Photovoltaic Modified β-Parameter-based MPPT Method with Fast Tracking

Xingshuo Li; Huiqing Wen; Lin Jiang; Eng Gee Lim; Yang Du; Chenhao Zhao

Photovoltaic Modified β-Parameter-based MPPT Method with Fast Tracking

Vol. 16, No. 1, pp. 9-17, Jan. 2016

10.6113/JPE.2016.16.1.9

Maximum power point tracking (MPPT)

Modified Beta method

Photovoltaic (PV) energy

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Abstract

Maximum power point tracking (MPPT) is necessary for photovoltaic (PV) power system application to extract the maximum possible power under changing irradiation and temperature conditions. The β-parameter-based method has many advantages over conventional MPPT methods; such advantages include fast tracking speed in the transient stage, small oscillations in the steady state, and moderate implementation complexity. However, a problem in the implementation of the conventional beta method is the choice of an appropriate scaling factor N, which greatly affects both the steady-state and transient performance. Therefore, this paper proposes a modified β-parameter-based method, and the determination of the N is discussed in detail. The study shows that the choice of the scaling factor N is determined by the changes of the value of β during changes in irradiation or temperature. The proposed method can respond accurately and quickly during changes in irradiation or temperature. To verify the proposed method, a photovoltaic power system with MPPT function was built in Matlab/Simulink, and an experimental prototype was constructed with a solar array emulator and dSPACE. Simulation and experimental results are illustrated to show the advantages of the improved β-parameter-based method with the optimized scaling factor.

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Cite this article

[IEEE Style]

X. Li, H. Wen, L. Jiang, E. G. Lim, Y. Du, C. Zhao, "Photovoltaic Modified β-Parameter-based MPPT Method with Fast Tracking," Journal of Power Electronics, vol. 16, no. 1, pp. 9-17, 2016. DOI: 10.6113/JPE.2016.16.1.9.

[ACM Style]

Xingshuo Li, Huiqing Wen, Lin Jiang, Eng Gee Lim, Yang Du, and Chenhao Zhao. 2016. Photovoltaic Modified β-Parameter-based MPPT Method with Fast Tracking. Journal of Power Electronics, 16, 1, (2016), 9-17. DOI: 10.6113/JPE.2016.16.1.9.