Imperial College London
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DrYunjieGu

Faculty of Engineering, Department of Electrical and Electronic Engineering

Lecturer in Power Systems
 
 
 
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Contact

 

yunjie.gu Website

 
 
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Location

 

1119Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Xiang:2018:10.1109/ECCE.2018.8558030,
author = {Xiang, X and Zhang, X and Chaffey, G and Gu, Y and Sang, Y and Green, T},
doi = {10.1109/ECCE.2018.8558030},
publisher = {IEEE},
title = {Analysis on circulating current frequency of chain-link modular multilevel DC-DC converters for low step-ratio high-power MVDC applications},
url = {http://dx.doi.org/10.1109/ECCE.2018.8558030},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - The    direct    chain-link    modular    multilevel    dc    converter  has  raised  great  interest  recently  in  medium/high-  voltage dc-dc conversion due to the high power device utilization and  lower  power  losses  than  the  front-to-front  configurations  of  modular  multilevel  converter.  This  paper  introduces  a  single-phase  chain-link  modular  multilevel  buck-boost  converter  for  medium   voltage   dc   applications   and   presents   an   analysis   methodology  on  its  internal  circulating  current  frequency.  Its  connection   and   comparison   with   the   classic   dc-ac   modular   multilevel converter are given first, and its dc and ac components are  analyzed  in  the  respective  equivalent  circuits.  Then,  the  derivation   methodology   for   the   proper   circulating   current   frequency with lowest internal reactive power is provided, which could minimize the current stress and decrease the power losses. Also,   this   method   can   be   directly   applied   in   the   derivative   topologies and further configurations to satisfy various conversion requirements. The theoretical analysis is verified by a set of full-scaled simulations and further verified against experimental tests on a down-scaled prototype.
AU  - Xiang,X
AU  - Zhang,X
AU  - Chaffey,G
AU  - Gu,Y
AU  - Sang,Y
AU  - Green,T
DO  - 10.1109/ECCE.2018.8558030
PB  - IEEE
PY  - 2018///
TI  - Analysis on circulating current frequency of chain-link modular multilevel DC-DC converters for low step-ratio high-power MVDC applications
UR  - http://dx.doi.org/10.1109/ECCE.2018.8558030
UR  - https://ieeexplore.ieee.org/document/8558030
UR  - http://hdl.handle.net/10044/1/62213
ER  -
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