Emergency drive device for an A.C. elevator

Described is an emergency drive device for an A.C. elevator which comprises; and alternating current motor for driving a car, an inverter for converting a direct current into an alternating current of variable frequency and supplying the resulting alternating current to said alternating current moto...

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Bibliographic Details
Main Author NOMURA; MASAMI
Format Patent
LanguageEnglish
Published 27.11.1984
Subjects
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
GENERATION
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
SYSTEMS FOR STORING ELECTRIC ENERGY
TRANSPORTING
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Summary:Described is an emergency drive device for an A.C. elevator which comprises; and alternating current motor for driving a car, an inverter for converting a direct current into an alternating current of variable frequency and supplying the resulting alternating current to said alternating current motor, and an emergency power source connected across input terminals of the inverter with the same polarity as said input terminals and designed to supply direct current power to the drive device.
Bibliography:Application Number: US19820410598