Electric power conversion systems – Current conversion – Including automatic or integral protection means
Reexamination Certificate
2006-09-19
2006-09-19
Sterrett, Jeffrey (Department: 2838)
Electric power conversion systems
Current conversion
Including automatic or integral protection means
C363S056040
Reexamination Certificate
active
07110272
ABSTRACT:
A fault handling system for short circuit recovery in three-phase multiple-level inverter bridges, used to drive inductive loads, which waits for either desaturation of switches or expiration of a delay period based upon an amount of time before saturated switches are damaged before commanding off switches that are saturated, and which artificially creates a dead-short across the three-phase output to force switches conducting a fault current to desaturate. By delaying the switching-off of the inverter bridge during a fault, waiting for desaturation to occur, the statistical likelihood of switch survival is improved.
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SMC Electrical Products Inc.
Sterrett Jeffrey
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