04-12-2012, 05:14 PM
A Novel Speed-Breaker for Electrical Energy Generation Suitable for Elimination of Remote Parts of Power Systems where is Near to Roads
A Novel Speed-Breaker for Electrical Energy Generation Suitable.pdf (Size: 541.23 KB / Downloads: 102)
INTRODUCTION
For reduction of carbon dioxide emission, renewable energies are considered as proper alternative energy [1]. Renewable energies
mainly refer to the wind, solar, biomass and marine currents which are less harmful to environment, attracting a wide attention of
researchers in design and development of renewable energy conversion systems. Although improvement of renewable energy converters is
in a fast rate, the systems to extract the wasted energy in conventional energy conversion systems are not developed as much as its
technologies.
In many systems and processes, dissipation of energy is inevitable whatever renewable or conventional energy was used. For instance,
as a car passes over a speed-breaker, most of car kinetic energy will be wasted as heat in it. On other hand, to ensure the security of the
populated areas of streets, the speed-breakers are required, whatever we used electrical cars or the cars consuming gasoil. There are
numerous similar cases which such vast energies are wasting. Like an elevator during going down, a car during going down on a sloppy
street, where regardless the used type of energy or efficiency of systems energy is systematically wasting. It is mainly due to condition that
the systems are operation in it.
In this paper, we focus on the fixed speed-breaker at the streets since a high amount of vehicles kinetic energy is wasting there. There are
thousands of crowed cities with enormous flow of vehicles offers high amount of energy can be considered as near to urban resource of
energy. Also, extraction of such energy allows eliminating of transmission system between the remote areas and urban area for lightings
purposes. There is a little literature about extraction of kinetic energy from flow of vehicle in the streets. There is so little and invalid
literatures in generation of electricity by speed breakers that but the most common approaches can be seen in [2- 3] In these proposed
systems, mostly small radial flux generators with ineffective topologies have been employed.
Therefore it is necessary to design a suitable and efficient topology for design of an energy conversion system for extraction of kinetic
energy of vehicles. This paper presents a novel speed-breaker generator (SBG) for extraction of kinetic energy of vehicle flow in the street.
The SBG composed of two translators and three stators. By passing the vehicle over the SBG, the both translators are pressed down and
generating electrical power in stators.
OPERATION PRINCIPLE
The operation principle of the SBG can be described as follow. As the vehicle wheels pass the SBG, the translators will be pushed
down. Since the magnets have provided a high density magnetic field in the air-gaps, motion of translators cause to induction of voltage in
translators’ windings. The produced power will be transferred via the flexible wires to output terminal of generators. It should be noted
that, the flexible wires can be interpreted as brush and slips ring in electrical rotating machines.
CONCLUSION
This paper proposed a new system to extract the kinetic energy of vehicle flow in the streets entitled as speed- breaker generator
SBG. The SBG is introduced and a designed procedure to achieve and optimized designed is followed. Simulations of magnetic flux lines
and magnetic flux density in no load condition the cores are carrying out. The simulation confirmed that the machine cores are under
saturation. At the end it is worth to say that, this current work is a preliminary study open a view in design of system can extracted
resource of energy which are note fully realized.Further work a focus on experiments to achieve a low cost and commercial SBG.