[Assam] Assamese Inventor - Power From Speedbreakers -HT

Ram Sarangapani assamrs at gmail.com
Wed May 2 22:10:43 PDT 2007

While watching MSNBC, today - Countdown with Keith Olbermann (Oddball
section), was pleasantly jolted by hearing one Kanak Gogoi's name and his
invention of generating electricity thru speedbumps.

Here is MSNBC's Oddball link. Keith makes the point of India being one of
the worst polluters, and now Gogoi has come up with this contraption - that
needs an SUV (4-Wheel Drive) to produce that power.


It sounds technically feasible. Anyone know more about this and of Gogoi?

Below, same story from the HT

  *Rahul Karmakar <http://www.hindustantimes.com/Search/Search.aspx?q=Rahul
 Guwahati, April 25, 2007
 First Published: 21:01 IST(25/4/2007)
Last Updated: 21:08 IST(25/4/2007)
 Now, power from speedbreakersNext time you drive on the highway, don't
regard a rumble strip or speedbreaker as a nuisance. For, it could be
running your AC or water heater back home.

If that sounds incredible, just ask Kanak Gogoi, a small-time supplier
turned property dealer who was inspired by his daughter Riya's birth eight
years ago to innovate. And after designing a power hang-glider, an aeroboat
and a three-wheel mini car, he unveiled his latest innovation on Riya's
birthday-the rumble strip power generator.

"Like most people, I have often found the speedbreaker to be an impediment
to free flow of traffic," said Gogoi. "But when driving over the rumble
strips in my locality became inevitable, the idea of converting the
potential energy of vehicles into kinetic energy stuck."

Gogoi, in his forties, began working on the idea last year. But instead of
the conventional bitumen-and-stone-chip rumble strip, he welded a five-metre
long speedbreaker with three identical movable metal plates in the middle.
He then approached IIT Guwahati for specific calculations and scientific

"The plates, inclined by a spring-loaded hydraulic system, are pushed down
when a vehicle moves over them, bouncing back to the original position after
the vehicle moves away. As the plates come down, they crank a lever that is
fitted to a ratchet wheel type mechanism. This in turn rotates a geared
shaft. The output of this shaft is coupled to a dynamo to convert the
vehicle's potential energy to kinetic energy," explained Gogoi.

According to the IIT's Department of Design, a vehicle weighing 1000 kg
moving up an inclined plane of 10 cm produces approximately 0.8 kw power.
Though power generated from rumble strips is instantaneous, continuous flow
of traffic and storage of electricity generated from their movement over the
plates will ensure steady flow, said departmental head AK Das, adding there
is technology to store power thus generated.

The IIT has calculated the cost of generation of power from a series of
electro-mechanized rumble strips would be below Rs one crore per MW.
Comparatively, thermal energy and hydropower cost Rs 5-8 crore per MW.

Gogoi's rumble strip generator has a drawback though. It is unidirectional,
applicable only for one-way traffic. "I am working on a two-way system," he
said, adding that he has also designed a roadside model village that can
draw electricity from rumble strips on highways.
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