Output power smoothing of wind turbine generation system for the 2-MW permanent magnet synchronous generators

Effective utilization of renewable energies such as wind energy is expected in place of the fossil fuel. The speed of wind is not remained constant and windmill output power is proportional to the cube of wind speed. In order to wind speed deviation, the output power of wind turbine generators (WTGs) is fluctuated. To reduce the fluctuation, different methods are already proposed such as energy storage devices, electric double layer capacitors, flywheels, and so on. These methods are effective but they require a significant extra cost to the system. This paper represents a method to generate smooth output power of a large WTG by using the inertia of WTG system. The inertia behaves like an inductor in an electrical circuit. It stores energy during acceleration and releases energy during deceleration. It can be utilized to generate smooth output power of a WTG. The additional energy storage system is not required. Additionally, the proposed method can be changed into the Maximum Power Point Tracking (MPPT) control method by adjusting an average time. The effectiveness of the proposed output power smoothing control is compared with MPPT control method and verified by using the MATLAB SEVIULINK environment.

[1]  J. Cidras,et al.  Power fluctuations in an isolated wind plant , 2004, IEEE Transactions on Energy Conversion.

[2]  P. Ledesma,et al.  Doubly fed induction generator model for transient stability analysis , 2005, IEEE Transactions on Energy Conversion.

[3]  Gengyin Li,et al.  Modeling of the Wind Turbine with a Permanent Magnet Synchronous Generator for Integration , 2007, 2007 IEEE Power Engineering Society General Meeting.

[4]  Atsushi Yona,et al.  Output Power Leveling of a Wind Generation System Using Inertia of a Wind Turbine , 2008, 2008 IEEE International Conference on Sustainable Energy Technologies.

[5]  Sadao Asato,et al.  A Method of Stabilization of a Wind Generator Power Using Backstepping Algorithm , 1997 .

[6]  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).

[7]  Roberto Cárdenas,et al.  Control strategies for power smoothing using a flywheel driven by a sensorless vector-controlled induction machine operating in a wide speed range , 2004, IEEE Transactions on Industrial Electronics.

[8]  Abderrazak Ouali,et al.  A fuzzy logic supervisor for active and reactive power control of a variable speed wind energy conversion system associated to a flywheel storage system , 2009 .

[9]  Tomonobu Senjyu,et al.  Output power leveling of wind turbine Generator for all operating regions by pitch angle control , 2006 .

[10]  Mohammad Tariq Iqbal,et al.  Modeling and control of a wind fuel cell hybrid energy system , 2003 .

[11]  T. Funabashi,et al.  Operation strategies for stability of gearless wind power generation systems , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[12]  S. Arnalte,et al.  Automatic Generation Control of a Wind Farm with Variable Speed Wind Turbines , 2002, IEEE Power Engineering Review.

[13]  Rashad M. Kamel,et al.  Wind power smoothing using fuzzy logic pitch controller and energy capacitor system for improvement Micro-Grid performance in islanding mode , 2010 .

[14]  G. Joos,et al.  Supercapacitor Energy Storage for Wind Energy Applications , 2007, IEEE Transactions on Industry Applications.

[15]  S. Teleke,et al.  STATCOM with energy storage for smoothing intermittent wind farm power , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[16]  Tomonobu Senjyu,et al.  Terminal-voltage and output-power regulation of wind-turbine generator by series and parallel compensation using SMES , 2006 .

[17]  Roberto Cárdenas,et al.  Control strategies for enhanced power smoothing in wind energy systems using a flywheel driven by a vector-controlled induction machine , 2001, IEEE Trans. Ind. Electron..

[18]  T.C. Green,et al.  Fuel consumption minimization of a microgrid , 2005, IEEE Transactions on Industry Applications.

[19]  Tomihiro Takano.  Natural Energy Power and Energy Storing Technology , 2006 .

[20]  Tomoyuki Matsuzaka,et al.  Study on Stabilization of a Wind Generator Power Fluctuation , 1997 .