Method of adjusting thermal balance of rotor

Details Method of adjusting thermal balance of rotor Method of adjusting thermal balance of rotor

H - Electricity

02

K

310/19, 341/26

H02K 15/16 (2006.01) G01M 1/16 (2006.01) H02K 9/00 (2006.01)

Patent

CA 1289220

ABSTRACT OF THE DISCLOSURE A method of adjusting a thermal balance of a rotor. When obtaining a difference in shaft- vibration component of the rotor between an actual load condition and a no load condition, on the basis of detection results at a simulated load, a difference in shaft-vibration component of the rotating rotor between a no-load condition and a condition in which the rotor is heated from the outside and a difference in shaft-vibration component of the rotating rotor between a no-load condition and a condition in which the rotor is heated from the inside are detected at the simulated load. The detected differences in shaft- vibration component are converted respectively to differences in shaft-vibration component under a temperature condition at the actual load. Both the converted differences in shaft-vibration component are added to each other in a vector manner to obtain a difference in rotor shaft-vibration component at the actual load. Coolant flow rate at each section within the rotor is so adjusted as to eliminate the difference in rotor shaft-vibration component, thereby adjusting the thermal balance of the rotor.

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