Results 191 to 200 of about 5,475 (232)

Research on High-Voltage Large-Capacity Modular Multilevel Converter (MMC) System

2012 Second International Conference on Intelligent System Design and Engineering Application, 2012
Modular multilevel converter (MMC) is a newly introduced topology of multilevel converter with six arms, each of which is formed by a series connection of several chopper-cells and an inductor. This paper first analyzes the topology and working principle of high-voltage large-capacity MMC.
Jianfei Zhao, Chun Gao, Kai Cao, Xingwu Yang, Wenzhe Mao, Jianguo Jiang   +5 more
openaire   +2 more sources

A generic virtual prototyping tool for multilevel modular converters (MMCs)

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 2015
In this article, a generic virtual prototyping tool to optimize Modular Multilevel Converters (MMCs) is proposed. The aim is to optimize the components of MMC. Moreover, the geometry of the arm inductor is proposed and its geometric variables are optimized.
Sokchea Am, Pierre Lefranc, David Frey, Mahmoud Ibrahim   +3 more
openaire   +1 more source

Reliability-oriented switching frequency analysis for Modular Multilevel Converter (MMC)

2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015
In this paper, reliability-oriented switching frequency analysis for Modular Multilevel Converter is investigated. In the medium voltage and high voltage direct current applications, the switching frequency should be low enough to avoid the converter from high switching power losses.
Vahid Najmi, Jun Wang, Rolando Burgos, Dushan Boroyevich   +3 more
openaire   +1 more source

Device loading of modular multilevel converter MMC in wind power application

2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA), 2014
Modular multilevel converter (MMC) is a recently emerged multilevel topology for high-voltage high-power applications. However, in wind power application the performance of the MMC has not been deeply investigated. In this paper the application of MMC in wind energy systems is studied.
L. Popova, J. Pyrhonen, K. Ma, F. Blaabjerg   +3 more
openaire   +2 more sources

Optimal Control of Modular MultiLevel Converters (MMCs) for Minimum Storage Requirement

IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018
With the push towards Medium Voltage DC (MVDC) based electrical distribution systems, the power converter(s) between Medium Voltage AC generators and common MVDC buses must handle more power than any other electrical power conversion component in the distribution system. The Modular Multi-Level Converter (MMC) is a compelling topology for this function
Marzieh Karami, Robert M. Cuzner
openaire   +1 more source

Protecting modular multilevel converters (MMC) against ac fault by deadbeat control

2013 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2013
The paper shows that deadbeat control and harmonic elimination by feedforward and feedback can be implemented by MMC. In tracking the current reference, MMC is: (i) safe from large destructive of ac faults; (ii) free from the odd harmonics generated by the nonlinearities of MMC. As deadbeat control cannot filter the even harmonics on the dc side, their
Can Wang, B. T. Ooi
openaire   +1 more source

Slides - Modular Multilevel Converter (MMC) for Traction Applications

2017
TEC Webinar ...
openaire   +1 more source

Modular Multilevel Converter (MMC) for Traction Applications Slides

2017
Since its initial conception, the transformer has been used in the most diverse applications where insulation and adaptation of voltage levels are demanded. In fact, this device is widely employed either directly or indirectly in all electric engineering fields due its simple design for distinct power and voltage conversion levels.
openaire   +1 more source

A novel capacitor voltage balancing control strategy for modular multilevel converters (MMC)

2013 International Conference on Electrical Machines and Systems (ICEMS), 2013
Recently modular multilevel converters are highly attractive for medium, high-voltage power transition and electrical machine drive. Capacitor voltage sorting is very important for capacitor voltage-balancing control. This paper describes a novel sorting algorithm for capacitor voltage of modular multilevel converters (MMC).
null Lin Wang, null Ping Wang, null Zixin Li, null Yaohua Li   +3 more
openaire   +1 more source

Efficient Grounding for Modular Multilevel HVDC Converters (MMC) on the AC Side

IEEE Transactions on Power Delivery, 2014
An unbalance voltage between a positive pole and negative pole will exist for a long time in an ungrounded modular multilevel converter (MMC) HVDC transmission system. A zig-zag transformer has been proposed to construct an artificial neutral point and keep voltage balance between the positive pole and the negative pole.
Haitian Wang, Guangfu Tang, Zhiyuan He, Jie Yang   +3 more
openaire   +1 more source