Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1975-09-26
1976-12-21
Hohauser, Herman
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
H02J 700
Patent
active
039990788
ABSTRACT:
An interruption free current supply system utilizing an inverter which is maintained in the state of readiness during normal operation with its drive unit in operation and synchronized with the a.c. voltage network but with ignition pulses from the drive unit blocked so that when switching to emergency power the ignition pulses can be enabled immediately for the inverter to take over the supply of power. A filter is permanently connected ahead of the load to filter high and low frequency interference on the line voltage and during emergency power operation to filter the output voltage of the inverter, the filter further acting as means to store energy during the switching interval.
REFERENCES:
patent: 3683198 (1972-08-01), Thode
patent: 3876922 (1975-04-01), Forstbauer
Hohauser Herman
Siemens Aktiengesellschaft
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