Inverter control means
First Claim
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1. IN INVERTER CIRCUITRY FOR CHANGING DIRECT CURRENT TO ALTERNATING CURRENT BY SEQUENTIALLY TURNING ON AND OFF AT LEAST ONE PAIR OF CONTROLLED RECTIFIERS, SAID CONTROLLED RECTIFIERS HAVING ASSOCIATED THEREWITH A FIRING CIRCUIT FOR TURNING ON SAID RECTIFIERS, BACK-BIASING INDUCTOR SECONDARY WINDINGS TO AID IN TURNING OFF SAID RECTIFIERS, AND MEANS FOR TURNING OFF SAID RECTIFIERS, SAID MEANS COMPRISING:
- AUXILIARY INVERTER CIRCUITRY COMPRISING;
A CONSTANT POTENTIAL DIRECT CURRENT SOURCE, AT LEAST ONE PAIR OF CONTROLLABLE UNIDIRECTIONAL CURRENTCONDUCTING DEVICES CONNECTED IN SERIES ACROSS SAID CONSTANT POTENTIAL DIRECT CURRENT SOURCE, INDUCTOR PRIMARY WINDINGS CONNECTED IN SERIES WITH SAID CONTROLLABLE UNIDIRECTIONAL CURRENT-CONDUCING DEVICES AND COUPLED TO SAID INDUCTOR SECONDARY WINDINGS TO TRANSMIT A BACK-BIASING SIGNAL THERETO, DIODES CONNECTED ACROSS SAID INDUCTOR PRIMARY WINDINGS TO RESET SAID WINDINGS, CAPACITIVE MEANS CONNECTED TO SAID INDUCTOR PRIMARY WINDINGS TO PROVIDE BACK-BIASING TURN-OFF SIGNALS, MEANS TO SEQUENTIALLY TURN ON SAID CONTROLLABLE UNIDIRECTIONAL CURRENT-CONDUCTING DEVICES, SAID MEANS SYNCHRONIZED WITH SAID FIRING CIRCUIT, WHEREBY DIRECT IS CHANGED TO ALTERNATING CURRENT BY CONTROLLING CURRENT FLOW THROUGH SAID CONTROLLED RECTIFIERS BY SEQUENTIALLY TURNING SAID CONTROLLED RECTIFIERS ON BY SAID FIRING CIRCUIT AND OFF BY BACK-BIASING SIGNALS IN SAID SECONDARY WINDINGS.
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1 Claim
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1. IN INVERTER CIRCUITRY FOR CHANGING DIRECT CURRENT TO ALTERNATING CURRENT BY SEQUENTIALLY TURNING ON AND OFF AT LEAST ONE PAIR OF CONTROLLED RECTIFIERS, SAID CONTROLLED RECTIFIERS HAVING ASSOCIATED THEREWITH A FIRING CIRCUIT FOR TURNING ON SAID RECTIFIERS, BACK-BIASING INDUCTOR SECONDARY WINDINGS TO AID IN TURNING OFF SAID RECTIFIERS, AND MEANS FOR TURNING OFF SAID RECTIFIERS, SAID MEANS COMPRISING:
- AUXILIARY INVERTER CIRCUITRY COMPRISING;
A CONSTANT POTENTIAL DIRECT CURRENT SOURCE, AT LEAST ONE PAIR OF CONTROLLABLE UNIDIRECTIONAL CURRENTCONDUCTING DEVICES CONNECTED IN SERIES ACROSS SAID CONSTANT POTENTIAL DIRECT CURRENT SOURCE, INDUCTOR PRIMARY WINDINGS CONNECTED IN SERIES WITH SAID CONTROLLABLE UNIDIRECTIONAL CURRENT-CONDUCING DEVICES AND COUPLED TO SAID INDUCTOR SECONDARY WINDINGS TO TRANSMIT A BACK-BIASING SIGNAL THERETO, DIODES CONNECTED ACROSS SAID INDUCTOR PRIMARY WINDINGS TO RESET SAID WINDINGS, CAPACITIVE MEANS CONNECTED TO SAID INDUCTOR PRIMARY WINDINGS TO PROVIDE BACK-BIASING TURN-OFF SIGNALS, MEANS TO SEQUENTIALLY TURN ON SAID CONTROLLABLE UNIDIRECTIONAL CURRENT-CONDUCTING DEVICES, SAID MEANS SYNCHRONIZED WITH SAID FIRING CIRCUIT, WHEREBY DIRECT IS CHANGED TO ALTERNATING CURRENT BY CONTROLLING CURRENT FLOW THROUGH SAID CONTROLLED RECTIFIERS BY SEQUENTIALLY TURNING SAID CONTROLLED RECTIFIERS ON BY SAID FIRING CIRCUIT AND OFF BY BACK-BIASING SIGNALS IN SAID SECONDARY WINDINGS.
- AUXILIARY INVERTER CIRCUITRY COMPRISING;
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Current AssigneeMagnetek Incorporated Ste
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Original AssigneeJames P. Landis
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InventorsLandis, James P.
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Application NumberUS04/342,023Time in Patent Office1,254 DaysField of SearchUS Class Current363/136CPC Class CodesH02M 7/5155 wherein each commutation el...
