Modeling of solenoidal transformer for the calculation of leakage inductance using eddy-current reaction field

The design of high-frequency power converter is very difficult because the leakage inductance of the transformer affects the performance. With consideration of the high-frequency eddy current, the flux linkage due to the eddy-current reaction field using a proposed summation calculation method is computed. The leakage inductance of a high-frequency transformer is therefore characterized. An optimum design method of the transformer can be obtained. Experimental results confirm the affectivity of the calculation method.