A dynamically rapid method used for tracking the maximum power point of photovoltaic arrays, known as ripple correlation control, is presented and verified against experiment. The technique takes advantage of the signal ripple, which is automatically present in power converters. The ripple is interpreted as a perturbation from which a gradient ascent optimization can be realized. The technique converges asymptotically at maximum speed to the maximum power point without the benefit of any array parameters or measurements. The technique has simple circuit implementations.
T. Esram et al., "Dynamic Maximum Power Point Tracking of Photovoltaic Arrays using Ripple Correlation Control," IEEE Transactions on Power Electronics, Institute of Electrical and Electronics Engineers (IEEE), Sep 2006.
The definitive version is available at http://dx.doi.org/10.1109/TPEL.2006.880242
Electrical and Computer Engineering
National Science Foundation (U.S.)
Keywords and Phrases
Maximum Power Point Tracking (MPPT); Photovoltaic (PV); Ripple Correlation Control (RCC)
Article - Journal
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