Power generation from speed breakers

B.tech final year projects give opportunity to students to do some breakthrough work.Increasing demand of energy adds need of identifying non conventional resources of energy. In this article I will explain about Power generation from speed breaker and all the possible mechanism required for it.

For completion of B.tech final year curriculum every student has to complete an engineering project. I along with my group members have gone through various topics and finally we selected power generation from speed breakers
This project is in starting phases and in many places of world research is going on this topic. We have decided to complete it by simple methodology yet effective.

Principle Fundamental

This project is simply based on utilising potential energy of a vehicle passing over a road breaker by converting it to electrical energy. This electrical energy can be store in batteries or can be directly use to light up street light or traffic signals.

By using such system which can convert potential energy of a vehicle in to electrical energy we can generate a large amount of energy. This large amount of electricity will reduce the burden of demands from conventional resources.

System Required

To facilitate the power generation from speed breaker we need an assembly of different system. We can classify this system as-
Damper system
Motion conversion system
Electricity converter

To make this conversion possible the whole plan of action is like as the vehicle passes over the breaker of the system damper system a system will provide support to speed breaker and due to weight of the vehicle breaker will go down and motion conversion system will convert downward linear motion into rotary motion. This rotator motion will be feed to energy conversion system. It will convert mechanical energy to electrical energy.

Damper System

Damper system is required to support the speed breakers. Once the speed breakers are pushed down then a damper system will be required to push the speed breakers up again to its original state. They are also required to absorb the shocks produced during the passage of vehicles over the speed breakers.

Motion conversion system

Motion conversion system converts linear vertical motion into rotary motion. To complete this conversion of motion, a rack and pinion mechanism is applied. Rack and pinion mechanism consists of two parts. First is rack, it is the flat, toothed part, performing linear motion. Second is pinion, it is a gear in wheel form, producing rotary motion. So this conversion system is called motion conversion system.

Energy Conversion System

Energy conversion system is required to convert mechanical energy into electrical energy. Rotary motion is obtain as the output of pinion (or of gear box), which is coupled with a dynamo. Dynamo generates electricity with the help of input rotary motion. The electrical energy is obtained as the output of the dynamo. In addition to this, a stepper motor is coupled to the rotary motion obtain from the other set of rack and pinion. Stepper motor is applied to enhance the generated power. In a dynamo electricity is generated by cutting of magnetic lines by a conductor.

Energy Estimation

When the vehicle moves over the speed breaker it reduces its speed. As these breakers have a little height it gains an increase in its potential energy. A vehicle weighing 1,000 kg passes over the system it pushes the damper to a depth of 10 cm it can produce approximately 0.98 kilowatt power (ideally). So from one such speed-breaker on a busy highway, where about 100 vehicles pass every minute, about one kilo watt of electricity can be produced every single minute. This project needs a lot research work as it can be proved a non conventional resource of energy.

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