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.

[1]  K.J. Chen,et al.  A Physical Model for On-Chip Spiral Inductors With Accurate Substrate Modeling , 2006, IEEE Transactions on Electron Devices.

[2]  Michael A. E. Andersen,et al.  Optimal Design and Tradeoff Analysis of Planar Transformer in High-Power DC–DC Converters , 2012, IEEE Transactions on Industrial Electronics.

[3]  Hervé Morel,et al.  Development of a physically-based planar inductors VHDL-AMS model for integrated power converter design , 2014 .

[4]  P. L. Dowell,et al.  Effects of eddy currents in transformer windings , 1966 .

[5]  Nicola Delmonte,et al.  Thermal modeling of planar transformer for switching power converters , 2010, Microelectron. Reliab..

[6]  W. H. Wolfle,et al.  Optimized design of LLC resonant converters incorporating planar magnetics , 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[7]  Jun Zhang,et al.  Leakage Inductance Calculation for Planar Transformers With a Magnetic Shunt , 2014, IEEE Transactions on Industry Applications.

[8]  Zhe Zhang,et al.  Analysis of planar E+I and ER+I transformers for low-voltage high-current DC/DC converters with focus on winding losses and leakage inductance , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.

[9]  T. X. Wu,et al.  Modeling and design optimization of planar power transformer for aerospace application , 2009, Proceedings of the IEEE 2009 National Aerospace & Electronics Conference (NAECON).

[10]  M. Kazimierczuk,et al.  Comparison of various methods for calculating the AC resistance of inductors , 2002 .