Hydrogen-cooled rotor for dynamoelectric machine

Details Hydrogen-cooled rotor for dynamoelectric machine Hydrogen-cooled rotor for dynamoelectric machine

H - Electricity

02

K

310/27

H02K 1/32 (2006.01)

Patent

CA 1049080

Abstract of the Disclosure An improved gas cooling system for electric rotary machines is disclosed, especially for high-power and high-speed synchronous machines pro- vided with a cylindrical rotor. By use of the improved system, machines of larger dimensions (power) than those used up to now can be effectively cooled and the change-over to liquid cooling with machines of 1000 - 2000 MW power is rendered unnecessary. In the improved system the known "axial" and "gap pick up" cooling systems are combined. Beneath the coil slots in the rotor, subslots are provided, while in the conductors of the rotor winding, or be- tween them, cooling channels are arranged along cylindrical surfaces coaxial with the shaft of the rotor. Adjacent cooling channels are connected to each other and the cooling channel nearest to the shaft is connected to the respective subslot, whereas the cooling channel farthest from the shaft is connected to axially spaced inlet and outlet ports leading to the airgap of the electric rotary machine.

243787

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