BEARING CURRENT MITIGATION FOR AN ELECTRIC MACHINE EMBEDDED IN A GAS TURBINE ENGINE

A hybrid-electric propulsion system (150) is provided. In one example aspect, the hybrid-electric propulsion system (150) includes a power converter (188A) and a propulsor (200A). The propulsor (200A) includes a gas turbine engine (210A) having a shaft (246) and one or more bearings (290) supporting...

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Bibliographische Detailangaben
Hauptverfasser:	OSAMA, Mohamed, DROZD, Bartlomiej, YAGIELSKI, John Russell
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS COSMONAUTICS EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS JET-PROPULSION PLANTS LIGHTING MECHANICAL ENGINEERING PARACHUTES PERFORMING OPERATIONS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A hybrid-electric propulsion system (150) is provided. In one example aspect, the hybrid-electric propulsion system (150) includes a power converter (188A) and a propulsor (200A). The propulsor (200A) includes a gas turbine engine (210A) having a shaft (246) and one or more bearings (290) supporting the shaft (246). The propulsor (200A) also includes an electric machine (300A) electrically coupled with the power converter (188A). The electric machine (300A) includes a stator assembly (340) and a rotor assembly (310). The rotor assembly (310) has a rotor (312) and a rotor connection assembly (316). The rotor connection assembly (316) operatively couples the rotor (312) with the shaft (246). The rotor connection assembly (316) has an insulated joint (322) for interrupting common mode electric current from flowing from the rotor (312) of the electric machine (300A) to the shaft (246). A grounding device (360) is included to electrically ground the shaft (246). The power converter (188A) includes an electromagnetic interference filter (189A) to reduce common mode voltage reaching the electric machine (300A).