Elevator battery charging control

Details Elevator battery charging control Elevator battery charging control

1982-10-12

1984-06-26

Rubinson, G. Z.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

320 13, B66B 500, H02J 714

Patent

active

044560974

ABSTRACT:
An elevator system is battery powered. The battery is charged by a battery charger and also regenerated by a polyphase motor which drives the car and which is inverter operated. The charge on the battery is controlled by sensing the battery voltage and, if the voltage is excessive for an interval of time, applying a load to the battery for an interval of time. The battery voltage may also be sensed by controlling the battery discharge in proportion to the excess voltage.

REFERENCES:
patent: 4281278 (1981-07-01), Bilsky et al.
patent: 4316097 (1982-02-01), Reynolds
patent: 4325010 (1982-04-01), Lowndes
patent: 4376471 (1983-03-01), Uchino et al.
patent: 4395639 (1983-07-01), Bring
patent: 4409525 (1983-10-01), Hartwig

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