Solar Powered Home Lighting System

Abstract

Solar power systems use solar panels to convert sun’s energy directly to electricity. This electricity is stored in the batteries that can supply only DC output. All available lighting systems including LED lights, works on AC power. So the DC supplies needs to be converted to AC using inverters which causes some loss of power. The amount of power loss during this process depends on the efficiency of the inverter. But if we look closely in most of the LED lighting system, the AC is converted back to DC using switched mode power supply (SMPS) having an efficiency of around 80 percent. This system proposes to use the power from battery directly for LED lighting. Eliminating the need for DC to AC conversion by the inverter and AC to DC conversion by the LED lights SMPS supply. Many companies are coming up with drivers for brushless DC motor based fans that run directly on battery supply. So this system can be used for such fans as well. In this way one can save the cost of an inverter and make lightings and fan system more efficient and eco friendly.

Existing System

Proposed System

Architecture

BLOCK DIAGRAM