Electromagnetic (EM) analysis of hydropower generators is
common practice but there is little emphasis on studying the effect of rotor
whirling in the analysis. This paper explores the effect on electromagnetic
analysis as the rotor is allowed to whirl both in forward and in
backward directions under no-load conditions. As a hydropower generator
rotor shaft can experience whirling when under eccentric operation,
the objective is to examine how whirling can affect the unbalanced
magnetic pull (UMP), flux densities, damper currents, and ohmic losses
in a synchronous hydropower generator. These results are obtained in
a commercial FEM-based EM field modelling software package that
allows various degrees of freedom in motion types and multiple motion
components to be set. It is seen that backward whirling tends to induce
higher eddy currents than forward whirling does.
eccentricity electromagnetic simulations hydropower rotor no-load whirl
Birincil Dil | İngilizce |
---|---|
Konular | Mühendislik |
Bölüm | Araştırma Makalesi |
Yazarlar | |
Yayımlanma Tarihi | 30 Aralık 2015 |
Yayımlandığı Sayı | Yıl 2015 Cilt: 3 Sayı: 3 |
All articles published by BAJECE are licensed under the Creative Commons Attribution 4.0 International License. This permits anyone to copy, redistribute, remix, transmit and adapt the work provided the original work and source is appropriately cited.