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Calculation and analysis of the loss and heat on damper bars in large tubular hydro-generator

Liao Y., Fan Z.-N., Han L., Xie L.-D.

Archives of Electrical Engineering

2013

Vol. 62, nr 1

43-54

In order to research the losses and heat of damper bars thoroughly, a multislice moving electromagnetic field-circuit coupling FE model of tubular hydro-generator and a 3D temperature field FE model of the rotor are built respectively. The factors such as rotor motion and non-linearity of the time-varying electromagnetic field, the stator slots skew, the anisotropic heat conduction of the rotor core lamination and different heat dissipation conditions on the windward and lee side of the poles are considered. Furthermore, according to the different operating conditions, different rotor structures and materials, compositive calculations about the losses and temperatures of the damper bars of a 36 MW generator are carried out, and the data are compared with the test. The results show that the computation precision is satisfied and the generator design is reasonable.

Analysis of the Loss and Heat on Damper Bars in Large Tubular Hydro-Generator base on the 3D Electromagnetic-Temperature field Calculation

Liao Y., Fan Z., Han L., Xie L.

Przegląd Elektrotechniczny

2012

R. 88, nr 5b

97-100

In order to research the losses and heat of damper bars thoroughly, a 3D moving electromagnetic field FE model of tubular hydrogenerator and a 3D temperature field FE model of the rotor are built respectively. Furthermore, according to the different operating conditions, the compositive calculations about the losses and temperatures of the damper bars of a 36MW tubular hydro-generator are carried out, and the data are compared with the test. The results show that the computation precision is satisfied.

Badano straty i nagrzewanie w prętach tłumika hydrogeneratora wykorzystując 3D model elektromagnetyczny. Badano rozkład temperatury oraz pola elektromagnetycznego.