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Distributed maximum power point tracking (DMPPT) can effectively increase the power generation ability of photovoltaic (PV) systems in mismatch conditions. To further recover mismatch power loss inside PV panels, submodule realization is developed as an improved penetration of DMPPT concept. This paper proposes an optimized submodule level DMPPT system with a flexible time-sharing maximum current...
Distributed Maximum Power Point Tracking (DMPPT) concept provides effective anti-mismatch feature, however, it fails in extreme mismatch situation. To get full profit from PV system, quantitatively static analyzes of major DMPPT structures are presented. The existence criteria and quantitative evaluation method for optimal power region of different DMPPT structures are first proposed. Simulation and...
A mathematical method is proposed for optimal scheduling lead-acid batteries for cycling use in this work. Typical battery characteristic curves and experiential data, including the discharge rate vs. discharge time, discharge depth vs. cycling times, are first converted into mathematical expressions with consideration of the circumstance temperature. And then through the proposed optimization algorithm...
This paper addresses the power loss issue results from mismatch case which is critical to improving overall efficiency of the residential PV system. In general, a dedicated DC-DC converter with an extra distributed MPPT (Max Power Point Tracking) algorithm, what is called a MIMC (Module Integrated MPPT Converter), is connected to each panel to reduce the mismatch impact. However, even by adopting...
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