Mine hoist control method and apparatus

Details Mine hoist control method and apparatus Mine hoist control method and apparatus

1986-11-04

1988-08-02

Ro, Bentsu

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Plural, diverse motor controls for different motors

318 62, H02P 546, H02P 154

Patent

active

047615893

ABSTRACT:
A method of controlling a pair of hoist motors comprises delaying one about to raise a load while allowing the other to lower its load until a steady speed is reached, and then raising the load with the first motor. The regenerative current from the motor lowering its load at steady speed is offset against the drive current required for the motor raising its load.

REFERENCES:
patent: 3226618 (1965-12-01), Evans
patent: 4289997 (1981-09-01), Jung et al.

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