METHOD AND DEVICE FOR DRIVING INDUCTION MOTOR, CAPABLE OF REDUCING TIME REQUIRED TO REACH ROTATIONAL SPEED CORRESPONDING TO NORMAL OPERATION

PURPOSE: A method and a device are provided to reduce time required to reach a rotational speed corresponding to a normal operation, by feeding an over-voltage to an induction motor. CONSTITUTION: A method comprises a first step of accelerating an induction motor, by permitting an inverter to increa...

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Bibliographic Details
Main Authors TAKAMOTO, YASUHISA, TAKANO, TOSHIO, TAKASHIMA, MAKOTO
Format Patent
LanguageEnglish
Korean
Published 12.01.2005
Edition7
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
LOOMS
METHODS OF WEAVING
TEXTILES
WEAVING
WOVEN FABRICS
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Summary:PURPOSE: A method and a device are provided to reduce time required to reach a rotational speed corresponding to a normal operation, by feeding an over-voltage to an induction motor. CONSTITUTION: A method comprises a first step of accelerating an induction motor, by permitting an inverter to increase an output frequency thereof until the output frequency reaches a frequency level corresponding to a normal operation, and generating an output for increasing an AC voltage to an over-voltage state in correspondence to the output frequency; and a second step of lowering the AC voltage to a voltage level corresponding to the normal operation when the rotational speed of the induction motor has achieved a predetermined speed.
Bibliography:Application Number: KR20040041796