This paper describes a useful analyzing method of saturatable magnetic flux flowing in rotating machines which considers higher harmonic sequences. Conventional analysis based on permeance distributions can calculate higher harmonic flux, however, it can not easily analyze saturatable higher harmonic flux quantitatively. The numerical field analysis method can calculate higher harmonic flux under the saturatable condition. But numerical approaches need large computation times generally, and they are not suited to consideration of the mechanism of higer harmonic generation under the saturatable condition. In order to analyze quantitative higher harmonic sequences of magnetic flux under the saturatable condition for practical use, an analysis based on permeance distribution is needed.
The authors propose a practical method for analysis of higher harmonic seqences of the saturatable magnetic flux quantitatively. They are calculated by generation of saturatable permeance distribution quantitatively. The analytical results show good agreement with the experimental results and confirm the ability and usefullness of the method for analyzing saturatable characteristics of the magnetic flux distribution.
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