Title :
Mechanical behavior of hydrogenerator endwindings
Author :
Jarosz, Antoine ; Foggia, Albert ; Adam, Jean ; Weis, Hubert ; Charbonnier, Philippe
Author_Institution :
Lab. d´´Electrotech. de Grenoble, CNRS, St. Martin d´´Heres, France
Abstract :
This paper presents experimental investigations on hydrogenerator endwinding vibrations and temperatures. In steady-state operation, links between machine load, winding mechanical characteristics, and temperature are discussed. Viscoelastic properties of coil composite sections are proved. Under transient operation (starting, stop) time frequency analysis is applied to detect machine natural frequencies
Keywords :
hydroelectric generators; machine windings; time-frequency analysis; vibrations; viscoelasticity; coil composite sections; endwinding temperatures; endwinding vibrations; hydrogenerator endwindings; machine load; machine natural frequencies detection; mechanical behavior; steady-state operation; time frequency analysis; transient operation; viscoelastic properties; winding mechanical characteristics; Accelerometers; Condition monitoring; Insulation; Stator cores; Stator windings; Steady-state; Temperature sensors; Vibrations; Viscosity; Voltage;
Conference_Titel :
Electric Machines and Drives, 1999. International Conference IEMD '99
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-5293-9
DOI :
10.1109/IEMDC.1999.769099
