TWO-SWITCH EXCITER DRIVE ARCHITECTURE WITH SINGLE SWITCH MODES

A system includes a two-switch H-bridge topology, which has a first switch (Q1) with a first gate drive (104) connected to control on and off states of the first switch. A second switch (Q2) has a second gate drive (106) connected to control on and off states of the second switch. An exciter winding...

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Bibliographische Detailangaben
Hauptverfasser:	JOYCE, Thomas P, DRAGER, Barry, DEFENBAUGH, John F
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRIC ELEMENTS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES GENERATION RELAYS SELECTORS
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Beschreibung
Zusammenfassung:	A system includes a two-switch H-bridge topology, which has a first switch (Q1) with a first gate drive (104) connected to control on and off states of the first switch. A second switch (Q2) has a second gate drive (106) connected to control on and off states of the second switch. An exciter winding is connected from a first node between the first switch and a second flyback diode to a second node between a first flyback diode and the second switch. A controller (116) is connected to control the first gate drive and the second gate drive in a mode wherein the first switch is always on while the second cycles as a duty-cycle-controlled switch element for the exciter winding.