CONTROL METHOD OF INDUCTION MOTOR

WIPO Patent Application WO/2004/025819

A1

A control method of an induction motor suitable for an induction motor requiring a very large driving torque at the time of starting or acceleration of a textile machine, or the like, wherein a variable voltage variable frequency (VVVF) inverter (8) supplying power to the primary winding of the induction motor (9) increases its output voltage and output frequency after start while keeping the output current from the inverter lower than a specified current limit level, lowers only the output voltage of the VVVF inverter (8) down to a specified voltage set level after finishing acceleration of the induction motor (9), and then supplies an AC voltage corresponding to the frequency set level and the voltage set level continuously from the VVVF inverter (8) to the induction motor (9).

JPS60261378	CONTROLLER FOR AC MOTOR
JPS5915478	[Title of the Invention] A method and a device which operate an alternating current motor
JPS5579692	METHOD AND DEVICE FOR DRIVING ELECTRIC MOTOR FOR SPINDLE OF THREADDPLYING MACHINE

TAKAMOTO YASUHISA (JP)
ISHIDA ICHIRO (JP)
TAKANO TOSHIO (JP)
TAKASHIMA MAKOTO (JP)

PCT/JP2003/010855

March 25, 2004

August 27, 2003

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FUJI ELECTRIC CO LTD (JP)
TSUDAKOMA IND CO LTD (JP)
TAKAMOTO YASUHISA (JP)
ISHIDA ICHIRO (JP)
TAKANO TOSHIO (JP)
TAKASHIMA MAKOTO (JP)

H02P1/26; H02P1/28; H02P1/30; (IPC1-7): H02P1/30; H02P7/63

WO1997050162A1

1997-12-31

JP2001161085A	2001-06-12
JPS6295982A	1987-05-02
JPH11103597A	1999-04-13
EP1162727A2	2001-12-12

Yamaguchi, Iwao c/o Yamaguchi International Patent Office (3-2 Higashigotanda 2-chom, Shinagawa-ku Tokyo, JP)

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