Elevator control system

Details Elevator control system Elevator control system

1995-12-21

1997-12-16

Nappi, Robert

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

318721, 187290, B66B 128, H02P 100

Patent

active

056988230

ABSTRACT:
An elevator control system employs dynamic braking and achieves reduced energy consumption as compared to known elevator control systems. A synchronous motor using a permanent magnet is used as a hoist machine. A contactor short circuits the input terminals of the synchronous motor via a resistor. If an emergency stop is triggered while an elevator car is opened for passengers to enter or exit, the contactor short circuits the input terminals of the synchronous motor.

REFERENCES:
patent: 4649331 (1987-03-01), Jahns
patent: 5021724 (1991-06-01), Hirano et al.
patent: 5241255 (1993-08-01), Oshima et al.
patent: 5285029 (1994-02-01), Araki
Mitsubishi Electric Corporation Technical Paper vol. 67, No. 10, pp. 28-32, 1993. (English Abstract attached).

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