Fault detector

Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means

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Details

361 54, 363 57, 363 58, H02H 308, H02H 7122

Patent

active

043464211

ABSTRACT:
A fault detector for detecting shoot-through conditions in series connected solid state rectifiers (326, 329) of a power inverter (314) is disclosed. A capacitor (311) discharges when a shoot-through occurs and the discharge current is detected by a current transformer (315). An SCR (317) is gated on by the detector to short circuit the DC bus (327, 328) and prevent damage to the solid state rectifiers (326, 329).

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"Pulse Coded Inverter for Utility Load Management System", by Galloway et al., IAS 1977 Annual, pp. 149-155.
"One Year Operating Experience of a Pulse Coded Inverter for Utility Load Management Systems", by St. Onge et al., pp. 1-7.

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