Abstract: This study involves modeling of the transformer core for flux pattern analysis of variant core materials which include metglass, ferrite, soft iron, silicon steel and solid iron under different frequencies and time intervals. The analysis techniques deployed were 2D Finite Element Method (FEM) using Comsol Multiphysics software. FEM was used to determine the various flux pattern of the candidate transformer core materials, while MATLAB was used to simulate the distances between the lines of flux for the respective candidate core materials. The result from the flux pattern mapping shows that the lines of flux in metglass core material are more compact than in the rest candidate materials followed by silicon steel, ferrite core, soft iron and solid iron respectively. The flux pattern mapping was successfully deployed in the selection of a better core material with stronger magnetic field and lower losses. Among the samples considered, metglass gave the least core loss of 0.1 kW, 0.065 kW, 0.14 kW, 0.24 kW, 1.09 kW and 1.36 kW for frequencies of 50 Hz, 100 Hz, 150 Hz, 200 Hz, 500 Hz and 1000 Hz respectively. Keywords: Core Loss, Core Material, Ferrite, Finite Element Method, Frequency, Metglass, Silicon Steel, Soft Iron, Solid Iron, Transformer. Title: PERFORMANCE EVALUATION OF VARIANT TRANSFORMER CORE MATERIALS WITH VARIABLE FREQUENCIES Author: Uzoma Osuji, Chinonso S. Ezeonye, Fabian I. Izuegbunam International Journal of Novel Research in Electrical and Mechanical Engineering ISSN 2394-9678 Vol. 11, Issue 1, September 2023 - August 2024 Page No: 106-114 Novelty Journals Website: www.noveltyjournals.com Published Date: 04-May-2024 DOI: https://doi.org/10.5281/zenodo.11112412 Paper Download Link (Source) https://www.noveltyjournals.com/upload/paper/PERFORMANCE%20EVALUATION%20OF%20VARIANT-04052024-4.pdf