DC distribution for industrial systems: opportunities and challenges

This paper investigates the opportunities and challenges associated with adopting a DC distribution scheme for industrial power systems. A prototype DC distribution system has been simulated to investigate the issues. One of the issues focused is the interaction between power converters that are use...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2003-11, Vol.39 (6), p.1596-1601
Main Authors: Baran, M.E., Mahajan, N.R.
Format: Article
Language:English
Subjects:
AC generators
Alternating current
Analog-digital conversion
Converters
DC motors
Direct current
Electric converters
Electric potential
Faults
Filtering
Grounding
Industrial power systems
Power converters
Power electronics
Power supplies
Power system reliability
Voltage
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Summary:This paper investigates the opportunities and challenges associated with adopting a DC distribution scheme for industrial power systems. A prototype DC distribution system has been simulated to investigate the issues. One of the issues focused is the interaction between power converters that are used to convert AC to DC and DC to AC. Another challenging issue investigated is the system grounding. These issues become challenging mainly due to the neutral voltage shift associated with the power converters. The paper shows that converter interactions can be minimized with proper filtering and control on the converters. The paper also proposes a grounding scheme and shows that this scheme provides an effective solution by keeping the neutral voltages low under normal conditions and by limiting the fault currents during fault conditions. With these features, DC distribution provides very reliable and high-quality power.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2003.818969