Nebojša Božidar Raičević, Ana Vučković, Mirjana Perić, Slavoljub Aleksić

DOI Number
First page
Last page


A system which contains two or more multilayer solenoid coils is a kernel of step motors. There is a "strong" permanent magnet inside the solenoid coils. The magnet is being moved by the action of electromagnetic field force, which is caused by the coils. Numerical calculations combined with analytical expressions for electromagnetic field strength that exists in the core of step motors, magnetic flux and force on moving magnet, which transforms translational motion into rotational motion, are given in this paper. By comparing with an experimental result, it will be shown that the proposed technique is accurate and effective in calculating both electromagnetic field distribution and strike force of permanent magnet.

Full Text:



K. Nagaya, M. Notoya, N. Sakamoto, T. Fujinaka, H. Hata, J. Zheng, "Spring actuator stacked of iron particles layers with permanent magnet under electromagnetic control," International Journal of Applied Electromagnetics and Mechanics, vol. 26, pp. 133–146, 2007. [Online]. Available:

D. Zivaljevic, S. Aleksic, "Generating homogeneous magnetostatic field inside prolate and oblate ellipsoidal coil," AEU - International Journal of Electronics and Communications vol. 6, no. 10, pp. 637–644, 2007. [Online]. Available:

M. W. Waszak, "Efficient method for eddy current analysis in permanent magnets of electric motors," International Journal of Applied Electromagnetics and Mechanics, vol. 22, pp. 133–139, 2005. [Online]. Available:

Sang-Yong Jung, Ho-Yong Choi, Hyun-Kyo Jung, Song-Yop Hahn, "Phase unbalance compensation in moving-coil type permanent magnet linear synchronous motor," International Journal of Applied Electromagnetics and Mechanics, vol. 19, pp. 213–218, 2004. [Online]. Available:


H. Uhlmann, D. Velickovic, K. Brandisky, R. Stantcheva, H. Brauer. Fundamentals of Modern Electromagnetics for Engineering-Textbook for Graduate Students, Part I: Static and Stationary Electrical and Magnetic Field, Technical University Ilmenau, Germany, 2005.

D. Velickovic, N. Raicevic, Z. Mancic, "Design of ellipsoidal form permanent magnets," in Proceedings of the 10th Conference on Computation of Electromagnetic Fields (COMPUMAG 95), pp. 520–521, 1995.

N. B. Raicevic, "Electrical field distribution at solenoidal coils", Proceedings of Sixth International Symposium on Electric and Magnetic Fields EMF 2003, Aachen, Germany, 2003, pp. 163–166.

D. M. Velickovic, N. B. Raicevic, "Bianisotropic coils," in Proceedings of the 2nd Conference on Microelectronics and Optoelektronics (MIEL 93), 1993, appendix.

N. B. Raicevic, S. R. Aleksic, "One method for electric field determination in the vicinity of infinitely thin electrode shells," Engineering Analysis with Boundary Elements, vol. 34, no. 2, pp. 97–104, 2010. [Online]. Available:

N. B. Raicevic, S. R. Aleksic, S. S. Ilic, "One numerical method to determine improved cable terminations," Electric Power Systems Research, vol. 81, no. 4, pp. 942–948, 2011. [Online]. Available:

N. Raicevic, "Conformal mapping and equivalent electrodes method application on electric field determination at cable accessories,". in F. Liu, G. M. Nguerekata, D. Pokrajac, X. Q. Shi, J. G. Sun, X. G. Xia (eds.) Discrete and Computational Mathematics, Nova Publishers, New York, USA, chapter 14, pp. 205–214, 2008. [Online]. Available:

N. B. Raicevic, S. R. Aleksic, S. S. Ilic, "Hybrid boundary element method for multi-layer electrostatic and magnetostatic problems," Electromagnetics, vol. 30, no.6, pp. 507–524, 2010. [Online]. Available:

J. A. Stratton, Electromagnetic Theory. Mc Graw Hill, New York, 1941.

R. F. Harrington, Field Computation by Moment Methods. New York; The Macmillan Company, 1969.


  • There are currently no refbacks.

Print ISSN: 1820-6417
Online ISSN: 1820-6425