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Hot spotting is a problem in photovoltaic (PV) systems that reduces panel power performance and accelerates cell degradation. In present day systems, bypass diodes are used to mitigate hot spotting, but it does not prevent hot spotting or the damage it causes. This paper presents an active hot-spot detection method to detect hot spotting within a series of PV cells, using ac parameter characterization...
This paper presents a dc arc protection scheme for a dc distribution system. The location of arc fault detectors (AFD) and interrupting devices (ID) for system safety guarantee is discussed. Through the proposed scheme, the dc distribution system is protected from arc faults occurring in photovoltaic (PV) sources and load sides. Operation principle is discussed in detail. Experimental results verify...
This paper proposes a new islanding detection algorithm for photovoltaic (PV) converters interfaced with a DC distribution system. Islanding detection is a key requirement for electrical safety and equipment protection. Because DC distribution systems lack frequency and phase, which have been utilized in islanding detection algorithms in AC systems, new methods are required for system reliability...
This paper proposes a cost effective photovoltaic (PV) generation system in DC microgrid which is helpful to achieve not only high efficiency but also cost reduction by employing simple control algorithm. While the AC interactive PV interface requires high performance processors for sinusoidal current injection to the grid, only a simple maximum power point tracker can directly control the PV module...
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