HIGH POWER-DENSITY, HIGH BACK EMF PERMANENT MAGNET MACHINE AND METHOD OF MAKING SAME

PROBLEM TO BE SOLVED: To provide an electric drive system including a permanent magnet machine.SOLUTION: An electric drive system comprises: a permanent magnet machine (70) having a rotor (116) and a stator (118); and a power converter (62) electrically coupled to the permanent magnet machine (70) a...

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Hauptverfasser:	IMAN MOHAMED FAUZI EL REFAIE, KING ROBERT D
Format:	Patent
Sprache:	eng
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 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 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:	PROBLEM TO BE SOLVED: To provide an electric drive system including a permanent magnet machine.SOLUTION: An electric drive system comprises: a permanent magnet machine (70) having a rotor (116) and a stator (118); and a power converter (62) electrically coupled to the permanent magnet machine (70) and configured to convert a DC link voltage to an AC output voltage to drive the permanent magnet machine (70). The power converter (62) includes a plurality of silicon carbide switching devices (74-84) having a voltage rating that exceeds a peak line-to-line back electromotive force of the permanent magnet machine (70) at a maximum speed of the permanent magnet machine (70).