Underexcited Operation of Turbogenerators

Adams, C. G.; McClure, J. B.

doi:10.1109/t-aiee.1948.5059704

Cited by 12 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tendency of heating of the end regions of turbogenerators with low field current and rated stator current was recognized in 1920 [1]. The problem has not drawn as much public attention for salient pole synchronous generators as for non-salient pole synchronous generators since salient pole generators lack the retaining ring guiding the flux axially.…”

Section: Introductionmentioning

confidence: 99%

Axial Magnetic Fields at the Ends of a Synchronous Generator at Different Points of Operation

Marcusson

Lundin

2015

IEEE Trans. Magn.

View full text Add to dashboard Cite

Axial magnetic fields leaking out at the ends of a conventional rotating synchronous machine cause losses. Therefore, it is important to be able to predict the axial magnetic fields. A linear steady-state model for the axial magnetic flux density phasor in the end regions of non-salient synchronous generators has previously been verified experimentally. This paper describes an extension of the model to salient pole synchronous generators and a method for calculating the coefficients. Experiments and 3-D finite element simulations justify a distinction between axial flux density contributions from the d and q components of the stator current. How the coefficients and the axial magnetic fields in the ends of a small synchronous generator change with steady-state operation conditions is here shown with measurements and to some extent with 3-D finite element simulations.Index Terms-Axial magnetic flux, hydropower generator, operation conditions.

show abstract

Section: Introductionmentioning

confidence: 99%