Study of the Cascaded Doubly Fed Induction Machine Dynamics Under Vector Control

Carlos H. S. de Vasconcelos; Antonio C. Ferreira; Richard M. Stephan

doi:10.18618/REP.2018.1.2719

Authors

Carlos H. S. de Vasconcelos CEFET-MG, Leopoldina - MG, Brasil
Antonio C. Ferreira COPPE/UFRJ, Rio de Janeiro - RJ, Brasil
Richard M. Stephan COPPE/UFRJ, Rio de Janeiro - RJ, Brasil

DOI:

https://doi.org/10.18618/REP.2018.1.2719

Keywords:

Brushless Doubly Fed Machine, Cascaded Doubly Fed Induction Machine, Wind Power Generator

Abstract

Brushless Doubly-Fed Induction Machines (BDFIM) present many industrial advantages due to the lack of brushes. A foreseen major application is for Wind Power Generation in substitution to the well known and used Doubly-Fed Induction Generator (DFIG). The Cascaded Doubly Fed Induction Generator (CDFIG), composed by two Doubly-Fed Induction Machines (DFIM), can be used as starting point to the study of BDFIM and is the object of the present paper. The dynamic model and vector control of the CDFIG will be discussed. The reference frame is given by the stator flux of the power machine. The proposed control has a cascaded structure, with internal current loop and two different possibilities of external control loop: speed control or power control. In both cases the reference is given by a Maximum Power Point Tracking (MPPT) scheme and the reactive power reference is established in accordance with the requirements of reactive power compensation. Experimental results are presented to validate the proposed methodology.

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Author Biographies

Carlos H. S. de Vasconcelos, CEFET-MG, Leopoldina - MG, Brasil

received the B.Sc. and M.Sc. degrees from the Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil, in 2001 and 2006, respectively, and the D.Sc. degrees from Federal University of Rio de Janeiro (COPPE), in 2015, all in Electrical Engineering. His main interests are in the fields of control of electrical drives, power electronics, renewable energy and energy generation.

Antonio C. Ferreira, COPPE/UFRJ, Rio de Janeiro - RJ, Brasil

received the B.Sc. and M.Sc. degrees from the Federal University of Rio de Janeiro, Rio de Janeiro, Brazil, in 1987 and 1991, respectively, and the Ph.D. degree from the University of Cambridge, Cambridge, U.K., in 1997, all in Electrical Engineering. Since 1989, he has been with the Graduate School of Engineering, Federal University of Rio de Janeiro, where he is currently an Associate Professor, teaching at both under-graduate and post-graduate levels. His main interests are power system and electrical machines.

Richard M. Stephan, COPPE/UFRJ, Rio de Janeiro - RJ, Brasil

received the B.Sc. degree in electrical engineering from the Instituto Militar de Engenharia (IME), Rio de Janeiro, in 1976, the M.Sc. degree in electrical engineering from the Federal University of Rio de Janeiro (UFRJ) in 1980, and the Dr.-Ing. degree in electrical engineering from Ruhr Universitat Bochum, Germany, in 1985. He has an MBA degree (2005) from the Center for Scientific Enterprise, London (CSEL), on Technology Enterprise Development. During 1977, he worked as an engineer at Furnas Centrais Elétricas, Rio de Janeiro. Since 1978, he has been with the Department of Electrical Engineering, UFRJ. He spent a sabbatical leave at CEPEL, the Research Center of ELETROBRAS in 1993. His main interests are in the fields of applications of superconductivity, control of electrical drives and power electronics.

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