Performance Description of Brushless Doubly-Fed Induction Machine in Its Asynchronous and Variable Speed Synchronous Modes

DOI: 10.4236/jemaa.2011.312077   PDF   HTML   XML   4,020 Downloads   7,022 Views   Citations


Brushless Doubly-Fed Machine has attracted considerable attention in recent years due to its advantages. It has the robustness of the squirrel cage induction machine, and the speed and power factor controllability of the synchronous machine as well as the absence of brushes and slip rings, and using a fractionally rated frequency converter. Hence, there are considerable benefits over the conventional machines, when the machine is applied to applications such as a wind turbine generator or high power adjustable speed drive. However, these benefits are obtained in slightly more complex structure, higher cost and larger dimensions in comparison to the conventional induction machine. This paper presents fundamental aspects of the three modes of operation of brushless doubly fed machine, i.e. simple induction mode, cascade induction mode, and synchronous mode. The investigation is performed by analyzing the spatial harmonic contents of the rotor magnetic flux density. The direct cross couplings between stator and rotor fields as well as, indirect cross coupling between stator fields by the special rotor of this machine is described. Furthermore, loss analysis of the machine in various modes is presented and the torque-speed curves for asynchronous modes are obtained. A 2-D magnetodynamic finite element model based on the D-180 4/8 pole prototype machine is extracted and simulated to verify the results.

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H. Gorginpour, H. Oraee and R. McMahon, "Performance Description of Brushless Doubly-Fed Induction Machine in Its Asynchronous and Variable Speed Synchronous Modes," Journal of Electromagnetic Analysis and Applications, Vol. 3 No. 12, 2011, pp. 490-511. doi: 10.4236/jemaa.2011.312077.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] F. Lydall, “Improvement in Polyphase Induction Motors,” British Patent 16839, July 1902.
[2] L. J. Hunt, “A New Type of Induction Machines,” J. IEE, Vol. 39, 1907, pp. 648-677.
[3] F. Creedy, “Some Development in Multi-Speed Cascade Induction Motors,” J. IEE, Vol. 59, 1921, pp. 511-532.
[4] A. R. Munoz and T. A. Lipo, “Dual Stator Winding Induction Machine Drive,” IEEE Transactions on Industry Applications, Vol. 36, No. 5, 2000, pp. 1369-1379. doi:10.1109/28.871286
[5] Z. Wu and O. Ojo, “Coupled-Circuit Model Simulation and Airgap-Field Calculation of a Dual Stator Winding Induction Machine,” IEE Proceedings Electric Power Applications, Vol. 153, No. 3, 2006, pp. 387-400. doi:10.1049/ip-epa:20050466
[6] A. K. Wallace, R. Sp′ee and H. K. Lauw, “The Potential of Brushless Doublyfed Machines for Adjustable Speed Drives,” Conference Record of Pulps and Paper Industry Technical Conference: IEEE Industry Application Society, Seattle, 20-22 June 1990, pp. 45-50.
[7] C. S. Brune, R. Spee and A. K. Wallace, “Experimental Evaluation of a Variable-Speed, Doubly-Fed Wind-Power Generation System,” IEEE Transactions on Industry Applications, Vol. 30, No. 3, 1994, pp. 648-655. doi:10.1109/28.293713
[8] P. C. Roberts, “A Study of Brushless Doubly-Fed (Induction) Machines,” Ph. D. Thesis, University of Cambridge, Cambridge, 2004.
[9] P. J. Tavner, R. A. McMahon, P. C. Roberts, E. Abdi-Jalebi, X. Wang, M. Jagiela and T. Chick, “Rotor & Design Performance for a BDFM,” Proceedings 17th International Conference on Electrical Machines (ICEM), Paper No. 439, Chania, 2-5 September 2006.
[10] A. R. W. Broadway and L. Burbridge, “Self-Cascade Machine: A Low Speed Motor or High Frequency Brushless Alternator,” Proceedings of the Institution of Electrical Engineers, Vol. 117, No. 7, 1974, pp. 1529-1535. doi:10.1049/piee.1974.0317
[11] F. Blazquez, C. Veganzones, D. Ramirez and C. Platero, “Characterization of the Rotor Magnetic Field in a Brushless Doubly-Fed Induction Machine,” IEEE Transactions on Energy Conversion, Vol. 24, No. 3, 2009, pp. 599-607. doi:10.1109/TEC.2009.2025345
[12] H. Gorginpour, B. Jandaghi and H. Oraee, “Finite Element Analysis of Brushless Doubly Fed Machine under Stator Winding Faults,” 2nd Power Electronics, Drive Systems and Technologies Conference (PEDSTC), Tehran, 16-17 February 2011, pp. 169-174.

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