Device for driving elevator at service interruption

Details Device for driving elevator at service interruption Device for driving elevator at service interruption

1992-06-10

1994-02-08

Skudy, R.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187119, 363 37, 363 98, H02J 906, H02M 5452, H02M 7758

Patent

active

052850293

ABSTRACT:
The device for driving an elevator at the time of a service interruption according to the present invention has a circuit for varying d-axis magnetic flux command to prevent regeneative power that can damage the elements in an inverter from being generated at the time of an interruption eliminating the need for a regenerative power consumption circuit.

REFERENCES:
patent: 4475631 (1984-10-01), Nomura
patent: 4662478 (1987-05-01), Uchino
patent: 4713595 (1987-12-01), Yonemoto
patent: 5058710 (1991-10-01), Iwasa

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