INVERTER CONTROLLER FOR DRIVING MOTOR AND APPARATUS EMPLOYING THE SAME

PROBLEM TO BE SOLVED: To provide an inverter controller for driving a motor satisfactorily by reducing impact of ambient temperature variation thereby enhancing precision in detecting a phase current of the motor. SOLUTION: In an inverter for driving a motor by inverting a DC voltage into an AC thre...

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1. Verfasser:	MATSUSHIRO HIDEO
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:	PROBLEM TO BE SOLVED: To provide an inverter controller for driving a motor satisfactorily by reducing impact of ambient temperature variation thereby enhancing precision in detecting a phase current of the motor. SOLUTION: In an inverter for driving a motor by inverting a DC voltage into an AC three-phase voltage, offset voltage of a DC current detector outputting a voltage according to a current flowing through an inverter bus is regulated when all the PWM signals for controlling the upper arm switching elements of an inverter are entirely turned on or off during driving of the motor. COPYRIGHT: (C)2008,JPO&INPIT