A modified analytical method for core losses calculation in magnetic laminations for a wide range of frequency and flux density

In this paper, a modified analytical method, based on Maxwell's equations is developed to calculate core losses for a wide range of magnetic flux density and frequency. In this method average permeability from experiments and some available material's features are used to calculate both hysteresis and eddy current losses analytically. This method takes the skin effect into account and the real value of permeability, is defined to improve the method accuracy. The main advantage of this method is its simplicity and accuracy especially for higher values of frequency and magnetic flux density in comparison with the other methods. Finally the simulation results are verified by experimental results.

[1]  G. Bertotti,et al.  Physical interpretation of eddy current losses in ferromagnetic materials. I. Theoretical considerations , 1985 .

[2]  G. Bertotti,et al.  Some considerations on the physical interpretation of eddy current losses in ferromagnetic materials , 1986 .

[3]  G. Bertotti General properties of power losses in soft ferromagnetic materials , 1988 .

[4]  Todd Litman,et al.  Energy-Efficient Electric Motor Selection Handbook , 1990 .

[5]  Helmut Pfützner,et al.  Problems of loss separation for crystalline and consolidated amorphous soft magnetic materials , 1991 .

[6]  G. Bertotti Dynamic generalization of the scalar Preisach model of hysteresis , 1992, 1992. Digests of Intermag. International Magnetics Conference.

[7]  Massimo Pasquale,et al.  Measurement and prediction of dynamic loop shapes and power losses in soft magnetic materials , 1993 .

[8]  M. Amar,et al.  A simple method for the estimation of power losses in silicon iron sheets under alternating pulse voltage excitation , 1994 .

[9]  P. Pillay,et al.  An improved formula for lamination core loss calculations in machines operating with high frequency and high flux density excitation , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[10]  P. Pillay,et al.  Physical Basis for the Variation of Lamination Core Loss Coefficients as a Function of Frequency and Flux Density , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[11]  M. Cheng,et al.  General core loss models on a magnetic lamination , 2009, 2009 IEEE International Electric Machines and Drives Conference.

[12]  P. Pillay,et al.  Advanced testing and modeling of magnetic materials including a new method of core loss separation for electrical machines , 2012, 2011 IEEE Energy Conversion Congress and Exposition.

[13]  P. Pillay,et al.  Novel equipment for the measurement of core losses in laminations for advanced machines , 2011, 2011 IEEE International Electric Machines & Drives Conference (IEMDC).

[14]  Yu Zhang,et al.  Magnetic Characteristics and Core Losses in Machine Laminations: High-Frequency Loss Prediction From Low-Frequency Measurements , 2012, IEEE Transactions on Industry Applications.

[15]  Pragasen Pillay,et al.  A Hybrid Model for Improved Hysteresis Loss Prediction in Electrical Machines , 2014, IEEE Transactions on Industry Applications.