A practical core loss calculation method of filter inductors in PWM inverters based on the modified Steinmetz equation

In this paper, a practical core loss calculation method based on the modified Steinmetz equation is proposed. It calculates the low-frequency losses and the high-frequency losses separately. By utilizing the curves of permeability versus DC bias provided by core vendors instead of plenty tests, the paper establishes a relation between the DC bias and the core losses. A novel model of minor loops is proposed to calculate the high-frequency losses based on the simulation results and Steinmetz parameters of cores. The low-frequency loss is analyzed in depth from the hysteresis curves in the B-H plane. The calculated results are verified by measuring the core losses of the filter inductor in a three-level NPC inverter. The proposed model can be derived without any test. Meanwhile, the detailed low-frequency loss calculation is presented. Moreover, the influence of DC bias is also taken into consideration to improve the accuracy. The proposed method is practical and accurate to predict the core losses.

[1]  Jie Geng,et al.  Dynamic Preisach model and inverse compensation for hysteresis of piezoceramic actuator based on neural networks , 2010, Proceedings of the 29th Chinese Control Conference.

[2]  Charles R. Sullivan,et al.  Accurate prediction of ferrite core loss with nonsinusoidal waveforms using only Steinmetz parameters , 2002, 2002 IEEE Workshop on Computers in Power Electronics, 2002. Proceedings..

[3]  K. H. Carpenter,et al.  A differential equation approach to minor loops in the Jiles-Atherton hysteresis model , 1991 .

[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]  Zhihong Bai,et al.  A novel hysteresis loss calculation method of filter inductor in PWM inverters , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[6]  P. Tenant,et al.  Dynamic model of magnetic materials applied on soft ferrites , 1998 .

[7]  T. Shimizu,et al.  Loss evaluation of AC filter inductor core on a PWM converter , 2011, 8th International Conference on Power Electronics - ECCE Asia.

[8]  J. Biela,et al.  Core Losses Under the DC Bias Condition Based on Steinmetz Parameters , 2012, IEEE Transactions on Power Electronics.

[9]  A. Brockmeyer.  Experimental evaluation of the influence of DC-premagnetization on the properties of power electronic ferrites , 1996, Proceedings of Applied Power Electronics Conference. APEC '96.

[10]  Yim-Shu Lee,et al.  Simple approximations of the DC flux influence on the core loss power electronic ferrites and their use in design of magnetic components , 1997, IEEE Trans. Ind. Electron..

[11]  Toshihisa Shimizu,et al.  A Practical Iron Loss Calculation for AC Filter Inductors Used in PWM Inverters , 2009, IEEE Transactions on Industrial Electronics.

[12]  S. Iyasu,et al.  A novel iron loss calculation method on power converters based on dynamic minor loop , 2005, 2005 European Conference on Power Electronics and Applications.

[13]  R. D. De Doncker,et al.  Calculation of losses in ferro- and ferrimagnetic materials based on the modified Steinmetz equation , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[14]  D Buecherl,et al.  Iron loss modeling by complex inductances for steady state simulation of electrical machines , 2010, SPEEDAM 2010.

[15]  Harry A. Owen,et al.  High-frequency measurement techniques for magnetic cores , 1985, 1985 IEEE Power Electronics Specialists Conference.

[16]  Alex Van den Bossche,et al.  Ferrite losses of cores with square wave voltage and dc bias , 2006 .

[17]  T. Shimizu,et al.  Evaluation of the iron loss of an inductor based on dynamic minor characteristics , 2007, 2007 European Conference on Power Electronics and Applications.

[18]  Francois Costa,et al.  Current measurement in static converters and realization of a high frequency passive current probe (50 A-300 MHz) , 2002 .