Identyfikatory
Warianty tytułu
Torque ripple analysis in brushless DC motor with skewed magnets
Języki publikacji
Abstrakty
The paper examine the prediction of cogging torque and electromagnetic torque in a brushless dc motor with a skewed magnet structure. The skew can readily be accounted for in a 3-D finite element (FE) model. This requires creation of a three-dimensional model with a fine mesh. I.e. a more workable alternative is to use two-dimensional multi-slice FE modeling, which comprises several cross-sections along the machine's shaft, so that each slice is a 2-D magnetic field problem. Additionally the influence of a segmented magnet rotor on the electromagnetic and cogging torque is investigated. In this case three-dimensional computations are used. The multi-slice FE model with skewed magnets and a segmented magnet rotor are used to compute cogging torque by the virtual work method. The FE simulations have been carried out with a multi-slice model comprising 5 slices and with a segmented magnet rotor comprising 2-3 segments. Using optimal magnet skew angle for a multi-slice model it has been shown that cogging torque can be reduced to 95% compared to a prototype (un-skewed motor) with the same average torque.
Czasopismo
Rocznik
Tom
Strony
47--51
Opis fizyczny
Bibliogr. 16 poz., rys., tab.
Twórcy
Bibliografia
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- [2] Bangura J.F., Nabeel A. O. Demerdash: Performance and Torque-Ripple Characterization in Induction Motor Adjustable-Speed Drives Using Time-Stepping Coupled Finite-Element State-Space Techniques, IEEE Transactions on Industry Applications, Vol. 35, No. 5, September/October 1999, pp. 982-990.
- [3] Dai M., Keyhani A., Sebastian T.: Torque ripple analysis of a PM brushless DC motor using finite element method, IEEE Transactions on Energy Conversion, Vol.19, No.1, March 2004, pp.40-45.
- [4] Glinka T.: Maszyny elektryczne wzbudzane magnesami trwałymi, Wydawnictwo Politechniki Śląskiej, Gliwice 2002.
- [5] Gieras J.F., Wing M.: Permanent magnet motor technology. Design and application, Inc.; New York, 2002.
- [6] Hanselman D. C.: Brushless permanent-magnet motor design, McGraw-Hill, 1994.
- [7] Jahns T.M., Soong W.L.: Pulsating torque minimization techniques for permanent magnet AC motor drivers, IEEE Transactions on Industrial Electronics, Vol.43, No.2, April 1996, pp. 321-330.
- [8] Jang G.H., Yoon J.W., Ro K.C., Park N.Y., Jang S.M.: Performance of a brushless DC motor due to the axial geometry of the permanent magnet, IEEE Transactions on Magnetics, Vol.33, No.5, September 1997, pp.4101-4103.
- [9] Krishnan R.: Permanent Magnet Synchronous and Brushless DC Motor Drives, CRC Press, Taylor & Fracis Group, 2010, NY.
- [10] Koh C.S., Kang B.K., Ryu J.S., Seol J.S.: The effects of the distribution of residual magnetization on the cogging torque and switching signals in permanent magnet (PM) motors, IEEE Transactions on Magnetics, Vol.38, No.2, March 2002.
- [11] Łukaniszyn M., Młot A.: Analiza momentu elektromagnetycznego i składowych pulsujących w bezszczotkowym silniku prądu stałego wzbudzanym magnesami trwałymi, Przegląd Elektrotechniczny, 1’2005, Warszawa, s. 21-25.
- [12] Łukaniszyn M., Młot A.: Wpływ zmiennego wektora magnetyzacji na moment zaczepowy bezszczotkowego silnika prądu stałego, Proc. Of XLII Int. Symp. On Electrical Machines, SME 2006, Cracow, Poland, pp. 111-114.
- [13] Mohammad S., Sayeed M., Tomy S.: Issues in reducing the cogging torque of mass-produced permanent-magnet brushless dc motor, IEEE Transactions on Applications, Vol. 40, No.3, May/June 2004, pp.813-820.
- [14] Mrozek A.: Właściwości silnika synchronicznego o magnesach trwałych z dwuczęściowym stojanem ograniczającym pulsacje momentu, Problemy Eksploatacji Maszyn i Napędów Elektrycznych PEMiNE, Ustroń 2002, s. 223-228.
- [15] Seok-Myeong Jang, Han-Wook Cho, Dae-Joon You: Cogging torque minimization in permanent magnet brushless DC motors for high-speed application, KIEE International Transactions on Electrical Machinery and Energy Conversion Systems, Vol.5-B, No.2, 2005, pp.146-153.
- [16] Zhu Z.Q., Howe D.: Influence of design parameters on cogging torque in permanent magnet machines, IEEE Transactions on Energy Conversion, Vol. 15, No. 4, December 2000, pp.407-412.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPS2-0057-0021