Magnetic drive control system for a multiple cooling fan install

Details Magnetic drive control system for a multiple cooling fan install Magnetic drive control system for a multiple cooling fan install

1987-11-27

1989-01-10

Ro, Bentsu

Electricity: motive power systems

Switched reluctance motor commutation control

318 9, 318558, 123 4149, 464 29, F16D 300, H02P 602

Patent

active

047976004

ABSTRACT:
A multiple cooling fan installation in which a master fan is driven by a brushless electric drive motor, and at least one slave fan having blades positioned adjacent the blades of the master fan is driven by magnetic coupling between such adjacent blades. Synchronism of rotation between the master and slave fans is ensured by generating a speed command N.sub.cmd for the master fan drive motor in relation to position feedback from the slave fan(s) so that the speed of the master fan is increased in relation to the ability of the slave fan(s) to follow in step with the master fan.

REFERENCES:
patent: 2559416 (1951-07-01), Findley
patent: 2885873 (1959-05-01), Beeston
patent: 2943216 (1960-06-01), Spodig
patent: 3458122 (1969-07-01), Andriussi et al.
patent: 3715171 (1973-02-01), Kettner
patent: 4459087 (1984-07-01), Barge
patent: 4658595 (1987-04-01), Shimada et al.

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