Results 221 to 230 of about 17,156 (263)

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

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

An Asymmetric Hybrid Phase-Leg Modular Multilevel Converter With Small Volume, Low Cost, and DC Fault-Blocking Capability

IEEE transactions on power electronics
Hybrid modular multilevel converters (MMCs) have exhibited superior power density and cost-effectiveness than the conventional half-bridge submodule-based MMC (HB-MMC), while still maintaining the hassle of using high-voltage dc supporting capacitors or ...
Rui Zhang, Shunliang Wang, Junpeng Ma, Yajie Jiang, Peng Wang, Tianqi Liu, Yun Yang   +6 more
semanticscholar   +1 more source

An Embedded DC Power Flow Controller Based on Full-Bridge Modular Multilevel Converter

IEEE transactions on industrial electronics (1982. Print)
Meshed dc grids help improve the current network's configuration, flexible power management, and reliable power supply. However, the existing power converters implemented in dc grids do not have enough controllability in adjusting each feeder's power ...
Jianwen Zhang, Yuwen Liu, J. Zang, Zichen Liu, Jianqiao Zhou, Jiacheng Wang, G. Shi   +6 more
semanticscholar   +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

Arm Balance Control Scheme of Novel Isolated Modular Multilevel Converter (I-MMC)

2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), 2019
This paper introduces an isolated modular multilevel converter (I-MMC) structure which can transport the energy power from LVDC to HVDC and HVAC with single-stage, and the arm balance control strategy. The paper also analyzes the reason of leading to the unbalance in arm, establish the relevant model, and propose the unbalance control strategy of the ...
Lin Lin, Qi Chen, Xingang Wu, Chuang Liu, Jinming Li, Dehao Kong   +5 more
openaire   +1 more source