A Power Electronic Conditioner Using Ultracapacitors to Improve Wind Turbine Power Quality

Murali Bottu, Mariesa L. Crow, Andrew C. Elmore, Stan Atcitty

Electrical & Computer Engineering, Missouri University of Science & Technology, Rolla, USA.
Geological Engineering, Missouri University of Science & Technology, Rolla, USA.
Wind Energy Technologies, Sandia National Laboratories, Albuquerque, USA..

DOI: 10.4236/sgre.2013.41010                

Abstract

The large variability in wind output power can adversely impact local loads that are sensitive to poor power quality. To mitigate large swings in power, the wind turbine output power can be conditioned by using a small energy buffer. A power conditioner is developed to smooth the wind power output by utilizing the energy of an electrochemical capacitor, or ultracapacitor. The conditioner is based on a single phase voltage source inverter connected between the grid inter-connection point and the ultracapacitor. The VSI shunt inverter injects or absorbs active power from the line to smooth the wind power output by utilizing the short term storage capabilities of the ultracapacitor. The ultracapacitor is connected to the DC link through a bidirectional DC-DC converter. The bidirectional DC-DC converter and VSI are constructed and field tested on a Skystream 3.7 wind turbine installed at the Missouri University of Science & Technology.

Keywords

Power Electronics; Electrochemical Capacitors; Ultracapacitors; Wind Power

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	P. F. Ribeiro, B. K. Johnson, M. L. Crow, A. Arsoy and Y. Liu, “Energy Storage Systems for Advanced Power Applications,” Proceedings of the IEEE, Vol. 89, No. 12, 2001, pp. 1744-1756. doi:10.1109/5.975900
[2]	M.-S. L. Lu, C.-L. Chang, W.-J. Lee and W. Li, “Combining the Wind Power Generation System With Energy Storage Equipment,” IEEE Transactions on Industry Applications, Vol. 45, No. 6, 2009, pp. 2109-2115.
[3]	C. Abbey and G. Joos, “Supercapacitor Energy Storage for Wind Energy Applications,” IEEE Transactions on Industry Applications, Vol. 43, No. 3, 2007, pp. 769-776. doi:10.1109/TIA.2007.895768
[4]	W. Li, G. Joos and J. Belanger, “Real-Time Simulation of a Wind Turbine Generator Coupled with a Battery Supercapacitor Energy Storage System,” IEEE Transactions on Industrial Electronics, Vol. 57, No. 4, 2010, pp. 1137-1145.
[5]	G. Mandic and A. Nasiri, “Modeling and Simulation of a Wind Turbine System with Ultracapacitors for ShortTerm Power Smoothing,” Proceedings of the 2010 International Symposium on Industrial Electronics, Bari, 4-7 July 2010, pp. 2431-2436. doi:10.1109/ISIE.2010.5637540
[6]	E. Naswali, C. Alexander, H.-Y. Han, D. Vaniaux, A. Bistrika, A. von Jouanne, A. Yokochi and T. Brekken, “Supercapacitor Energy Storage for Wind Energy Integration,” Proceedings of the 2011 Energy Conversion Congress and Exposition, Phoenix, 17-22 September 2011, pp. 298-305. doi:10.1109/ECCE.2011.6063783
[7]	L. Qu and W. Qiao, “Constant Power Control of DFIG Wind Turbines with Supercapacitor Energy Storage,” IEEE Transactions on Industry Applications, Vol. 47, No. 1, 2011, pp. 359-367. doi:10.1109/TIA.2010.2090932
[8]	C.-C. Hua and C.-C. Tu, “Design and Implementation of Power Converters for Wind Generator,” Proceedings of the IEEE Industrial Electronics and Applications Conference, Sapporo, 21-24 June 2010, pp. 323-328.
[9]	M. S. A. Dahidah, N. Mariun, S. Mahmod and N. Khan, “Single Phase Active Power Filter for Harmonic Mitigation in Distribution Power Lines,” National Power Engineering Conference, Bangi, 15-16 December 2003, pp. 359-362.
[10]	L. Shi and M. L. C. Crow, “Comparison of Ultracapacitor Electric Circuit Models,” Proceedings of the 2008 IEEE PES General Meeting, Pittsburgh, 20-24 July 2008, pp. 1-6.
[11]	“Maxwell Technologies.” http://www.maxwell.com/products/ultracapacitors/docs/datasheet_48v_series_1009365.pdf
[12]	R. W. Erickson and D. Maksimovic, “Fundamentals of Power Electronics,” Kluwer Academic Publishers, New York, 2000.
[13]	P. K. Krein, “Elements of Power Electronics,” Oxford University Press, New York, 1998.
[14]	H. Akagi, “New Trends in Active Filters for Power Conditioning,” IEEE Transactions on Industry Applications, Vol. 32, No. 6, 1996, pp. 1312-1322. doi:10.1109/28.556633
[15]	T. Kai and A. Tanaka, “A New Smooth Scheme for Power Fluctuation Using Inverter of Wind Power Generation with Doubly Fed Induction Generator,” Proceedings of the IEEE Electrical Machines and Systems International Conference, Calgary, 17-20 October 2008, pp. 23902395.
[16]	T. Burton, D. Sharpe, N. Jenkins and E. Bossanyi, “Wind Energy Handbook,” Wiley, Chichester, 2001. doi:10.1002/0470846062
[17]	S. Windpower, “Optimum Energy in High Wind Environments.” www.windenergy.com