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Title: Method and apparatus for reducing the harmonic currents in alternating-current distribution networks

An improved apparatus and method reduce the harmonic content of AC line and neutral line currents in polyphase AC source distribution networks. The apparatus and method employ a polyphase Zig-Zag transformer connected between the AC source distribution network and a load. The apparatus and method also employs a mechanism for increasing the source neutral impedance of the AC source distribution network. This mechanism can consist of a choke installed in the neutral line between the AC source and the Zig-Zag transformer. 23 figs.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
403654
Assignee:
Universities Research Association, Inc., Washington, DC (United States) PTO; SCA: 240201; PA: EDB-97:002183; SN: 96001695587
Patent Number(s):
US 5,576,942/A/
Application Number:
PAN: 8-316,634
Contract Number:
AC02-76CH03000
Resource Relation:
Other Information: PBD: 19 Nov 1996
Research Org:
Universities Research Association
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; POWER DISTRIBUTION SYSTEMS; HARMONICS; AC SYSTEMS; PROCESS CONTROL; TRANSFORMERS; ELECTRIC IMPEDANCE

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