Automatic temperature monitoring and constant current driving high power led supplied by PV/wind/grid hybrid system

A kind of constant temperature and current operating high power LED module supplied by photovoltaic (PV)/wind/grid hybrid power system was designed in this paper. The LED was monitored while was controlled at room or lower temperature by a closed loop feedback circuit. An optimal PV/wind/grid complementary generation with lead-acid rechargeable battery was employed to supply the LED module. The maximum power point tracking (MPPT) scheme was adopted in the charging/discharging/unloading controller for the accumulator. Necessary computer software was programmed to perform technical tasks. The experimental result indicates that it´s benefit to improving luminescence when the LED is controlled by the designed circuit at low temperature.