Speed control apparatus for elevators using variable voltage and

Details Speed control apparatus for elevators using variable voltage and Speed control apparatus for elevators using variable voltage and

1994-09-12

1995-05-09

Wysocki, Jonathan

Electricity: motive power systems

Plural diverse motor controls

Running-speed control

318800, 187296, H02F 700

Patent

active

054143330

ABSTRACT:
A speed control apparatus for an elevator using V.V.V.F. control including a power conversion device, an induction motor and a control device. The control device detects a secondary magnetic flux value from an output current of the power conversion device and generates a control command value for smooth operation of the elevator based on the velocity of the motor and the secondary magnetic flux value.

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Translation of Japan, Kokai, 59-169,717 by Otagaki et al., PTO 94-2634.

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