Smooth-poles generators of electrical power plants are flexible and this causes the eccentricity of the rotor with respect to the stator. The consequent air-gap asymmetrical distribution causes the phenomenon of the unbalanced magnetic pull (UMP). In this paper a non-linear model for the calculation of the UMP in synchronous electric machines is applied to a four-poles turbo-generator of 900 MVA, by taking into account not only the radial component of the electromagnetic stresses but also the tangential one.
Dynamic behaviour of a four-poles turbo generator with rotor eccentricity
FROSINI, LUCIA
2007-01-01
Abstract
Smooth-poles generators of electrical power plants are flexible and this causes the eccentricity of the rotor with respect to the stator. The consequent air-gap asymmetrical distribution causes the phenomenon of the unbalanced magnetic pull (UMP). In this paper a non-linear model for the calculation of the UMP in synchronous electric machines is applied to a four-poles turbo-generator of 900 MVA, by taking into account not only the radial component of the electromagnetic stresses but also the tangential one.File in questo prodotto:
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