Electrical transmission or interconnection systems – Miscellaneous systems – Conversion systems
Reexamination Certificate
2006-02-14
2006-02-14
Sircus, Brian (Department: 2836)
Electrical transmission or interconnection systems
Miscellaneous systems
Conversion systems
C307S127000, C363S087000
Reexamination Certificate
active
06998735
ABSTRACT:
A controlled rectifier bridge includes a plurality of segments each having an element responsive to a control signal, and an output having a voltage, a first current and a second current. Sensors provide sensed current values from first and second output currents from the bridge. A routine determines if the sensed current values are greater than a predetermined value. A regulator outputs the control signals to the segments in order to control current conduction within the segments. A routine determines if a circuit interrupter is open or if current is not flowing between bridge inputs and the corresponding alternating current phases. A routine disables the control signals to pairs of the segments when the sensed current values are greater than the predetermined value, and when the circuit interrupter is open or when current is not flowing between the inputs and the corresponding alternating current phases.
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“Active current balance between parallel thyristors in multi-bridge AC-DC rectifiers,” Gibbs, I.A; Kimmel, D.S.; Energy Conversion, IEEE Transactions on vol. 16, Issue 4, Dec. 2001 pp. 334-339, Manuscript received Jun. 22, 2001.
Moran Martin J.
Sircus Brian
Squires Brett
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