| 摘要 |
Apparatus for protecting a concentrated photovoltaic system comprising photovoltaic (PV) cells 71 from overheating, the system being one in which sunlight is concentrated primarily by reflection surface 310, the apparatus comprising a detector 352 adapted to sense the temperature of the PV cells and to send a signal indicative of said temperature to a controller 350, wherein the controller is adapted, when said signal is indicative of a first threshold temperature in the PV cells, to close a shutter 342 which, when activated, substantially obscures the PV cells from the sunlight. The shutter may have a mirrored surface. The shutter may be biased towards a closed position. The shutter may be part of the reflective surface when open. In one embodiment an auxiliary PV cell which has no sun light concentrated onto it and is not obscured by the reflector or shutters is also included. Auxiliary fluid cooling systems are also disclosed. |
