Rotating field in induction motor under consideration of anisotropy and cutting strains of steel sheets

• Autorzy: Zagradisnik I. , Slemnik B.
• Języki publikacji: EN

Abstrakty

EN

The rotating magnetic field in a symmetrical induction machine supplied with a sine-shaped and balanced system shows an asymmetrical shape if the magnetic medium is anisotropic. The shape of the air gap magnetic flux distribution is repeated twice per one revolution of the rotating field in a two-pole machine. The harmonic analyses show that all components rotate with variable magnitudes and non-uniform speeds. The variations are greater if the order of the component is higher. Only odd harmonics occur. Due to the spatial dependence of reluctance and the electric voltage balance in an induction machine, the magnetizing current also shows a spatial dependence.

Słowa kluczowe

EN

air gap; harmonic analysis; machine theory; magnetic anisotropy; magnetic circuit; magnetic field; magnetic flux; magnetisation; induction motor; asynchronous machine; anisotropy

PL

szczelina powietrzna; analiza harmoniczna; teoria maszyny; anizotropia magnetyczna; obwód magnetyczny; pole magnetyczne; strumień magnetyczny; magnetyzacja; silnik indukcyjny; maszyna asynchroniczna; anizotropia

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Journal of Technical Physics
• Rocznik: 2002
• Tom: Vol. 43, no 4
• Strony: 521--525
• Opis fizyczny: Bibliogr. 8 poz., rys., wykr.

Twórcy

autor

Zagradisnik I.

• University of Maribor, Faculty of EE and CS, Smetanova 17, SI - 2000 Maribor, Slovenia

autor

Slemnik B.

• University of Maribor, Faculty of EE and CS, Smetanova 17, SI - 2000 Maribor, Slovenia

Bibliografia

• 1. B. Hribernik, Influence of cutting strains on the magnetic anisotropy of fully processed silicon Steel, J.M.M.M., 26, 72-74, North-Holland 1982.
• 2. B. Hribernik, Influence of cutting strains on the magnetic anisotropy of semi-processed silicon steel without silicon, J.M.M.M., 26, 75-78, North-Holland 1982.
• 3. Euronorm 106
• 4. B. Hribernik, Influence of cutting strains and magnetic anisotropy of electrical steel on the air-gap flux distribution of an induction motor, J.M.M.M., 41, 427-430, North-Holland 1984.
• 5. I. Zagradišnik, B. Hribernik, CAD representation of single-phase squirrel-cage induction motors for special purposes, International Conference Design to Manufacture in Modern Industry, Proceedings Part 2, 653-657, 7-9 June, Slovenija-Bled 1993.
• 6. B. Hribernik, A. Hamler, M. Trlep, Investigations of conditions on magnetic circuit of three phase induction motors caused by a real ferromagnetic material, International conference on electrical machines, ICEM Proceedings III, pp. 1157-1160, Lausanne, Switzerland 1984.
• 7. I. Zagradišnik, B. Hribernik, IEEE Trans. Mag. 24, 491-494, 1988.
• 8. J. Sievert, H. Ahlers, M. Binkfeld, B. Cornut, F. Fiorillo, K.A. Hempel, T. Kochmann, A. Kedus-Lebouc, T. Meydah, A. Moses, A.M. Rietto, European intercomparison of measurement of rotational power loss in electrical sheet steel, J.M.M.M., 160, 115-118, North-Holland 1996.