Objective:
To make a DC to AC solar inverter for a load of 50 watt.
Need of the project:
At Vigyan ashram, we have a greywater treatment system which treats grey water from ashram’s kitchen and food lab. The system has two water tanks which need aeration. We have already installed 2 air bubblers of 25 watts each for aeration. The air compressors of the bubbler run on AC power supply but due to unavailability of 24*7 electricity, the aeration process gets affected.
To tackle this issue we decided to use solar energy and make a solar inverter which will convert DC supply provided by the solar panel into 220 volts 50 Hz AC supply.
Load requirment:
Following are the requirments of the 2 air compressors,
Power- 25 watts each.
Voltage- 220V
Current- 0.11A
Market Visit:
I visited Pune electronics market to check availability of solar inverter. After a long search, a DC to AC converter was found, which when tested proved to be non-functioning.
After the failure of the purchased DC to AC converter, we searched for an inverter circuit on the internet. We found such a circuit and decided to give it a try. This particular circuit supposedly converts 24V DC power supply into 220V 50Hz AC.
Description of the circuit:
Components:
- IC SG3524 – 1 Nos
- Transistor TIP41 – 2Nos
- Resistors- 4 Ohm*1 Nos, 100 Ohm*2 Nos,1K Ohm*2 Nos, 4.7K Ohm*2 Nos, 100K Ohm*2 Nos, 20K Ohm*1 Nos.
- Capacitors- 0.001 microfarad*1 Nos, 0.1 microfarad*2 Nos, 100 microfarad*1 Nos.
- Step up transformer- 12-0-12, 500mA .
