The proposed project, Design of an Inverter using Ceiling Fan, aims to generate and store electrical energy by utilizing the rotational motion of a ceiling fan and then convert the stored DC power into AC power for operating household loads. In this system, a ceiling fan is mechanically coupled to a DC dynamo, which converts the rotational energy into DC electrical energy. The generated DC voltage is regulated through a charging circuit and used to charge a rechargeable battery. The stored energy in the battery is supplied to an inverter circuit through a switching arrangement whenever AC power is required. The inverter converts the battery’s DC voltage into AC voltage, and a step-up transformer is used to increase the output voltage to a level suitable for operating AC appliances such as an AC bulb. The project demonstrates a simple and low-cost method of energy conversion and backup power generation using commonly available components. This system can serve as a small-scale emergency power source during power outages and helps in understanding the principles of energy harvesting, battery charging, DC-AC conversion, and inverter operation. The project is suitable for educational purposes and can be further enhanced by improving the efficiency of the dynamo and inverter stages for practical renewable energy applications.        

Objectives of the Project:  

• To generate electrical energy from the rotational motion of a ceiling fan.
• To convert the mechanical energy of the fan into DC electrical energy using a DC dynamo.
• To charge a rechargeable battery through a charging circuit.
• To design a simple inverter that converts DC power into AC power.
• To step up the inverter output voltage using a transformer.
• To operate a small AC load (such as an AC bulb) using the generated and stored energy.
• To develop a low-cost and eco-friendly backup power generation system.
• To demonstrate the basic principles of energy conversion, battery storage, and inverter operation.

             

The major building blocks of this project are:

 Ceiling Fan

 DC Motor / DC Dynamo (12 V)

 Battery (12 V, 1 Ah)

 Battery Charging Circuit (12 V charger module)

 ON/OFF Switch

 Inverter Module (12 V DC to 12 V AC)

 Step-Up Transformer (12 V to 220 V)

 AC Bulb          

Block Diagram:          

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