Comparison and design of power electronics transformers in 25 kHz–400 kHz range

The paper presents comparison and design considerations of power electronics transformers in 25 kHz-400 kHz range. Improved design algorithm consisting of 15 steps is applied. Five designs of power transformers under the same input parameters are realized based on different frequencies: 25kHz, 50kHz, 100kHz, 200kHz and 400kHz. The material used is ferrite (N87). The design is aimed at minimizing losses and volume of the component. A set of parameters is defined to compare the obtained design results including operating and construction parameters. The obtained design results are verified by carried out simulations using FEM. Design conclusions and guidelines are derived based on the comparison of the carried out designs regarding the influence of operating frequency on the total parameters of the power transformers.

[1]  Murgatroyd.  Calculation of proximity losses in multistranded conductor bunches , 1989 .

[2]  Gang Chen,et al.  Overview of power loss measurement techniques in power electronics systems , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[3]  A. Van den Bossche,et al.  Practical Wide Frequency Approach for Calculating Eddy Current Losses in Transformer Windings , 2006, 2006 IEEE International Symposium on Industrial Electronics.

[4]  C.R. Sullivan,et al.  Improved calculation of core loss with nonsinusoidal waveforms , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[5]  Yan-Fei Liu,et al.  A Practical Transformer Core Loss Measurement Scheme for High-Frequency Power Converter , 2008, IEEE Transactions on Industrial Electronics.

[6]  Alex Van den Bossche,et al.  Improved Thermal Modelling of Magnetic Components for Power Electronics , 2002 .

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

[8]  Colonel William T. McLyman,et al.  Transformer and inductor design handbook , 1978 .

[9]  Alex Van den Bossche,et al.  Modeling Ferrite Core Losses in Power Electronics , 2006 .

[10]  V. Andonova Anna,et al.  Thermographic Analysis of a Bridge Power Converter , 2015 .

[11]  Charles R. Sullivan,et al.  Computationally efficient winding loss calculation with multiple windings, arbitrary waveforms, and two-dimensional or three-dimensional field geometry , 2001 .