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Talks and Poster Presentations (with Proceedings-Entry):

F. Hofbauer, H. Pfützner, G. Shilyashki, D. Sabic, E Mulasalihovic, V. Galabov:
"Rise-of-temperatur Method for Building Factor Distribution in 1-Phase Model Transformer Core Interior Considering High DC Bias";
Poster: International Workshop on 1&2 Dimensional Magnetic Measurement and Testing, Wien, Österreich; 2012-09-03 - 2012-09-06; in: "Short Paper Proceedings", (2012), ISBN: 3-902-105-03-8; 57 - 58.



English abstract:
Loss distributions of transformer cores are affected by z-flux effects if considered for the core surface. Here we propose the application of a thermal sensor which is inserted to the core interior through one of 16 channels of 2 mm width. Measurements were made on a 1-phase core assembled from laser-scribed SiFe. Throughout the core, the local building factor BF proved to increase towards the perphery which can be interpreted by interactions of highest anisotropy and non-linearity. Additional DC superposition yields non-uniform increases of BF at different core positions. Local losses tend to become more balanced - measurement locations with a priori high BF experience lower percentage increases, being more robust with respect to DC components.

Created from the Publication Database of the Vienna University of Technology.