A Design Fuzzy Logic Controller for a Permanent Magnet Wind Generator to Enhance the Dynamic Stability of Wind Farms

In this paper, a design fuzzy logic controller for a variable speed permanent magnet wind generator connected to a grid system through a LC-filter is proposed. A new current control method of grid side conversion is developed by integrating the fuzzy controller, in which both active and reactive power, delivered to a power grid system, is controlled effectively. The fuzzy logic controller is designed to adjust the gain parameters of the PI controllers under any operating conditions, so that the dynamic stability is enhanced. A new simple method, based on frequency response of the bode diagram, is proposed in the design of the fuzzy logic controller. To evaluate the controller system capabilities, simulation analyses are performed on a small wind farm model system including an induction wind generator connected to an infinite bus. The simulations have been performed using PSCAD/EMTDC. Simulation results show that the proposed control scheme is more effective for enhancing the stability of wind farms during temporary and permanent network disturbances and randomly fluctuating wind speed, compared with that of a conventional PI controller.

[1]  Anca Daniela Hansen.  Generators and Power Electronics for Wind Turbines , 2005 .

[2]  Samira Dib,et al.  Adaptive PI Control of Dynamic Voltage Restorer Using Fuzzy Logic , 2010 .

[3]  Anca Daniela Hansen,et al.  Control strategy of a variable speed wind turbine with multipole permanent magnet synchronous generator , 2007 .

[4]  Lennart Söder,et al.  Distributed generation : a definition , 2001 .

[5]  Ling Xu,et al.  Conventional and novel control designs for direct driven PMSG wind turbines , 2010 .

[6]  S. M. Muyeen,et al.  Stability Augmentation of a Grid-connected Wind Farm , 2008 .

[7]  Sandeep Kumar,et al.  Appl. Sci , 2013 .

[8]  V. Blasko,et al.  A novel control to actively damp resonance in input LC filter of a three phase voltage source converter , 1996, Proceedings of Applied Power Electronics Conference. APEC '96.

[9]  M. Liserre,et al.  Design and control of an LCL-filter based three-phase active rectifier , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[10]  R. Schiffer,et al.  INTRODUCTION , 1988, Neurology.

[11]  W.A. Hill,et al.  Effect of two-level PWM sources on plant power system harmonics , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[12]  S.M. Muyeen,et al.  A Variable Speed Wind Turbine Control Strategy to Meet Wind Farm Grid Code Requirements , 2010, IEEE Transactions on Power Systems.

[13]  Henk Polinder,et al.  Basic Operation Principles and Electrical Conversion Systems of Wind Turbines , 2005 .

[14]  Junji Tamura,et al.  Variable speed wind turbine generator system with current controlled voltage source inverter , 2011 .