METHOD OF DIAGNOSING ABNORMALITY OF SENSORLESS CONTROL OF MOTOR FOR AIR COMPRESSOR

Proposed is a method of diagnosing abnormality of sensorless control of a motor for an air compressor, the method including estimating a speed of a motor in real time when a motor starts determining whether or not a preset condition for activating a function of diagnosing abnormality of sensorless c...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, Sung Do, KIM, Joo Yeon, YOU, Chang Seok, KANG, Min Su
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERATION MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY REGULATING
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Beschreibung
Zusammenfassung:	Proposed is a method of diagnosing abnormality of sensorless control of a motor for an air compressor, the method including estimating a speed of a motor in real time when a motor starts determining whether or not a preset condition for activating a function of diagnosing abnormality of sensorless control is satisfied, from a slope of the estimated speed of the motor performing control for decreasing an amount of electric current to be applied to the motor, in a case where the preset condition is satisfied computing an amount of decrease in the slope of the estimated speed of the motor while the amount of the electric current is decreased; and determining whether or not the sensorless control fails, by comparing the amount of the decrease in the slope of the speed of the motor with a preset value for confirming diagnosis of the abnormality of the sensorless control.