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.
ACTIVE DISCHARGE OF AN ELECTRIC DRIVE SYSTEM
AKTIVE ENTLADUNG EINES ELEKTROANTRIEBSSYSTEMS
DÉCHARGE ACTIVE D'UN SYSTÈME D'ENTRAÎNEMENT ÉLECTRIQUE
2022-08-24
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |