DFIG wind turbine grid connected for frequency and amplitude control in a smart grid

Power generated from wind is a fast growing renewable source of the world energy consumption. A double feed induction generator (DFIG) used in wind turbines, provides dynamic and static active and reactive power support. In this paper, the droop control technique is used to regulate the grid amplitude and frequency according to the criteria defined for the smart grid supervisor. Wind turbine will operate in an unloaded maximum power curve, and according to the reserved active power to correct the frequency deviation, the limit of the reactive power or voltage amplitude correction will be explained. In addition, the offset adjustment of the encoder and the stator synchronization and connection to the grid will be explained. The connection process to the grid and the regulation of a real 7.5kW DFIG is performed controlling the active and reactive powers to their reference values. For that, a platform based on a real-time interface with the DS1103 board is used.

[1]  Marian P. Kazmierkowski,et al.  DSP-Based Control of Grid-Connected Power Converters Operating Under Grid Distortions , 2011, IEEE Transactions on Industrial Informatics.

[2]  G Pannell,et al.  Analytical Study of Grid-Fault Response of Wind Turbine Doubly Fed Induction Generator , 2010, IEEE Transactions on Energy Conversion.

[3]  Nicholas Jenkins,et al.  Frequency support from doubly fed induction generator wind turbines , 2007 .

[4]  Taskin Koçak,et al.  Smart Grid Technologies: Communication Technologies and Standards , 2011, IEEE Transactions on Industrial Informatics.

[5]  Peter Palensky,et al.  Demand Side Management: Demand Response, Intelligent Energy Systems, and Smart Loads , 2011, IEEE Transactions on Industrial Informatics.

[6]  R.G. Harley,et al.  Wind Speed Estimation Based Sensorless Output Maximization Control for a Wind Turbine Driving a DFIG , 2008, IEEE Transactions on Power Electronics.

[7]  María Isabel Blanco.  The economics of wind energy , 2009 .

[8]  R.G. Harley,et al.  Grid Connection Requirements and Solutions for DFIG Wind Turbines , 2008, 2008 IEEE Energy 2030 Conference.

[9]  J. Miret,et al.  Decentralized Control for Parallel Operation of Distributed Generation Inverters Using Resistive Output Impedance , 2005, IEEE Transactions on Industrial Electronics.

[10]  K. B. Mohanty,et al.  DSP-Based Doubly Fed Induction Generator Test Bench Using a Back-to-Back PWM Converter , 2009, 2009 Asia-Pacific Power and Energy Engineering Conference.

[11]  J. Miret,et al.  A wireless controller to enhance dynamic performance of parallel inverters in distributed generation systems , 2004, IEEE Transactions on Power Electronics.

[12]  M. O'Malley,et al.  The inertial response of induction-machine-based wind turbines , 2005, IEEE Transactions on Power Systems.

[13]  M. A. Poller.  Doubly-fed induction machine models for stability assessment of wind farms , 2003, 2003 IEEE Bologna Power Tech Conference Proceedings,.

[14]  J.A.P. Lopes,et al.  Participation of Doubly Fed Induction Wind Generators in System Frequency Regulation , 2007, IEEE Transactions on Power Systems.

[15]  A. Dittrich,et al.  Doubly-fed induction machine as generator: control algorithms with decoupling of torque and power factor , 1997 .

[16]  Eduard Muljadi,et al.  Pitch-controlled variable-speed wind turbine generation , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[17]  M. Kayikci,et al.  Reactive Power Control Strategies for DFIG-Based Plants , 2007, IEEE Transactions on Energy Conversion.

[18]  Patrick Wheeler,et al.  Control strategy for a doubly-fed induction generator feeding an unbalanced grid or stand-alone load , 2009 .

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

[20]  J.H.R. Enslin,et al.  Performance optimization for doubly-fed wind power generation systems , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[21]  J.A. Cortajarena,et al.  Start up and control of a DFIG wind turbine test rig , 2011, IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society.