System interconnection inverter including overvoltage and...

Electric power conversion systems – Current conversion – Including automatic or integral protection means

Reexamination Certificate

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Details

C363S055000, C363S142000, C307S127000, C361S064000

Reexamination Certificate

active

07839665

ABSTRACT:
A system interconnection inverter includes a step-up converter and an inverter. Moreover, the system interconnection inverter includes a short-circuit current-interrupting diode with a cathode connected to an input terminal of a negative bus, a semiconductor switch connected to an anode of the short-circuit current-interrupting diode, a semiconductor switch drive circuit that drives the semiconductor switch, a semiconductor switch-off circuit that turns off the semiconductor switch drive circuit when negative power is applied such that electric current flows from a cathode toward an anode of the input terminal, and a control circuit that controls the semiconductor switch drive circuit.

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