Core Loss Calculation of Nanocrystalline High-Frequency Transformer Under Non-Sinusoidal Excitation

Accurate calculation of core loss under non-sinusoidal excitation (NSE) is crucial for the optimal design of high-frequency transformers (HFTs). In this paper, a Generalized Waveform coefficient Steinmetz Equation (GWcSE) is proposed, which accounts for the rate of change in magnetic flux intensity, providing a more accurate model for calculating core losses under NSE conditions. The validity and effectiveness of the proposed method are demonstrated by comparing analytical values derived from the measurements. Compared with the traditional WcSE, this method improves the loss calculation accuracy by 6.23%.