Performance evaluation of series and parallel connected grid side converters of DFIG

With the increased penetration of wind power in the system having new electricity grid code, it is required for the wind power generator to fulfill the same requirements as conventional power plants. In this paper, series and parallel connected grid side converters with conventional doubly fed induction generator (DFIG) scheme is explored to suit the Grid Code Requirements (GCRs) during static and dynamic conditions. A dynamic model and control structure for the series architecture are developed and the performance of the system is analyzed with three-phase fault, voltage sag and step response to reactive power injection. The reactive power capability curves of conventional and modified DFIG schemes through the use of performance capability curves has been developed.

[1]  A. Petersson.  Analysis, Modeling and Control of Doubly-Fed Induction Generators for Wind Turbines , 2005 .

[2]  I. Erlich,et al.  Advanced grid requirements for the integration of wind turbines into the German transmission system , 2006, 2006 IEEE Power Engineering Society General Meeting.

[3]  Jon Clare,et al.  Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation , 1996 .

[4]  G. Venkataramanan,et al.  A Fault Tolerant Doubly Fed Induction Generator Wind Turbine Using a Parallel Grid Side Rectifier and Series Grid Side Converter , 2008, IEEE Transactions on Power Electronics.

[5]  Frede Blaabjerg,et al.  Review of Contemporary Wind Turbine Concepts and Their Market Penetration , 2004 .

[6]  J. Morren,et al.  Ridethrough of wind turbines with doubly-fed induction generator during a voltage dip , 2005, IEEE Transactions on Energy Conversion.

[7]  Istvan Erlich,et al.  Wind power in electricity markets: key issues and challenges , 2008 .

[8]  Lie Xu,et al.  Direct active and reactive power control of DFIG for wind energy generation , 2006, IEEE Transactions on Energy Conversion.

[9]  R. Datta,et al.  Direct power control of grid-connected wound rotor induction machine without rotor position sensors , 2001 .

[10]  I. Erlich,et al.  Enhanced Reduced Order Model of Wind Turbines with DFIG for Power System Stability Studies , 2006, 2006 IEEE International Power and Energy Conference.

[11]  David J. Atkinson,et al.  Stator-flux-oriented control of a doubly-fed induction machine with and without position encoder , 2000 .

[12]  G. Venkataramanan,et al.  A Unified Architecture for Doubly Fed Induction Generator Wind Turbines using a Parallel Grid Side Rectifier and Series Grid Side Converter , 2007, 2007 Power Conversion Conference - Nagoya.

[13]  Vladislav Akhmatov,et al.  Variable-Speed Wind Turbines with Doubly-Fed Induction Generators , 2002 .