Inverter

Details Inverter Inverter

2011-03-01

2011-03-01

Fureman, Jared J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

Reexamination Certificate

active

07898782

ABSTRACT:
An inverter detects whether a fault that an over current is supplied to a load is generated when the inverter supplies AC power and operates the load, and uses a voltage between a collector and an emitter of a switching element for detecting whether an over current is supplied to the load. The inverter cuts off a switching control signal, switches DC power by a plurality of switching elements supplying AC power to the load, detects the generation of the fault by a plurality of fault detecting units using the voltage of both ends of the collector and the emitter of a plurality of switching elements, generates the switching control signal by a controlling unit that outputs the switching control signal to a switching operation unit, and detects the generation of a fault by any of the plurality of fault detecting units.

REFERENCES:
patent: 4535378 (1985-08-01), Endo
patent: 6288595 (2001-09-01), Hirakata et al.
patent: 2006/0255762 (2006-11-01), Yun
U.S. Appl. No. 11/550,087 to Lee, filed Oct. 17, 2006.

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