Imperial College London
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Professor Tim Green, FREng

Faculty of Engineering, Department of Electrical and Electronic Engineering

Academic Leader for Sustainability, Professor
 
 
 
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Contact

 

+44 (0)20 7594 6171t.green Website CV

 
 
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Location

 

1107EElectrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Merlin:2017:10.1109/TPEL.2017.2723948,
author = {Merlin, MMC and Soto-Sanchez, D and Judge, PD and Chaffey, G and Clemow, P and Green, TC and Trainer, DR and Dyke, KJ},
doi = {10.1109/TPEL.2017.2723948},
journal = {IEEE Transactions on Power Electronics},
pages = {3898--3910},
title = {The extended overlap alternate arm converter: a voltage source converter with DC fault ride-through capability and a compact design},
url = {http://dx.doi.org/10.1109/TPEL.2017.2723948},
volume = {33},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The  Alternate  Arm  Converter  (AAC)  was  one  ofthe  first  modular  converter  topologies  to  feature  DC-side  faultride-through  capability  with  only  a  small  penalty  in  powerefficiency. However, the simple alternation of its arm conductionperiods  (with  an  additional  short  overlap  period)  resulted  in(i)  substantial  6-pulse  ripples  in  the  DC  current  waveform,(ii) large DC-side filter requirements, and (iii) limited operatingarea  close  to  an  energy  sweet-spot.  This  paper  presents  a  newmode  of  operation  called  Extended  Overlap  (EO)  based  onthe  extension  of  the  overlap  period  to  60which  facilitates  afundamental redefinition of the working principles of the AAC.The  EO-AAC  has  its  DC  current  path  decoupled  from  the  ACcurrent paths, a fact allowing (i) smooth DC current waveforms,(ii)  elimination  of  DC  filters,  and  (iii)  restriction  lifting  on  thefeasible  operating  point.  Analysis  of  this  new  mode  and  EO-AAC  design  criteria  are  presented  and  subsequently  verifiedwith  tests  on  an  experimental  prototype.  Finally,  a  comparisonwith  other  modular  converters  demonstrates  that  the  EO-AACis at least as power efficient as a hybrid MMC (i.e. a DC faultride-through capable MMC) while offering a smaller converterfootprint  because  of  a  reduced  requirement  for  energy  storagein the submodules and a reduced inductor volume.
AU  - Merlin,MMC
AU  - Soto-Sanchez,D
AU  - Judge,PD
AU  - Chaffey,G
AU  - Clemow,P
AU  - Green,TC
AU  - Trainer,DR
AU  - Dyke,KJ
DO  - 10.1109/TPEL.2017.2723948
EP  - 3910
PY  - 2017///
SN  - 1941-0107
SP  - 3898
TI  - The extended overlap alternate arm converter: a voltage source converter with DC fault ride-through capability and a compact design
T2  - IEEE Transactions on Power Electronics
UR  - http://dx.doi.org/10.1109/TPEL.2017.2723948
UR  - http://hdl.handle.net/10044/1/48373
VL  - 33
ER  -
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