Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Patent
1981-03-03
1982-11-09
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
363135, 363138, 363124, 307252M, H02H 106, H02M 332
Patent
active
043588115
ABSTRACT:
A regulator has a main valve connected between a first terminal of a d-c source and a first terminal of a load. A first series circuit poled similarly to the main valve and including a commutating valve in series with a commutating capacitor is connected in parallel with the main valve. Another series circuit including the commutating valve, a reversing valve and a reversing choke is connected in parallel with the main valve and conducts current in the same direction. A swingback valve is connected in parallel with the reversing valve and poled oppositely. A second choke is connected in series with the capacitor in the first series circuit and the end of the second choke connected to the first load terminal is also connected to a second line terminal by a first bypass diode poled to carry the load current, and a second bypass valve is connected between the second load terminal and the end of the second choke connected to the capacitor and is also poled to be conductive to current flowing in the load when the main valve is non-conductive. With the main valve blocked, a very small voltage can thereby be impressed on the load without the occurrence of overvoltages at the capacitor.
REFERENCES:
patent: 3614586 (1971-10-01), King
patent: 4259714 (1981-03-01), Zander
Salce Patrick R.
Siemens Aktiengesellschaft
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