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http://dx.doi.org/10.5391/IJFIS.2016.16.4.281

A Modified Perturb and Observe Sliding Mode Maximum Power Point Tracking Method for Photovoltaic System uUnder Partially Shaded Conditions  

Hahm, Jehun (Disaster Robotics R&D Center, Korea Institute of Robot Convergence)
Kim, Euntai (Department of Electrical and Electronic Engineering, Yonsei University)
Lee, Heejin (Department of Electrical, Electronic and Control Engineering, Hankyong National University)
Yoon, Changyong (Department of Electrical Engineering, Suwon Science College)
Publication Information
International Journal of Fuzzy Logic and Intelligent Systems / v.16, no.4, 2016 , pp. 281-292 More about this Journal
Abstract
The proposed scheme is based on the modified perturb and observe (P&O) algorithm combined with the sliding mode technique. A modified P&O algorithm based sliding mode controller is developed to study the effects of partial shade, temperature, and insolation on the performance of maximum power point tracking (MPPT) used in photovoltaic (PV) systems. Under partially shaded conditions and temperature, the energy conversion efficiency of a PV array is very low, leading to significant power losses. Consequently, increasing efficiency by means of MPPT is particularly important. Conventional techniques are easy to implement but produce oscillations at MPP. The proposed method is applied to a model to simulate the performance of the PV system for solar energy usage, which is compared to the conventional methods under non-uniform insolation improving the PV system utilization efficiency and allowing optimization of the system performance. The modified perturb and observe sliding mode controller successfully overcomes the issues presented by non-uniform conditions and tracks the global MPP. Compared to MPPT techniques, the proposed technique is more efficient; it produces less oscillation at MPP in the steady state, and provides more precise tracking.
Keywords
Photovoltaic generator; Partial shaded; PEMFC; Maximum power point tracking (MPPT); Perturb and observe (P&O); Incremental conductance (IncCond);
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Times Cited By KSCI : 3  (Citation Analysis)
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