Here’s the block diagram of our Microcontroller Based Integration of Renewable Energy system. We can clearly describe the working process through this block diagram. Firstly we have two energy sources to supply electricity. One is the Solar and the other is the Wind. Generally Solar is the first priority of supplying the electricity. Our control system continuously monitors the voltage and the current of both sources. If any unwanted situation occurs such as under voltage of a sources, or power failure of any of those sources, our system immediately switches the supply line to another source that has no problem and vice versa. If both of the sources lose their voltage to the minimum threshold voltage, it combines the two sources. A voltage stabilizer keeps the output load voltage always stable as the loads need. All processes, voltages, current and the current source is shown in an LCD display.
In this flowchart we can easily determine the working process of our system. Starting with some control initializations our control system reads/measures the voltage and current of both energy sources. The voltage and current is shown & updated every second in a LCD display. The control system continuously checks if the supply voltage is less than the threshold voltage set by us on the program. If the supply voltage gets down below the threshold voltage, it switches the supply line to the other source. Or if both sources drops the threshold voltage, then the controller combines those two sources. For example if somehow solar source drops the threshold voltage, the controller switches the supply line to the wind source. If wind source drops the threshold voltage, the controller switches the supply line to the solar source. If both solar and wind source drops the threshold voltage, the controller combines (in series) the sources.
- Microcontroller (Arduino) – 1 pcs
- Voltage Regualtor (LM317) – 2 pcs
- Boost convereter – 1 pcs
- Relay (5v) – 5 pcs
- LCD -1 pcs
- Transistor (NPN) – 5 pcs
- Resistor – 13 pcs
- DC Fan – 1 pcs
- LED light – 1 pcs
- Power sources (12v) – 2 pcs
- Regulated PSU for bias(9v) – 1 pcs
- Screw Connectors – 3 pcs
- Wires – As needed