Electricity: electrical systems and devices – Safety and protection of systems and devices – Voltage regulator protective circuits
Patent
1991-07-22
1993-08-10
DeBoer, Todd E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Voltage regulator protective circuits
363 58, H02M 7515
Patent
active
052354873
ABSTRACT:
In an inverter with overload current projection, a half-bridge is divided in module form into two quarter-bridge branches. Disposed in the latter are a gate turn-off semiconductor component (7, 8), a freewheeling diode (9, 10) situated opposite with respect to a center point and a blocking capacitor (11, 12) in parallel with freewheeling diode (9, 10) and turn-off semiconductor component (7, 8). A measuring resistor (R1, R2) and a current-limiting component (L1, L2) are provided between a load terminal (3) of the bridge circuit and the center points of the quarter-bridge branches. The load current can be determined in a transient-free manner with the measuring resistors.
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Asea Brown Boveri Ltd.
Deboer Todd E.
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