Two wire solid state AC/DC circuit breaker

Details Two wire solid state AC/DC circuit breaker Two wire solid state AC/DC circuit breaker

1998-10-09

2000-12-12

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

H02H 900

Patent

active

061606898

ABSTRACT:
A two wire solid state AC/DC circuit breaker has a line terminal for connecting the power and the load terminal for connecting to a load. A pair of insulated gate bipolar transistors (IGBTs) are connected in parallel across the line and load terminals in reversed polarity relative to one another. A diode is placed in series with each IGBT limiting current flow to the direction of polarity of the IGBT. Current sensing circuitry is connected across the terminals for sensing current passing through the IGBTs and when a predetermined level has been exceeded, a voltage pulse is generated to the respective bases of the IGBTs to turn them off. This terminates current flow through the respective IGBTs instantaneously.

REFERENCES:
patent: 5170310 (1992-12-01), Studtmann et al.
patent: 5831349 (1998-11-01), Weng

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