Photovoltaic module i.e. photovoltaic panel, for use in photovoltaic installation to generate electricity, has comparison unit to compare measured values derived by measuring units, so as to detect shadow mark on photovoltaic cells

摘要

The module (2) has a surface exposed to solar radiation, and primary and secondary photovoltaic cell assemblies (4) provided with photovoltaic cells. A measuring unit (5) measures an operating parameter i.e. voltage, at terminals of the primary assembly. Another measuring unit measures an operating parameter at terminals of the secondary assembly. A comparison unit (6) compares the measured values derived by the measuring units, so as to detect a shadow mark on the photovoltaic cells. An independent claim is also included for a photovoltaic installation comprising a communication unit communicating with a sound and/or visual alarm restitution/visualization system.