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DC bus voltage control for a distributed power system

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Author

Summary, in English

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.

Publishing year

2003

Language

English

Pages

1405-1412

Publication/Series

IEEE Transactions on Power Electronics

Volume

18

Issue

6

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Other Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • power
  • power distribution
  • power cables
  • losses
  • converters
  • impedance
  • stability
  • semiconductor devices

Status

Published

ISBN/ISSN/Other

  • ISSN: 0885-8993