AC MOTOR WITH REACTOR CONNECTED TO POWER SOURCE

Title:

AC MOTOR WITH REACTOR CONNECTED TO POWER SOURCE

Document Type and Number:

WIPO Patent Application WO/1997/025770

Kind Code:

A1

Abstract:

A motor (33) having terminals U, V and W connected through reactors (32) to the corresponding phases of a power supply (31), each reactor (32) being connected in parallel with a switch (35). The motor is further provided with terminals Z, X and Y connected with its terminals U, V and W through switches (37). When the switches (37) are closed and the switches (35) are set to interconnect the terminals Z, X and Y, the winding of the motor becomes Y-connection and the motor is directly connected to the power source. On the other hand, when the switches (37) are opened and the switches (35) are set to connect the terminals Z, X and Y to the terminals U, V and W, the winding of the motor becomes delta-connection and the motor is connected to the power source through the reactor (32).

More Like This:

JPH08163886

MOTOR CONTROLLER

Inventors:

NAKAMURA KOSEI (JP)
MASUYA MICHI (JP)
MAEDA HISASHI (JP)
ARIMATSU YOHEI (JP)

Application Number:

PCT/JP1996/003825

Publication Date:

July 17, 1997

Filing Date:

December 26, 1996

Export Citation:

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Assignee:

FANUC LTD (JP)
NAKAMURA KOSEI (JP)
MASUYA MICHI (JP)
MAEDA HISASHI (JP)
ARIMATSU YOHEI (JP)

International Classes:

H02P21/04; H02P1/28; H02P1/32; H02P21/05; H02P23/00; H02P23/03; H02P23/04; H02P25/10; H02P25/20; (IPC1-7): H02P7/36

Foreign References:

JPS62166797A	1987-07-23
JPS6032596A	1985-02-19
JPS62222982A	1987-09-30
JPH033693A	1991-01-09
JPS4719310A	1972-09-21

Other References: