Iron loss in a transformer comprises hysteresis loss ($P_h$) and eddy current loss ($P_e$). Hysteresis loss is approximately proportional to frequency ($P_h \propto f$) or to the power of while eddy current loss is proportional to the square of frequency ($P_e \propto f^2$).
The total iron loss in a transformer core at normal flux density was measured at 25 Hz and at 50 Hz and was found to be 250 W and 800 W respectively. The hysteresis loss at 50 Hz would be
Asked in GS&EI ElectEngg 14 2024 1601 2025 · Topic: Heat and Thermodynamics (Modes of Heat Transfer (Conduction, Convection, Radiation))
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