The increasing demand for renewable energy sources has led to the development of efficient solar energy conversion systems. This project focuses on designing and implementing a solar buck converter system using a PIC microcontroller to regulate and optimize power output. The system harnesses solar energy through a photovoltaic (PV) panel and steps down the voltage using a Buck converter to charge a 4V, 1A battery efficiently. Solar output is connected to the regulated power supply ensures stable voltage levels, which are monitored using a voltage sensor. Microcontroller will measure the output voltage of solar panel will be display on LCD. Microcontroller based on the solar voltage microcontroller will generate PWM signals to the MOSFET to Buck the voltage to produce the sufficient voltage and current to charge the 4v 1 amp Battery. The proposed system is ideal for low-power applications and contributes to sustainable energy solutions by efficiently utilizing solar power. It can be further integrated with IoT for remote monitoring and control.    

Objectives:

1. To design and develop a solar-powered buck converter system.
2. To harness energy from a solar photovoltaic (PV) panel.
3. To monitor the solar panel output voltage using a voltage sensor.
4. To display the solar voltage on an LCD screen.
5. To use a PIC microcontroller for system control and monitoring.
6. To generate PWM signals for controlling the buck converter.
7. To step down the solar panel voltage to a suitable charging level.
8. To efficiently charge a 4V, 1A rechargeable battery.
9. To improve the efficiency of solar energy utilization.
10. To provide a reliable and cost-effective solar battery charging solution.

      The major building blocks of this project are:  

1. Regulated power supply.
2. PIC Micro controller.
3. Solar.
4. Reset Button.
5. LED indicator.
6. LCD module.
7. Crystal oscillator.
8. Buck converter.
9. Voltage sensor.
10. 4V,1ah Battery.

    Software’s used:  

1. PIC-C compiler for Embedded C programming.
2. PIC kit 2 programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

      Regulated power Supply:

             

Block Diagram:      

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