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The National Academy of Sciences of Ukraine

The Institute of Electrodynamics

About Institute



K.A. Kuchynskyi, V.O. Titko, M.S. Hutorova, V.A. Mystetskyi
Institute of Electrodynamics of the National Academy of Sciences of Ukraine,
Peremohy, 56, Kyiv-57, 03680, Ukraine

A model is developed for calculating the mechanical characteristics in pressure fingers and plates for defects in pressing the stator core of a turbogenerator in the tooth zone, incl. when the finger is bent. The model makes it possible to determine the frequency of oscillation of the system at the initial moment of the sudden appearance of defects, as well as the characteristics in the steady-state operating mode. Test calculations of mechanical characteristics in the fingers and in the slabs at the area of their contact when the finger is bent. References 10, figures 6, table 1.
Key words: turbogenerator, modeling, laminated magnetic circuit, stator core, tooth zone, pressure fingers, mechanical stresses, forces, linear elongation.

1. Vaskovskyi Yu.N., Shumilov Yu.A., Shtogrin A.V. Simulation of a process of tooth fatigue destruction of extreme packages of stator core of heavy turbogenerators. Visnyk ХПІ. 2009. P. 22-28. (Rus)
2. Kuznetsov D.V. Development of the research methods of processes in the mounts of stator core to the turbogenerator cases and improvement of their diagnostics in the operating conditions. Diss. abstract ... candidate of technical sciences. Moskva, 2009. 25 p. (Rus)
3. Mystetskyi V.A. Mathematical model and calculation procedure of the forces in the coupling prisms of stator core of turbogenerator in the presence of defects based on the method of a perfectly rigid body. Pratsi Instytutu elektrodynamiky NAN Ukrainy. 2013. No 34. P. 34-41. (Rus)
4. Nazolin A.L. Detection of machines’ and mechanisms’ defects of a cyclic action by time and vibroacoustic parameters. Diss. abstract ... doctor of technical sciences. Moskva, 2013. 32 p. (Rus)
5. Determination of the moments of bodies inertia, which have a simplest geometric shape. Access mode:
6. Development of the improvement methods of mechanical stability of tooth-slotting imbricated core of the stators of turbogenerators of thermal and nuclear power plants to ensure high performance reliability in operating conditions. Instytut elektrodynamiky NAN Ukrainy; No DR 0116U006640. Kyiv, 2016. 46 p. (Ukr)
7. Tytko O.I., Kramarskyi V.A., Mystetskyi V.A. Mathematical modeling of vibration processes in the mounting system of stator core of turbogenerator at a sudden breakages of coupling prisms. Pratsi Instytutu elektrodynamiky NAN Ukrainy. 2016. No 44. P. 43-50. (Ukr)
8. Tytko O.I., Mystetskyi V.A. Analysis of an effect of the number of destroyed stator pins of turbogenerator on mechanical characteristics of the coupling prisms. Pratsi Instytutu elektrodynamiky NAN Ukrainy. 2015. No 40. P. 85-90. (Ukr)
9. Firsanov E.P. Investigation of thermomechanical processes in a one-dimensional system of straight mechanically-connected rods. Access mode:
10. Electrical Machines, Drives, and Power Systems 5E Theodore Wildi Professor Emeritus, Laval University. New Jersey Columbus, Ohio. 2002. Vol. 5. 907 p.