Modeling and simulation of a high-frequency planar power transformers

Planar magnetic components used for energy conversion is crucial elements in power conversion application. Particularly, planar transformer printed on circuit board is characterized by the high efficiency, high power density, low weight and small size. Therefore, designed power conversion systems are needs prototype. But, planar transformer model is still not available in power simulator tools. Therefore, there is a limitation during the simulation process of power systems. This paper focuses on the development of a high frequency planar transformer model. The planar transformer model remains a complex device to model, the magnetizing inductance, the leakage inductance of primary and secondary windings, the skin and proximity effects in windings and the parasitic capacitances effects are taken into account. A comparative study between FEM simulation results and simulation model is established and found excellent agreement. Validity domains are discussed.