Non-Linear Eddy Current Loss and Thermal Analysis on Transformer Cover

Authors : Mohammad Zia ZAHEDI, İres ISKENDER

Pages : 558-570

View : 16 | Download : 7

Publication Date : 2019-06-01

Article Type : Research Paper

Abstract :High current conductors of transformers cause to produce losses and thermal problems in their tank cover. Finite Difference insert ignore into journalissuearticles values(FD); Method insert ignore into journalissuearticles values(FDM); magnetic analysis is used to find out an exact estimation of the magnetic field and the losses near the bushings in the transient solution, considering the non-linear magnetic permeability of the cover plate, because FDM is more flexible to deal with the nonlinear constitutive law and easy-to-be implemented especially in the case of simple geometry. Finite Element Method insert ignore into journalissuearticles values(FEM); thermal analysis is used to determine the plate temperature based on magnetic FD analysis, taking account non-linear heat flux boundary condition. A calibration procedure is used between the analyses to ensure the precision of assumptions. The reliability of the technique, confirmed by experimental and FEM results.
Keywords : Eddy current loss, Finite Difference method, Finite element simulation, Hot spot temperature, Transformer cover