An intelligent maximum power extraction algorithm for inverter-based variable speed wind turbine systems

This paper focuses on the development of maximum wind power extraction algorithms for inverter-based variable speed wind power generation systems. A review of existing maximum wind power extraction algorithms is presented in this paper, based on which an intelligent maximum power extraction algorithm is developed by the authors to improve the system performance and to facilitate the control implementation. As an integral part of the max-power extraction algorithm, advanced hill-climb searching method has been developed to take into account the wind turbine inertia. The intelligent memory method with an on-line training process is described in this paper. The developed maximum wind power extraction algorithm has the capability of providing initial power demand based on error driven control, searching for the maximum wind turbine power at variable wind speeds, constructing an intelligent memory, and applying the intelligent memory data to control the inverter for maximum wind power extraction, without the need for either knowledge of wind turbine characteristics or the measurements of mechanical quantities such as wind speed and turbine rotor speed. System simulation results and test results have confirmed the functionality and performance of this method.

[1]  R. Chedid,et al.  Intelligent control of a class of wind energy conversion systems , 1999 .

[2]  T. Tanaka,et al.  Output control by hill-climbing method for a small scale wind power generating system , 1997 .

[3]  G. L. Johnson,et al.  Wind energy systems , 1985 .

[4]  L. L. Freris,et al.  Control policies for wind-energy conversion systems , 1981 .

[5]  Torbjörn Thiringer,et al.  Control by variable rotor speed of a fixed-pitch wind turbine operating in a wide speed range , 1993 .

[6]  Bimal K. Bose,et al.  Design and performance evaluation of a fuzzy logic based variable speed wind generation system , 1996 .

[7]  Liuchen Chang,et al.  Development of a wind turbine simulator for wind energy conversion systems , 2000, 2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492).

[8]  Quincy Qing Wang,et al.  Maximum wind energy extraction strategies using power electronic converters , 2003 .

[9]  Muammer Ermis,et al.  Autonomous wind energy conversion system with a simple controller for maximum-power transfer , 1992 .

[10]  Bimal K. Bose,et al.  Fuzzy logic based intelligent control of a variable speed cage machine wind generation system , 1995 .

[11]  J. D. van Wyk,et al.  A study of a wind power converter with micro-computer based maximal power control utilising an over-synchronous electronic scherbius cascade , 1992 .

[12]  Adel M. Sharaf,et al.  A rule-based fuzzy logic controller for a PWM inverter in a stand alone wind energy conversion scheme , 1993 .