This is just a brief on WPT basic ideas for young Engineers. References will help to get more adequate knowledge and will create more thirst to get into the real world of WPT.
3. Transmission of power/electrical energy without the need for a physical
connection/link
Wireless power transfer is useful to power electrical devices where
interconnecting wires are inconvenient, hazardous, or are not possible.
Introduction:
4. Non Radiative/ Near Field:
Magnetic coupling/ Inductive coupling
Electric field coupling/ Capacitive
coupling
Magnetic coupled Resonance
Radiative/ Far field:
Radio Frequency
Leaser Beams
5. To realize WPT let’s consider MPT
mechanisms
Transfer of power through space
by means of microwaves
Converts DC power to microwaves
Transmits microwave radiation to
a target
Target converts the Microwave
radiation back to DC power
WPT Mechanism:
6. Transmission Frequency:
2.45 GHz
5.8 GHz
8.5 GHz
10 GHz
35 GHz
2.45 GHz is the most efficient frequency to transmit microwaves.
7. Reception Antenna type and operating frequency:
Printed Diplomo (2.45GHz)
Circular patch (2.45GHz)
Printed Dual rhombic (5.6GHz)
Square Patch (8.51GHz)
A receiver has to receive and convert the microwaves back to DC. The device is known as
Rectenna which includes an antenna coupled with a rectifying circuit.
8. Can get rid of cables
Safe to use
Ease of Use
No plugging needed
Low Transmission Losses
Efficient
Advantages:
9. Interference –EMI, EMS.
Capital cost for practical
implementation is very high
Security Issues
Rectenna Size
Disadvantages:
10. References:
https://www.quora.com/What-are-the-disadvantages-of-wireless-power-transmission
[Wireless Power Transfer for Electric Vehicles and Mobile Devices] Chun T. Rim Gwangju
Institute of Science and Technology, South Korea Chris Mi San Diego State University,
California, USA
[A Review on Wireless Power Transfer] International Journal of Engineering Trends and
Technology (IJETT)] – Volume-40 Number-5 - October 2016 Mohamed M. El Rayes 1 ,
Gihan Nagib 2 , Wahied G. Ali Abdelaal 3 1 Teaching Assistance, Electrical Engineering
Department, Fayoum University, Egypt 2Associate Professor, Electrical Engineering
Department, Fayoum University, Egypt 3Professor, Computer & Systems Engineering
Department, Ain Shams University, Egypt.
[Cut the Cord: Wireless Power Transfer, its Applications, and its limits]
Rajeev Mehrotra, ramehrotra (at) go.wustl.edu (A paper written under the guidance of Prof.
Raj Jain.