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DC bus voltage control for a distributed power system

Karlsson, Per LU and Svensson, Jörgen LU (2003) In IEEE Transactions on Power Electronics 18(6). p.1405-1412
Abstract
This paper addresses voltage control of distributed dc power systems. DC power systems have been discussed as a result of the introduction of renewable, small-scale power generation units. Also, telecommunication power systems featuring UPS properties might benefit from a broader introduction of dc power systems. Droop control is utilized to distribute the load between the source converters. In order to make the loading of the source converters equal, in per unit, the voltage control algorithm for each converter has to be designed to act similar. The dc side capacitor of each converter, needed for filtering, is also determined as a consequence. The root locus is investigated for varying dc bus impedance. It is found that the risk of... (More)
This paper addresses voltage control of distributed dc power systems. DC power systems have been discussed as a result of the introduction of renewable, small-scale power generation units. Also, telecommunication power systems featuring UPS properties might benefit from a broader introduction of dc power systems. Droop control is utilized to distribute the load between the source converters. In order to make the loading of the source converters equal, in per unit, the voltage control algorithm for each converter has to be designed to act similar. The dc side capacitor of each converter, needed for filtering, is also determined as a consequence. The root locus is investigated for varying dc bus impedance. It is found that the risk of entering converter over-modulation is a stronger limitation than stability, at least for reasonable dc bus cable parameters. The stationary and dynamic properties during load variations are also investigated. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
power, power distribution, power cables, losses, converters, impedance, stability, semiconductor devices
in
IEEE Transactions on Power Electronics
volume
18
issue
6
pages
1405 - 1412
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000186436100021
  • scopus:0242443728
ISSN
0885-8993
DOI
10.1109/TPEL.2003.818872
language
English
LU publication?
yes
id
3250d0b9-646a-4e51-879c-bc9a81feaf14 (old id 296091)
date added to LUP
2007-09-16 06:57:24
date last changed
2017-07-30 04:44:53
@article{3250d0b9-646a-4e51-879c-bc9a81feaf14,
  abstract     = {This paper addresses voltage control of distributed dc power systems. DC power systems have been discussed as a result of the introduction of renewable, small-scale power generation units. Also, telecommunication power systems featuring UPS properties might benefit from a broader introduction of dc power systems. Droop control is utilized to distribute the load between the source converters. In order to make the loading of the source converters equal, in per unit, the voltage control algorithm for each converter has to be designed to act similar. The dc side capacitor of each converter, needed for filtering, is also determined as a consequence. The root locus is investigated for varying dc bus impedance. It is found that the risk of entering converter over-modulation is a stronger limitation than stability, at least for reasonable dc bus cable parameters. The stationary and dynamic properties during load variations are also investigated.},
  author       = {Karlsson, Per and Svensson, Jörgen},
  issn         = {0885-8993},
  keyword      = {power,power distribution,power cables,losses,converters,impedance,stability,semiconductor devices},
  language     = {eng},
  number       = {6},
  pages        = {1405--1412},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Power Electronics},
  title        = {DC bus voltage control for a distributed power system},
  url          = {http://dx.doi.org/10.1109/TPEL.2003.818872},
  volume       = {18},
  year         = {2003},
}