Papers (5)
An innovative modular multilevel converter topology suitable for a wide power range
A. Lesnicar,Rainer Marquardt +1 more