Rotary frequency-changer

Details Rotary frequency-changer Rotary frequency-changer

1975-07-21

1977-07-12

Shoop, William M.

Electric power conversion systems

Frequency conversion without intermediate conversion to d.c.

312250, 361384, 363141, 361379, H02M 700

Patent

active

040357112

ABSTRACT:
A frequency-changer comprising an air-cooled rotary frequency converter having a shaft which carries a rotor of a fan arranged to cool the converter by forced ventilation. The converter is located in a sound-proofed housing through which forced air flow produced by the fan is passed. The housing defines above the converter a chamber through which the air is guided to flow in the opposite direction to the air flow through the converter. The chamber has an upright baffle at each end and is divided into two compartments by a wall extending through the chamber parallel with the axis of rotation of the converter. Controls for the converter are accommodated in the compartments.

REFERENCES:
patent: 3234451 (1966-02-01), Diebold
patent: 3482894 (1969-12-01), Pryor
patent: 3621339 (1971-11-01), Hodgson
IBM Technical Disclosure Bulletin, "Air Cooling for Data-Processing Systems", J. F. DeJong, vol. 15, No. 12, May 1973.

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