Solar energy is converted to electrical energy by photo-voltaic(PV) cells. This energy is stored in batteries during day time for the utilization purpose whenever required. This project is designed to use solar energy for household loads using an inverer.A solar inverter, or PV inverter, converts the direct current (DC) output of a photovoltaic solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-line electrical network.
In this project, the solar energy is stored in the battery from Photo-Voltaic cells. This stored energy of the battery is converted to AC supply of 50Hz frequency using PWM inverter IC with MOSFET gate driver IC to the driver MOSFET bridge and step-up the voltage by a transformer ,all in off line network only but not grid tie type.
In this rechargeable battery of 12V 1.3Ah is used. The solar panel 12V 5W is used. It’s ouput voltage is given to charge controller circuit to limit battery voltage to protect it from overcharging or undercharging.
Arduino (Atmega328) measures the dc voltage of battery. The controller displays dc voltage upto 50 V on the 16×2 LCD. In order to measure the voltage input, firstly using voltage divider arrangement it is designed such that it gives maximum 5V and then it is fed to ADC channel of microcontroller.
SOFTWARE USED
• ARDUINO IDE
• EMBDDED CPP CODE
• PROTEUS SIMULATOR
HARDWARE :
• 12V 1.3Ah Rechargeable Battery
• 12V 5W Solar Panel
• Charge Controller circuit
• SG3525 PWM Inverter IC
• MOSFETS (IRFZ44)
• Transformer (12-0-12V)
• Arduino UNO (Atmega328)
16×2 LCD Display