Power unit having overcurrent/undervoltage-responsive protective

Details Power unit having overcurrent/undervoltage-responsive protective Power unit having overcurrent/undervoltage-responsive protective

1992-06-30

1994-01-25

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 56, 361 92, H02M 5458, H02H 7122

Patent

active

052821242

ABSTRACT:
In a power unit, an output current supplied from the power unit to a load device is constantly detected as a load current. When the detected load current exceeds a predetermined current value, output power supplied from the power unit to the load device is reduced or cut off. An output voltage supplied from the power unit to the load device is constantly detected. When the detected output voltage has continued to be lower than a predetermined voltage value over a predetermined time period, the output power is reduced or cut off.

REFERENCES:
patent: 4412267 (1983-10-01), Hansen
patent: 4751629 (1988-06-01), Shimizu et al.
patent: 4797800 (1989-01-01), Shimizu
patent: 4918592 (1990-04-01), Shimizu
patent: 4973896 (1990-11-01), Shiga et al.
patent: 5093611 (1992-03-01), Nakamura et al.

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