Explaining the d-q Magnetic Couplings Theoretically in Saturated Smooth Air-Gap AC Machines

M. A. Khlifi

Abstract


The current paper discusses the theoretically detailed physical analysis of the effects of main flux saturation in smooth air gap AC machines. For that purpose, three sections are presented. The first one deals for presenting equivalence saturation-air gap. The second presents the equivalence of inductances between saturation induction machines and a dismounted salient pole synchronous machine. The method analyzes the leakage inductances that properly represent the corresponding leakage fluxes. The third section treats the physical interpretation of the cross-saturation. It is possible to show that the equations and physical picture in a saturated smooth-air-gap machine are similar to the equations and physical picture in a non-saturated salient-pole machine, where mutual coupling exists between the direct and quadrature axes and the self-inductances are also different on the non-salient part of the machine due to the variation of the reluctance with the rotor angle.


Full Text:

PDF

References


M. A. Khlifi, H. Rehaoulia, “General modeling of saturated AC machines for industrial drives”, COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol. 35, No. 1, pp. 44-63, 2016

M. B. Slimene, M. A. Khlifi, M. B. Fredj, H. Rehaoulia, “Analysis of saturated self-excited dual stator induction generator for wind energy generation”, Journal of Circuits, Systems and Computers, Vol. 24, No. 9, p. 1550129, 2015

M. B. Slimene, M. A. Khlifi, M. B. Ben, H. Rehaoulia, “Modeling of dual stator induction generator with and without magnetic saturation”, Journal of Magnetics, Vol. 22, No. 5, pp. 145-153, 2015

M. A. Khlifi, M. B. Slimene, M. B. Fredj, H. Rehaoulia, “Performance evaluation of self-excited DSIG as a stand-alone distributed energy resources”, Electrical Engineering, Vol. 98, No. 2, pp. 159-167, 2016

M. B. Slimene, M. A. Khlifi, M. B. Fredj, “Sensorless Speed Control for Dual Stator Induction Motor Drive Using IFOC Strategy with Magnetic Saturation”, Applied Computational Electromagnetics Society Journal, Vol. 32, No. 3, pp. 262-267, 2017

I. lglesias, L. Garcia-Tabares, J. Tamarit, “A D-Q model for the self-commutated synchronous machine considering the effects of magnetic saturation”, IEEE Transactions on Energy Conversion, Vol. 7, No. 4, pp. 768-776, 1992

P. K. Kovaks, Transient Phenomena in Electrical Machines, Butterworth-Heinemann, 1984

P. Vas, K. E. Hallenius, J. E. Brown, “Cross- saturation in smooth-air-gap electrical machines”, IEEE Transactions on Energy Conversion, Vol. EC-1, No. 1, pp. 110-112, 1986

M. H. Shin, D. S. Hyun, S. B. Cho, S. Y. Choe, “An improved stator flux estimation for speed sensorless stator flux orientation control of induction motors”, IEEE Transactions on Power Electronics, Vol. 15, No. 2, pp. 312-318, 2000

L. Harnefors, “Design and analysis of general rotor-flux-oriented vector control systems”, IEEE Transactions on Industrial electronics, Vol. 48, No. 2, pp. 383-390, 2001

E. Levi, “A unified approach to main flux saturation modeling in D-Q axis models of induction machines”, IEEE Transactions on Energy Conversion, Vol. 10, No. 3, pp. 455-461, 1995

E. Levi, “Modeling of magnetic saturation in smooth air-gap synchronous machines”, IEEE Transactions on Energy Conversion, Vol. 12, No. 2, pp. 151-156, 1997




eISSN: 1792-8036     pISSN: 2241-4487