Apparatus for driving induction motor

Details Apparatus for driving induction motor Apparatus for driving induction motor

1996-05-29

1998-05-05

Cabeca, John C.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318802, 318805, H02P 528

Patent

active

057478333

ABSTRACT:
A driving apparatus of an induction motor applied for drive of a fan of an air conditioner has a voltage limiter unit for limiting an upper limit of an output voltage of an inverter circuit, a voltage slow-up unit for converting an output signal of an output voltage commanding unit into a signal which increases gradually when that output signal rises, a voltage slow-down unit for converting the output signal of the output voltage commanding unit into a signal which decreases gradually when that output signal falls, and a feed interruption processing unit for setting the output signal value of the output voltage commanding unit to 0 when interrupting feeding and delivering a feed interruption signal at the termination of the lapse of a predetermined time.

REFERENCES:
patent: 3916275 (1975-10-01), Plunkett et al.
patent: 4243927 (1981-01-01), D'atre
patent: 4455522 (1984-06-01), Lipo
patent: 4683412 (1987-07-01), Bialek et al.
patent: 4777420 (1988-10-01), Dadpey et al.
patent: 5272429 (1993-12-01), Lipo et al.

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