Research on Harmonic Features of High - Power Doubly - fed Hydro - generator
نویسندگان
چکیده
In order to accurately calculate the generator loss, point out the distribution of generator loss and reveal the effect of harmonic magnetic field and other factors to generator loss. In this paper, a 6.5 MW doublyfed hydro-generator was taken as an example. Time–stepping finite element method was adopted for the numerical simulation of electromagnetic field in generator, and Matlab was used for the Fourier analysis of electromagnetic field in the generator. This paper gave the distribution characteristics of generator loss in different structures, and pointed out the key factor of affecting generator loss. Based on the numerical study results, the generator electromagnetic fields were compared and analyzed when generator used skewed slot, magnetic slot wedge and both skewed slot and magnetic slot wedge. The result that both skewed slot and magnetic slot wedge structure has most benefit to the generator was got. Copyright © 2014 IFSA Publishing, S. L.
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