Overloss coefficient in magnetic laminations during PWM supply voltage

• Autorzy: Zakrzewski K.
• Języki publikacji: EN

Abstrakty

EN

Author presents an analytical method of calculation of unit power losses in magnetic laminations used in electrical machines and transformers. The idea of this method, based on the solution of Maxwell's equations in the lamination material, was described by the author in the previous work [3], taking into account approximation of constitutive static hysteresis loop by elliptic form of the function B = f(H) depending on magnetic saturation. In the previous formula for new isotropic and anisotropic materials it is needed to introduce so called "anomaly coefficient" deduced from the comparison of measured and calculated value of power losses in arbitrary excitation frequency for assumed induction. The method was tested by comparison with the results of experiments presented in commercial catalogues [1, 2]. Assuming superposition of harmonic power losses it is possible to enlarge this method for the estimation of overloss coefficient in dynamo sheet during axial magnetization with nonsinusoidal flux generated e.g. by PWM voltage supply.

Słowa kluczowe

EN

magnetic laminations; power losses; PWM voltage

PL

blacha magnetyczna; straty mocy; PWM

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2010
• Tom: Vol. 59, nr 3-4
• Strony: 169--176
• Opis fizyczny: Bibliogr. 5 poz., rys., tab.

Twórcy

autor

Zakrzewski K.

• Institute of Mechatronics and Information Systems, Technical University of Lodz,

Bibliografia

• [1] Catalogue, Silicium Magnetic Steel, Metalurgy Company Bochnia Poland. (1982) (in Polish).
• [2] Catalogue, Electrical Steel and Strip. The Steel Company of Wales Ltd. Newport (1966).
• [3] K. Zakrzewski, Berechnung der Wirk- und Blindleistung in einem ferromagnetischen Blech unter Berücksichtigung der komplexen magnetischen Permeabilität. Wiss. Z. TH Ilmenau 16, H.5: 101-105 (1970).
• [4] K. Zakrzewski, Method of calculation of unit power losses and reactive power in magnetic laminations in a wide range change of induction and frequency. Proc. of International Symposium on Electromagnetic Fields in Electrical Engineering ISEF’99,Pavia, September 23-25 (1999): 208-211.
• [5] K. Zakrzewski, Overloss Coefficient for Dynamo Sheet during Axial Magnetization with Nonsinusoidal Flux. Archives of Electrical Engineering XLVI(3): 355-356 (1997).