Solid state power circuits employing new autoimpulse commutation

Abstract

Abstract THIS INVENTION COMPRISES A FAMILY OF IMPROVED POWER CIRCUITS USING A PAIR OF TURN-ON, NONGATE TURN-OFF CONTROLLED CONDUCTING DEVICES INTERCONNECTED IN SERIES CIRCUIT RELATIONSHIP WITH A TAPPED FIRST LINEAR INDUCTOR ACROSS A PAIR OF POWER SUPPLY TERMINALS THAT ARE ADAPTED TO BE CONNECTED ACROSS A SOURCE OF ELECTRIC POTENTIAL. A LOAD CIRCUIT IS SEPARATELY CONNECTED IN SERIES CIRCUIT RELATIONSHIP WITH THE FIRST OF SAID PAIR OF DEVICES WITH THE LOAD CIRCUIT BEING CONNECTED THROUGH A DIRECT CURRENT PATH BETWEEN THE TAP POINT ON THE FIRST LINEAR INDUCTOR AND ONE OF THE POWER SUPPLY TERMINALS. THE CIRCUIT ARE FURTHER COMPRISED BY COMMUNICATION CIRCUIT MEANS FORMED BY AT LEAST ONE COMMUTATING CAPACITANCE AND SERIES CONNECTED SECOND LINEAR INDUCTOR WITH THE SERIES CIRCUIT THUS COMPRISED BEING CONNECTED BETWEEN THE TAP POINT ON THE FIRST LINEAR INDUCTOR AND TO THE REMAINING TERMINAL (NOT CONNECTED TO THE FIRST INDUCTOR) OF ONE OF THE CONDUCTING DEVICES. THE SERIES CIRCUIT COMPRISED BY THE COMMUTATING CAPACITOR AND SECOND INDUCTOR IS TURNED TO SERIES RESONANCE AT A COMMUNICATING FREQUENCY HAVING A PERIOD WHICH IS SUBSTANTIALLY SHORTER THAN THE LOAD CURRENT CONDUCTING PERIODS OF THE POWER CIRCUIT. WITH THIS ARRANGEMENT, ONE OF THE PAIR OF CONTROLLED CONDUCTING DEVICES IS ADAPTED TO BE INTERMITTENTLY RENDERED CONDUCTIVE FOR DISCHARGING THE COMMUTATING CAPACITANCE THROUGH A PORTION OF THE FIRST INDUCTOR AND THEREBY TERMINATING THE CONDUCTION OF THE OTHER OF THE PAIR OF CONDUCTING DEVICES. IN PREFERRED EMBODIMENTS BIDIRECTIONAL CONDUCTING DEVICES ARE EMPLOYED, AND WHERE SUCH BIDIRECTIONAL DEVICES ARE EMPLOYED THE CIRCUITS MAY ALSO PROVIDE OPERATION IN TWO DIFFERENT MODES TO ALLOW FOR POWER SUPPLY TO THE LOAD AND FOR PUMP BACK TO POWER FROM THE LOAD TO THE POWER SOURCE, AS WELL AS INVERSION FROM DIRECT CURRENT TO ALTERNATING CURRENT. BRIDGE TYPE POWER CIRCUITS COMPRISING THE SAME BASIC CIRCUIT CONFIGURATIONS ARE ALSO PROVIDED.

Inventors

No inventors recorded.

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