Thank you for your comments edison123 and electricpete . I really appreciate them.
We already have done this test. Although the generator is not excited the axial movement is still present.
We are thinking that this situation (with or without excitation) is not valid for a true test because...
Thank you Edison123 for the link.
After your explanation I pretty sure that our bearing is this "Momentary-use bumper" you are talking about. I mean, for sure it was not design for a continuous axial contact and your description fit on it (See the file attached)
We didn't check for it yet...
Which are the possible problems for a issue in a magnetic center since this generator have been operating for 10 ou more years ?
I was thinking that magnetic center is a project concept, regarding equilibrium of magnetic forces. Can it change with a long operation time ?
I was talking about...
Hello guys,
We are facing an interesting problem in a synchronous generator (4 Poles , 1800 RPM , nominal power 6.5 MW) driven by a gas turbine and gearbox. The shaft is presenting an axial movement (~1,5 Hz) when the load is about 1.6 MW.
Apparentely, the load (active or reactive) in...
