ACTIVE DISCHARGE OF AN ELECTRIC DRIVE SYSTEM

Systems, devices, and methods for active discharge of an electric drive system. In one implementation, an electric drive system for a vehicle includes an inverter having at least one phase leg, wherein a first of the phase legs includes a first power switch, a dc/dc converter configured to generate...

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Bibliographische Detailangaben
Hauptverfasser:	Hornkamp, Michael, Maurer, Vinzenz, Hägglund, Douglas Arnold Erik Andersson, Volke, Andreas, Abid, Salem, Peter, Matthias
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 CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERATION MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	Systems, devices, and methods for active discharge of an electric drive system. In one implementation, an electric drive system for a vehicle includes an inverter having at least one phase leg, wherein a first of the phase legs includes a first power switch, a dc/dc converter configured to generate an internal supply voltage that is regulated with respect to a voltage on a rail configured to be coupled to a dc power supply, and a gate drive channel configured to drive the first power switch into conductance by applying a relatively high voltage difference derived from the internal supply voltage during operation of the vehicle and to continue the driving of the first power switch with a relatively lower voltage difference derived from the internal supply voltage after a signal indicating shut-down or fault of the vehicle. The dc/dc converter is configured to generate the internal supply voltage to have either a relatively high voltage difference with respect to the voltage on the rail or a relatively lower voltage difference with respect to the voltage on the rail.