A method and system of operating a multi-phase electric machine include operating an inverter to control the multi-phase machine. The inverter has a plurality of inverter legs including an auxiliary inverter leg. Each of the plurality of inverter legs has at least one switch device. The multi-phase machine has a plurality of phases in which each phase is controlled by a respective inverter leg of the inverter. The method and system also include determining whether a phase of the multi-phase machine is experiencing a partial phase loss, for example, by injecting a signal into the phases and analyzing the frequency response. In response to determining that a phase of the multi-phase machine is experiencing a partial phase loss, the method and system include utilizing the auxiliary inverter leg to supplement energy to the phase experiencing the partial phase loss to continue operating the multi-phase machine.
FAULT TOLERANT INVERTER FOR PARTIAL PHASE LOSS IN MULTI-PHASE MACHINES
FEHLERTOLERANTER WECHSELRICHTER FÜR PARTIELLEN PHASENVERLUST IN MEHRPHASIGEN MASCHINEN
ONDULEUR TOLÉRANT AUX DÉFAILLANCES POUR PERTE DE PHASE PARTIELLE DANS DES MACHINES POLYPHASÉES
2023-08-16
Patent
Electronic Resource
English
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES , Systeme zum Regeln elektrischer oder magnetischer Veränderlicher / 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 |
Fault tolerant inverter for partial phase loss in multi-phase machines
European Patent Office | 2024
|FAULT TOLERANT INVERTER FOR PARTIAL PHASE LOSS IN MULTI-PHASE MACHINES
European Patent Office | 2022
|FAULT TOLERANT INVERTER FOR PARTIAL PHASE LOSS IN MULTI-PHASE MACHINES
European Patent Office | 2021
|Fault tolerant inverter for local phase loss in multi-phase electrical machines
European Patent Office | 2023
|