SENSOR DEVICE FOR MONITORING THE OPERATION OF A PV SYSTEM, AND PV SYSTEM WITH SUCH A SENSOR DEVICE

摘要

A sensor device (5) for monitoring the operation of a PV system is described. Such a PV system has at least, one PV module (1) with a plurality of PV cells (3) laminated on a sup­port plate (2). The sensor device (5) comprises a substrate (6) with an electronic circuitry (9) adapted to be mounted on the support plate adjacent to PV cells of the PV module. The cir­cuitry comprises two or more input terminals (7,8) for receiving an output voltage of a series connection of one or more PV cells of a PV module, and a comparator (T1,T2) for comparing the out­put voltage received on the input terminals with a first refer­ence voltage corresponding with a first operation level of the PV module. The comparator controls a first signalling element (12) for signalling the operation of the PV module above said first operation level.