JACIII Vol.20 No.7 pp. 1112-1118
doi: 10.20965/jaciii.2016.p1112


Sliding Mode MPPT Controller for Photovoltaic Systems Under Partial Shading Conditions

Min Ding*, Yi Tang**, Weihua Cao*,†, Zhili Tan*, Qingyi Wang*, and Danyun Li*

*School of Automation, China University of Geosciences
Wuhan, Hubei 430074, China
**School of Information Science and Engineering, Central South University
Changsha, Hunan 410083, China

Corresponding author

July 5, 2016
September 27, 2016
Online released:
December 20, 2016
December 20, 2016
photovoltaic, partial shading, maximum power point tracking, boost, sliding mode variable structure control

This study focuses on maximum power point tracking (MPPT) control for photovoltaic (PV) power generation systems under partial shading conditions. A mathematic model of the partially shaded solar cell is built. Then, the output characteristics of the partial-shade array are analyzed. Based on the model of the PV battery and the concept of the average-state switch cycle, an average-state mathematical model of the PV power generation system using a boost circuit for the realization circuit is established. A sliding mode controller based on the integral sliding mode function is designed to realize MPPT in the PV power generation system. Finally, simulations in MATLAB/Simulink confirm the functionality and performance of the proposed controller.

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Last updated on Mar. 24, 2017