Electric Motor System

The purpose of the present invention is to provide an electric motor system such that loss of synchronism of an inverter-driven synchronous motor with no magnetic pole position sensor can be easily detected. In order to achieve the purpose, the present invention pertains to an electric motor equippe...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TOMITA, Toshio, OKUBO, Tomofumi
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 ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The purpose of the present invention is to provide an electric motor system such that loss of synchronism of an inverter-driven synchronous motor with no magnetic pole position sensor can be easily detected. In order to achieve the purpose, the present invention pertains to an electric motor equipped with a synchronous motor, an inverter having a power conversion device for driving the synchronous motor, and a load connected to the synchronous motor, and is configured such that loss of synchronism of the synchronous motor is determined on the basis of a direct-current voltage in the power conversion device.