Wireless power technology allows for the transmission of electrical energy without wires. It is useful when wires are inconvenient or impossible. Wireless power standards like Qi are being developed to enable charging of devices up to a meter away and over 60 watts for applications like laptops. Many companies are working to integrate wireless charging into consumer electronics and vehicles to provide a more convenient charging experience without connectors. The wireless power market is forecast to grow significantly as the technology is adopted into more devices and locations over the next decade.

1. WIRELESS POWER TECHNOLOGY WAY
TO WIRELESS WORLD
Guided By :
Mr. Soumo Ghosal
Operations Manager ,Electrical
Prepared By :
Mr. Shrivats Goswami
Jr. Engineer, Electrical

2. KEY WORDS & ABBREVIATIONS USED
WP Wireless Power
WPC World Power Consortium
WPT Wireless Power Transfer
WET Wireless Energy Transfer
RFID Radio Frequency identification
WTT Wireless Transfer Technology
Tx : Transmitter
Rx : Receiver
MIT : Massachusetts Institute of Technology
Chee : Intagible force drives energy (Chinese world )
PMA : Power Matters alliance
A4WP: Alliance for Wireless power

3. WHAT IS WIRELESS POWER TECHNOLOGY
• WPT or WET is the transmission of electrical energy from a power
source to an electrical load without the use of discrete man made
conductors
• WP is Useful when Interconnecting wires are inconvenient ,
hazardous or are not possible .

4. EVOLUTION OF WIRELESS POWER CONCEPT
1800s
•Inductive power transfer between nearby coils of wire is used and popular as an old technology, it is existing
since the transformer & Induction heating used.
1892
•Method of powering railroad trains using resonant coils inductively coupled to a track wire at 3 kHz
developed.
1973
•The first passive RFID technologies were invented by Mario Cardullo.
•It uses electromagnetic fields to automatically identify and track tags attached to objects. The tags contain
electronically stored information. Passive & Active tags .
•Active used to identify real time location of objects while passive used in access control & identification with
low range.

5. EVOLUTION OF WIRELESS POWER CONCEPT
1990s
•WTT Started to used in proximity cards and contactless smartcards.
•It is also started to use in the Wet Environment as Electric tooth brush
2000S
•The proliferation of portable wireless communication devices such as mobile
phones, tablet, and laptop computers in recent decades driving the development of
wireless powering and charging technology.
2007
•A team from MIT developed coupled tuned circuits made of a 25 cm resonant coil
at 10 MHz to transfer 60 W of power over a distance of 2 meters (6.6 ft) (8 times the
coil diameter) at around 40% efficiency.

6. EVOLUTION OF WIRELESS POWER CONCEPT
2008
•The WPC was established to develop interoperable
standards across manufacturers.
2009
•Qi inductive power standard V.1.1 published . It enables
charging and powering of portable devices of up to 5 watts
over distances of 4 cm (1.6 inches).
2013
•Qi inductive power standard updated to V.1.1.2 Published
and it opened a door for greater flexibility for manufacturers.

7. EVOLUTION OF WIRELESS POWER CONCEPT
2015
•Qi V1.2 brought changes & improvements with
increased level of power upto 15 W with expansion to
resonant charging allowing greater distances between Tx
and Rx . 45 mm vertical distance from the transmitter.
FUTURE

8. EVOLUTION OF WIRELESS POWER CONCEPT
FUTURE
•.The WPC is developing an extension of the Qi specification that will deliver at
least 60 Watts in the power receiver.
• Target Application : Laptops/Power tools/garden tools /home appliances
industrial applications/medical Applications /Tablets / e Bikes
•Wireless Power in Kitchens. Appliances without cables and connectors will
deliver a safer, more flexible and convenient cooking environment. Powering this
new way of cooking will be wireless power delivering up to 2,000 watts.
•Charging at a distance. Using tuned-resonance technology, Qi is adding the
ability to charge existing Qi receivers at up to 35mm. This innovation allows the
Qi transmitter to be mounted below the surface of a desk, table or counter and
turns that surface into a charging area.

9. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
• POWERMAT
• POWER BY PROXI
• QI OR WIRELESS POWER CONSORTIUM (WPC)
• MOJO MOBILITY
• WI POWER
• MOPAR

10. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
POWERMAT
They developed a wirless charger which uses a “ring” that enables
you to Charge your smartphone or table through this technology .
Place the ringed-in device on a mat and it begins charging. If your
phone is enabled with it prior , you can even charge it without the
ring.
For detailed information :
https://www.powermat.com/faq/

11. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
POWER BY PROXI
This company specializes in wireless charging tech for smartphones
and tablets, wearables, AA batteries, and even industrial application.
Concept : Electrical currents are transmitted from a mat or
electronic bowl-like platform to keep your electronics gadget
charged .
For detailed information :
http://powerbyproxi.com/

12. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
Qi OR WIRELESS POWER CONSORTIUM (WPC)
It is supported by almost 200+ members (including some big names
from mobile manufacturers industry and semiconductor giants)
there are currently 900 products having Qi label and 50 million
Users present worldwide.
Concept :
It relies on an high frequency alternating current that moves
through a coil via a charging pad to device need to get charge .

13. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
WIRELESS POWER CONSORTIUM (WPC)
Development :
28 approved transmitters Compatible with existing Qi Receivers .
Interoperability :
If you have Qi device than any Qi wireless charger can Fuel it .
Qi standard guarantees wireless charging interoperability within Qi
Devices regardless of manufacturer or Brand .
For detailed information :
https://www.wirelesspowerconsortium.com/

14. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
Member overview :

15. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
MOJO MOBILITY
They have been developing wireless charging technologies for
products ranging from wearable electronics to mobile phones and
even high power.
Selling point : It can charge multiple devices at once anywhere on
the charger, unlike many competitors that only allow for the
charging of one device, and then only if the device is positioned
correctly.
For detailed information :
http://www.mojomobility.com/home

16. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
WI POWER
This wireless solution is developed by industry
giant Qualcomm through the Alliance for Wireless Power Standard.
Concept & Selling point :
Qualcomm is marketing the charging technology as not just power
for your smartphone, but for devices like digital frames, mice and
keyboards.
For detailed information :
https://www.qualcomm.com/products/wipower

17. COMPANIES PUSHING WIRELESS CHARGING IN MAIN
STREAM
MOPAR
This company is one of several that are providing in-car wireless
charging these days. Mopar offers wireless charging cases and pads
that allow you to power up without cables even while driving in the
fast lane.
For detailed information :
http://www.mopar.com/

18. WIDE RANGE OF APPLICATIONS
• Wide Range of mobile devices
Mobile phone , Tablet , Camera , MP3 Player ,MID (Mobile Intelligent device ),
Battery Charging , or other suitable loads
• Wide Range of Locations
Office, Residential (bedroom, kitchen family area , bathroom..), Hotels , Coffee Shops,
Public Waiting Areas, Educational (Schools , Universities , libraries ..), Airport,
Aircraft seats , Medical, Automotive , Theaters, Restaurants etc.

19. ARRAY OF OPPORTUNITIES

20. APPLICATION SOLUTION EXAMPLES

21. WHY DO WIRELESS CHARGING
- CCC (3X Convenience )
- Connector fatigue and failure can be avoided
- Hermetically sealed devices are possible
- Ability to “graze“ energy rather than “gorge” means users will
have well charged devices when they pick up a device and go

22. MARKET FORECAST OF WIRELESS
CHARGING

23. WIRELESS ENERGY TRANSFER OVERVIEW

24. WIRELESS ENERGY TRANSFER WORKING

25. WIRELESS ENERGY TRANSFER WORKING

26. WIRELESS ENERGY TRANSFER WORKING

27. WIRELESS ENERGY TRANSFER WORKING

28. WIRELESS ENERGY TRANSFER WORKING

29. WIRELESS ENERGY TRANSFER WORKING

30. WIRELESS ENERGY TRANSFER WORKING

31. WIRELESS ENERGY TRANSFER WORKING

32. WIRELESS ENERGY TRANSFER WORKING

33. WIRELESS ENERGY TRANSFER WORKING

34. WIRELESS ENERGY TRANSFER WORKING

35. WIRELESS ENERGY TRANSFER WORKING

36. INDUSTRY ACCEPTED STANDARDIZATION