Electricity

1. ELECTRICITY GENERATION
FROM SPEED BREAKER

2. Introduction:
 Is anyone happy with current situation of
electricity in India???
 So, this is our small step to try to
improve this situation by our project.
 First of all what does electricity mean to
us???
 Electricity- secondary source of energy
i.e. converted from other sources.
 We need it for every small thing, still
notice it’s importance only during load
shedding.

3.  OBJECTIVES:
 “Shaping Imagination”
 “Electricity”-Need of the hour

4. Scope, Merits and Uses
 Low Budget electricity production
 Less floor area
 No obstruction to traffic
 Easy maintenance
 Suitable at parking of multiplexes,
malls, toll booths, signals, etc.
 Uses: Charging batteries and using
them to light up the streets, etc.

5. BASIC PRINCIPLE:
 Simple energy conversion from
Mechanical to Electrical.
 To generate electricity using the
vehicle weight (potential energy) as
input
 Possible using 3 different
mechanisms:
I. Crank-shaft mechanism
II. Roller mechanism
III. Rack- Pinion mechanism

6. Why Rack- Pinion
mechanism??
 Crank-shafts are required to be mounted on
bearings which creates balancing problem
leading to mechanical vibrations which in
turn damage the bearings.
 Secondly as bearings are of sliding type,
any occurrence of variable load( which is bit
obvious in case of vehicles!!) leads to
balancing problem.

7.  Roller mechanism has some different
disadvantages.
 Maintenance will be very difficult
 Might cause collision.

8.  What we did???
 Rack-Pinion assembly gives good
mounting convenience
 Maximum gear losses– 3 to 5%
 Efficiency– 95%

9. Construction of generator:
 Initial experiments- DC motor as
Generator
 How is electricity generated???
 Basic principle of generation of
electricity.
 What we did???

10. Challenges we faced!!
 Selecting suitable generator.
 Selection of springs.
 Achieving proper balance of speed
and torque.

11. What we achieved???
 We LEARNT a lot.
 Constructed our own generator by
applying the basic principle.
 Although we got less electrical output,
we have successfully explained our
idea of generating electricity from
speed breaker.

12. Future Scope:
 Such speed breakers can be designed
for heavy vehicles, thus increasing
input torque and ultimately output of
generator.
 More suitable and compact
mechanisms to enhance efficiency.