Cooling system for electrical machine

Details Cooling system for electrical machine Cooling system for electrical machine

1985-07-18

1988-06-28

Davis, Jr., Albert W.

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

165 34, 310 53, 310 59, 310 54, 310 64, 310 68C, H02K 900

Patent

active

047532840

ABSTRACT:
A hydraulic circuit branch of a cooling system in thermal contact with the stator winding of a hydraulic power generator is provided with a feed tube divided into two separate input tube sections. The downstream ends of the input tube sections are connected to respective multiplicities of subsidiary hydraulic circuit branches in the form of winding bars via a pair of semicircular manifolds. The current throughput through the winding bars is monitored by determining the difference between the rates of coolant flow through the approximately identical input tube sections. If the rates of coolant flow or throughputs in the input tube sections differ from one another by an amount which itself differs from a predetermined reference value by more than a preselected threshold, a warning signal is generated indicating that heat removal from the hydraulic power generator is being impaired.

REFERENCES:
patent: 2970232 (1961-01-01), Kilbourne
patent: 3089969 (1963-05-01), Wiedemann
patent: 3167113 (1965-01-01), Kleiss
patent: 3755702 (1973-08-01), Willyoung
patent: 4008755 (1977-02-01), Vandamme
patent: 4190829 (1980-02-01), Schmitt et al.
patent: 4370800 (1983-02-01), Kuzmin et al.
Kurt Baltisberger et al., "Betriebsfahrungen mit vollstandig Wassergekuhlten Schenkelpolmaschinen", 1971, Brown Boveri Mitt., pp. 18-24.

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