Vamas Intercomparison of AC Loss Measurement: Japanese Results

K Itoh,T Ogasawara,D Ito,K Yamafuji,M Umeda,E Yoneda,S Akita,M Iwakuma,K Tachikawa,K Watanabe,Y Kimura,T Ando,A Nagata,Y Kubota,H Wada

doi:10.1007/978-1-4613-9880-6_26

Vamas Intercomparison of AC Loss Measurement: Japanese Results

K Itoh, T Ogasawara + Show 13 more

https://doi.org/10.1007/978-1-4613-9880-6_26

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Publication Date: Jan 1, 1990

Citations: 5

Affiliation: Nihon University, Toshiba (Japan), Kyushu University, Japan Oil Gas and Metals National Corporation (Japan), Central Research Institute of Electric Power Industry, Tokai University, Tohoku University, Japan Atomic Energy Agency, Akita University

#Ac Losses #Coupling Time Constant + Show 8 more

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Abstract

The first worldwide round robin test on ac losses was carried out, where 10 Japanese labs participated. 4 test samples, D, E, F and G, were prepared, and ac losses were measured as a function of either applied field amplitude or transport current. A variety of measurement methods were adopted, and an interim intercomparison of the results was made in terms of the hysteresis loss for 0 to 1 T field cycle as well as the coupling time constant. The standard deviation in hysteresis loss among labs including those of US and European labs so far reported was about 10 % for both high loss samples D and E. Time constants obtained among labs were in a relatively poor agreement with each other.

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