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The modeling and reduction of the iron loss is increasingly concerned in both analysis and design of large electromagnetic devices under today's extreme excitations. With the development of the HVDC transmission system, the ac power transformer near the HVDC system is often affected by the dc current, which will flow into the windings through earthed neutrals. A laminated iron core under ac-dc hybrid...
The effect of the variation of B-H properties obtained by different means and data access modes on iron loss and flux in grain oriented (GO) silicon steel laminations is investigated under different exciting frequencies in order to determine an efficient numerical approach to model the lamination configurations. The computational and experimental results are demonstrated on benchmark models in which...
The effect of the B-H and Bm-Wt curves under different dc-biased magnetization on iron loss and flux in Si-Fe lamination obtained by a laminated core model is investigated, which has been demonstrated via the numerical modeling results based on model.
The effect of the variation of B-H properties obtained by different means and data access modes under different exciting frequencies on iron loss and flux in GO silicon steel laminations is investigated, and the results of the numerical modeling is demonstrated on a benchmark model.
This paper investigates the additional iron loss generated in the laminated silicon sheets of the core or the magnetic shields of large power transformers due to the leakage flux. A verification model is well established, and an efficient analysis method is implemented and validated. Both the magnetic and electric anisotropy of the oriented silicon steel sheets are taken into account in 3-D FEM eddy...
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