Wireless energy transmission

                                                             

Energy is a basic requirement for all the activities. According to physics energy is the basic quantity needed to be transferred to object in order to do work. Work cannot be performed without energy.

There are different forms of energy which are used for different purposes, but in this modern world the electrical energy is most widely used than any other form of energy.

Electrical energy has such a wide range of applications in today’s world that it’s per capita consumption is regarded as an index of a country’s development.

As electric energy is needed for many tasks, at different places there must be an efficient network to transfer the energy from one place to other.

There are many ways to transfer electrical energy, but most often copper cables with insulation or other conducting metal cables are used to transfer electrical energy.

Recently a new way has been found to transfer electricity. This way does not require cables to transfer electricity.

                  
                                                     LIKE MY PAGE ON Facebook
     https://www.facebook.com/Pranav-master-science-105538094502435/?modal=admin_todo_tour

                                                                 CLICK HERE

WIRELESS ENERGY TRANSMISSION (WET)

Also called electromagnetic power transfer involves transfer of electricity without any physical conductor.

The electricity is transmitted in the form of electro-magnetic waves produced by the transmitter and received by the receiver device. Basically the transmitter and the receiver devices are electro-magnetic devices used to transmit the energy.

Wireless energy transmission has a wide range of applications, it is used in many devices such as wireless mobile chargers, wireless CFL’s and also to power some space satellites (backup energy).

  WIRELESS MOBILE CHARGER

Another important use of wireless energy transmission is to transmit electricity underwater, as laying cables underwater can be dangerous (leakage of current) wireless energy transmission is used to transmit electricity under water (electro-magnetic waves).

PRINCIPLE

Wireless energy transmission works on the principle of electro-magnetism. Electro-magnetism is a branch of physics that deal with the relation of magnetism and electrically charged particles.

HOW IT WORKS????

The transmitter converts the voltage source into high frequency alternating current (AC), the high frequency alternating current induces a magnetic field.

Alternating current = the current which changes direction after equal interval of time.

As the current changes its direction after equal interval of time the direction of magnetic field also changes.

When the receiver comes into the vicinity of the magnetic field (which changes direction continuously) a current is induced in it.

One might wonder how the idea of wireless transmission of energy must have evolved. It was through the effort of the great scientist NIKOLA TESLA.

NIKOLA TESLA [COLORADO SPRINGS]

Nikola tesla had set up an experiment in Colorado to test wireless transmission of electricity. He built wardenclyffe tower also known as tesla tower to transmit energy.

TESLA TOWER.

Basically tesla coil has two circuits separated (each with it’s own capacitors) by a spark gap. It needs a high voltage source which is obtained through a transformer.

The primary coil acts as a sponge and soaks charge, when the capacitors build enough charge the charge break through the air resistance in the spark gap. The current that flows out of capacitor induces magnetic field.

In his experiment he built a power station with tesla tower at it’s center and several light bulbs around it spread in the area of 100 feet (around the station).

COLORADO EXPERIMENT.

This initiative by NIKOLA TESLA sparked off the research for wireless transmission of energy.

ADVANTAGES OF WET

COST OF CABLE: as the electricity is transmitted wirelessly the cost of cables is reduced and the transmission of energy is made commercially viable.

SPACE:  as cables need a lot of place to be laid wireless transmission reduces space for operation.

DISTANCE: magnetic waves can be transmitted to a large distance using resonance and induction process.

MULTIPLE DEVICES: wireless transmission can be used to charge multiple devices at a time.

DISADVANTAGES OF WET

COST OF CONSTRUCTION: The construction cost of initial setup of wireless energy transmission is very high.

HIGH FREQUENCY: it requires a high frequency supply in order to be efficient and effective.

ENERGY WASTAGE: Some amount of energy is wasted in the form of heat and weak electro-magnetic waves.

This topic is currently under research to obtain maximum energy output and transmit energy to larger distances.

Wireless transmission is highly efficient in shorter range, but as the distance between the transmitter and the receiver increases it becomes less efficient and requires focusing devices.

Resonant circuits are used to increase efficiency of wireless energy transmission systems at large distances

RESONANT CIRCUIT.

Please comment down and provide me a feedback, like my Facebook page and subscribe through your E- MAIL to get updates regarding the new posts.

Also suggest me a nice topic to write the new post. I will mention the guy in my Facebook page who suggests me the best topic.