Method and apparatus for electrical bus centering
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United States of America Patent
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-
Nov 1, 2011
Grant Date -
Dec 2, 2010
app pub date -
May 29, 2009
filing date -
May 29, 2009
priority date (Note) -
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Abstract
A bus centering device for use in an aircraft electrical power distribution system that includes a positive bus rail, a negative bus rail, and a ground is described. The device includes a central node, a first and second switching component configured to couple the central node to the positive rail and the negative rail for a first and second predetermined duty cycle, respectively. The device includes an inductive component coupled between the central node and ground, and is configured to maintain a voltage at the central node substantially equal to ground, wherein a voltage between the positive rail and the central node is maintained substantially equal to a voltage between the negative rail and the central node. The device includes a first and second current limiting device configured to maintain a continuity of current from the inductive component when the first and second switching components are turned off.
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