Determining specific power loss in joint area of laminated magnetic core

Kalinin, Yevgeniy, Chivenkov, Alexandr, Vagapov, Yuriy and Anuchin, Alecksey (2021) Determining specific power loss in joint area of laminated magnetic core. In: 28th Int. Workshop on Electric Drives, 27-29 Jan 2021, Moscow, Russia.

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This paper discusses the method of analysis of specific power loss in the joint area of steel laminated core. The method is based on comparison of power loss data obtained from the tests of a circular shape magnetic core. Initially, the core build using uncut (solid) lamination sheets was tested to obtain the loss reference values. Then the laminations were cut onto four sections, and the core was tested again to obtain the loss increase associated with the implemented joint area. The test readings were processed to separate losses due to tangential and normal fluxes in the laminates. The processed data represented as relative p.u. values of increase in specific power loss have been extended to conduct an analysis of a rectangular magnetic core made using anisotropic, grain-oriented silicon electrical steel. The results demonstrated that the power loss produced by the normal magnetic flux dominates in the structure of total power loss in the rectangular core (approx. 85%). The proposed approach utilises the septation of losses produced by tangential and normal fluxes; it can be applied for the analysis of loss in the joint areas of magnetic cores of various power transformers.

Item Type: Conference or Workshop Item (Paper)
Keywords: specific power loss, eddy current loss, hysteresis loss, electrical steel, laminated core
Divisions: Applied Science, Computing and Engineering
Depositing User: Hayley Dennis
Date Deposited: 31 Mar 2021 11:21
Last Modified: 31 Mar 2021 11:21

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