Flux Simulation on 100kVA Three-Phase Transformer Core

Abstract

This paper describes the flux distribution on 100kVA 3phase distribution transformer assembled with 60-45 T-Joint and mitred lap corner joint with stragger yoke and limb. The core material that used is 3% silicon iron Cold Rolled Grain Oriented (CRGO) material. The flux distributions have been simulated using 2 (two) Dimensions Finite Element Method (2DFEM) based on a vector potential formulation. In order to find the loss of magnetization of transformer core lamination used the hysteresis curve of core material. The result of this simulation was 1,78 T Flux density maximum at the center limb of transformer core, hence produced the losses of 2.54W/kg.