Calculation of leakage inductance for high-frequency transformers
Hurley, William Gerard
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Ouyang, Ziwei; Zhang, Jun; Hurley, William Gerard (2015). Calculation of leakage inductance for high-frequency transformers. IEEE Transactions on Power Electronics 30 (10), 5769-5775
Frequency-dependent leakage inductance is often observed. The high-frequency eddy current effects cause a reduction in leakage inductance. The proximity effect between adjacent layers is responsible for the reduction of leakage inductance. This paper gives a detailed analysis of high-frequency leakage inductance and proposes an accurate prediction methodology. High-frequency leakage inductances in several interleaved winding configurations are also discussed. Interleaved winding configurations actually give a smaller degree of reduction of leakage induction at high frequency. Finite-element analysis simulation and measurement validate the models.