A New Control Algorithm for Maximum Power Point Tracking of Photovoltaic Generation System

Abstract:

In order to maximize the power of photovoltaic generation system, it is necessary to track the maximum power point (MPP). A new control algorithm of photovoltaic (PV) was proprosed, which applied constant voltage tracking method (CVT) to adjust the working point around the MPP and ensure fast tracking when external conditions or loads changed suddenly. The algorithm used the optimal gradient method (OG) to make optimization of the steady-state characteristic and could effectively reduce the output power of photovoltaic array oscillation around maximum power point tracking (MPPT). The experiment and simulation results show that the proposed algorithm could track the MPP rapidly and accurately. And also could improve the energy conversion efficiency of PV generation system by reducing the output power oscillation around MPP.

• Periodical: Advanced Materials Research (Volume 305)
• Pages: 230-234
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.305.230
• Online since: July 2011
• Authors: Xin Sheng He, Chun Fu Gao, Bin Wang, Zhi Yong Luo
• Keywords: Constant Voltage Tracking, Maximum Power Point Tracking (MPPT), Optimal Gradient Method, Pv System

References

[1] Pandey A, Dasgupta N and Mukerjee A K: IEEE Transaction on Power Electronics (2007). Vol. 22, pp.698-700.

[2] Q.M. Cheng and Y.M. Cheng: Journal of Shanghai University of Electric Power, Vol. 25 (2009) No. 4. (In Chinese).

[3] P.W. Xu, F. Liu and B.Y. Liu: Power Electronics, Vol. 41(2007) No. 5. (In Chinese).

[4] J.H. Su, S.J. Yu and W. Zhao: Acta Energiae Solaris Sinica (2001). pp.409-412. (In Chinese).

[5] Samimi J, Soleimani E A and ZabihiM S: Solar Energy, Vol. 60 (1997) No. 2, pp.97-107.

[6] Y.S. Xiong, Y. Li and J.M. Xu: Electric Power Automation Equipment, Vol. 29 (2009) No. 6. (In Chinese).