Bicycle Power Generator

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 This Blog is made by the following students of VIT, PUNE

Abhay Joshi (01)

Gauri Asole (04) 

Bhargav Mahajan (07)

Samruddha Bharti (08) 


The present life of the people is running with unavoidable frequent power cuts of about three hours per day and which is hardly controlled by wealthiest using electrical power generators and not by middle-order people. In order to overcome this problem by the middle class and below average people, in this project, bicycle pedalling concept is employed to develop an electrical power which can be used for cooking food especially at the time of power cut. The bicycle pedalling converts mechanical energy into electrical energy through manually. In our project, the bicycle generators are placed in Gym, and its function and feasibility analyzed.

The entire design of bicycle power generation and its feasibility includes; Battery, Generator, Bicycle, Sprocket, inverter board, Stand for Generator, Belt (a type of belt) and Chain. The back wheel of the bicycle coupled with the generator through the belt. The belt is placed over the rim of the wheel. on the other side, the belt placed over the generator through the battery and inverter board are connected in series. The two terminals from the generator connected with the battery. The battery is used to store the electricity. as the current produced in the D.C form, it can be directly stored in the battery. The inverter board is coupled with the battery to convert the D.C current to A.C current. Finally, the inverter board is connected with the power terminal for power supply.


Important Parts -

A. Bicycle A bicycle is a human-powered, pedal-driven, a single-track vehicle having two wheels attached a frame, one behind the other. A sprocket or sprocket-wheel is a profiled wheel with teeth, cogs, or even sprockets that mesh with a chain, track or other perforated or indented material.


 B. Generator and inverter board The generator is used to convert the mechanical energy into electrical energy. Its specifications are Voltage; 3-12 V, Type; D.C and variable speed generator. The generator is connected with the battery and the inverter board. The specifications of the battery used for this work is; Nominal voltage; 12.0 V, Nominal capacity 20000 mA, 240 W/hr., Maximum discharging current; 300 A, and Weight; 6350g. The inverter board has the following specifications; Power; 120 W, Load capacity; 500 V A. 

Working

As per the design, the bicycle generator is constructed. In this manual load is applied on the bicycle pedal due to the manual force the largest sprocket starts to rotate. The largest sprocket is connected with the small sprocket in the back end by the simplex chain. Thereby the small sprocket also starts to rotate. The small sprocket is placed in the centre shaft of the back wheel. So that the rotating motion of the centre shaft transmitted to the back wheel there by the back wheel also rotates. The back wheel is coupled with the D.C generator through a flat belt. Now the motion is transmitted to the generator. the generator converts this mechanical motion into electrical energy. The current produced is in the form of D.C so it can be directly stored in the battery. The inverter board is used to convert the D.C current into A.C current and then it sent to the supply port.


FUTURE SCOPE 

The analysis of bicycle power generation and its feasibility was done successfully. Even though there is something needs to improve in our project, so we encourage and motivate the students and juniors of our college to build up the bicycle generator with more efficiency, like adding flywheel to increase the rate of power production and provide some mechanism for continuous pedalling. And further developments like attaching generator core with the cycle wheel and make the cycle wheel to act as a generator when it is rotated and set the flywheel in various position in order to find the most effective power production. Instead of a belt the wheel and the generator can be coupled with chain drive. Otherwise, the generator can be attached to the centre shaft of the back wheel.  

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