WIRELE
SS
ELECTRIC
ITY
WHAT IS WIRELESS ELECTRICITY?
Wireless electricity is quite literally the
INTRO: transmission of electrical energy without
wires.
People often compare the wireless
transmission of electrical energy as being
similar to the wireless transmission of
information, for example, radio, cell phones,
or Wi-Fi internet.
HOW
IT
WORKS?
Wireless electricity work by creating a
magnetic field that your phone or other
device absorbs to gain energy.
When you place a device on a wireless
charging pad, a small coil in the device get
energy from the magnetic field and charge it.
Radio Frequency (RF) Wireless Power
Transfer
Inductive Wireless Power Transfer
Inductive Resonant Wireless Power
TYPES> Transfer
Capacitive Wireless Power Transfer
Ultrasound (Electro-Mechanical) Wireless
Power Transfer
Laser Wireless Power Transfer
• Radio charging is a wireless charging method
used to charge items with small batteries and
low power requirements.
RADIO • Radio waves are already in use to transmit and
FREQUEN
receive cellular telephone, television, radio and
Wi-Fi signals.
CY • RF charging utilizes an embedded antenna to
convert low-level radio waves into energy.
• Inductive charging is a wireless charging
method used for mid-sized items such as cell
phones,mp3 players.
• The aim of an inductively coupled wireless
power transfer (ICWPT) system is to provide
INDUCTIV power to a movable object across a gapped
magnetic structure.
E • The portable equipment can be placed near
a charging station or inductive pad to receive
power for charging.
TYPE>
Resonant inductive coupling is a phenomenon
with inductive coupling in which the coupling
becomes stronger when the "secondary" (load-
bearing) side of the loosely coupled coil
resonates.
INDUCTIV Resonant wireless charging relies on a high-
frequency oscillating magnetic field.
E This process occurs in a resonant transformer.
RESONAN
CE
Capacitive Power Transfer (CPT) appears as an
alternative to proliferating Inductive Wireless
Power Transfer technology (IPT).
Electric power is converted to AC by the
transmission module and is transmitted to the
CAPACITI receiving side through a capacitor consisting of
transmission and reception electrodes.
VE The reception module, consisting of a rectifier
circuit and voltage converter circuit, supplies a
TYPE stable direct current to the batteries and
equipment.
• There are two main components of a wireless
electricity,
Transmitter
COMPONEN Receiver.
TS • The transmitter is installed in the charging
device.
USED • The receiver is installed in the device that
must be charged such as mobile phones or
laptops.
STATIC WIRELESS CHARGING DYNAMIC WIRELESS CHARGING
USES IN
ELECTRIC
VEHICLE
• Cellular devices
• Hand-held electronic devices
• Consumer electronics
• Computers
APPLICATIO •
•
Wearable devices
Electric vehicles
NS • Robots
Wireless
A number of Devices can be charged at a
time
Electrically safe
ADVANTAGE Waterproof
High power in output
S Low maintenance
Convenient charging
More power consumption
Low efficiency
High cost of manufacturing
DIS Heat generation is more
Harmful Magnetic radiation emitted
Complex circuitry
ADVANTAGE
S
Wireless electricity is convenient and fairly
efficient.
But enough research have to be done to
CONCLUSIO increase efficiency and distance necessary
between the transmitter and receiver.
N It is clear that resonant inductive coupling
power transmission would be extremely
beneficial to society if it is implemented in
homes and home electronics.
THANK YOU
Sonar, which employs ultrasound waves, is
extensively employed in underwater
environments
ULTRA Transforms minor mechanical vibrations into
electrical energy by receiving and converting
SOUND ultrasonic waves into electrical energy by
employing the tribo electric principle.
The ultrasonic energy transfer efficiency was
greatly enhanced by adding a ferroelectric
material to the tribo electric generator, going
from less than 1% to more than 4%.
Power can be transmitted by converting
electricity into a laser beam that is received and
concentrated onto photovoltaic cells (solar
LASER cells).
This mechanism is generally known as
BASED 'power beaming‘.
At the receiver, special photovoltaic laser
power converters which are optimized for
monochromatic light conversion are applied.
In 1886 Hertz performed a successful
experiment with pulsed wireless energy
transfer.
HISTORY> He produced an apparatus that produced and
detected microwaves in the UHF region.
Tesla also performed experiments in the field
of pulsed wireless energy transfer in 1899.
