Wireless Power Transfer
Model: 174  
CATEGORIES: ECE / ETC / ETM / IE EEE / EE / EN / PE Non-Microcontroller Projects Wireless Power Transmission Projects Utilisation of Electrical Energy Projects Electrical Circuits Projects Popular Projects
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PROJECT DESCRIPTION

The main objective of this project is to develop a device for wireless power transfer. The concept of wireless power transfer was realized by Nikolas tesla. Wireless power transfer can make a remarkable change in the field of the electrical engineering which eliminates the use conventional copper cables and current carrying wires.

Based on this concept, the project is developed to transfer power within a small range. This project can be used for charging batteries those are physically not possible to be connected electrically such as pace makers (An electronic device that works in place of a defective heart valve) implanted in the body that runs on a battery.

The patient is required to be operated every year to replace the battery. This project is designed to charge a rechargeable battery wirelessly for the purpose. Since charging of the battery is not possible to be demonstrated, we are providing a DC fan that runs through wireless power.

This project is built upon using an electronic circuit which converts AC 230V 50Hz to AC 12V, High frequency. The output is fed to a tuned coil forming as primary of an air core transformer. The secondary coil develops a voltage of HF 12volt.

Thus the  transfer of power is done by the primary(transmitter) to the secondary that is separated with a considerable distance(say 3cm). Therefore the transfer could be seen as the primary transmits and the secondary receives the power to run load.

Moreover this technique can be used in number of applications, like to charge a mobile phone, iPod, laptop battery, propeller clock wirelessly. And also this kind of charging provides a far lower risk of electrical shock as it would be galvanically isolated.

This concept is an Emerging Technology, and in future the distance of power transfer can be enhanced as the research across the world is still going on.

PROJECT HIGHLIGHTS
• High-Resonance Frequency Transformer. • Can be Customized for Arduino, Raspberry Pi, PIC • Easy to use, Self-explanatory kit. • Call/mail for Tech Support from 10 am - 7 pm. • Branding-free material. • Non-Microcontroller Project. • Extensive audio-visuals available. • All-inclusive solution kit.
BLOCK DIAGRAM
Hardware Requirements
• HF-Transformer• HF-diodes• rectifier• Transistors• Two air filled inductor coils• Voltage regulator• BLDC fan
Software Requirements
None
PROJECT RESOURCES
• Project Abstract
• Seminar Presentation
Q & A
Q:  Is it possible to increase the transmitting range?
A:  Yes, it is possible to increase the transmitting range. For this, please refer model no.343 for a larger distance about 10cm. Here is the link:
http://www.edgefxkits.in/wireless-power-transfer-in-3d-space
Q:  What is wireless power transfer?
A:  Wireless power transfer is transferring of power wirelessly, using mutual induction of 2 coils in HF.
Q:  What is the concept used in this project?
A:  The project follows the concept of using inverters with high frequency transformers to generate AC signal of higher frequency.
Q:  Can a lamp be used as a load?
A:  Yes, a lamp can be used as a load. Follow the link for model number 343:
http://www.edgefxkits.in/wireless-power-transfer-in-3d-space
Q:  Can I use LEDs instead of fan motor as the load?
A:  Yes, a maximum of 100 white LEDs can be used.
Q:  Can the power be transferred wirelessly, even if I place a object in between?
A:  Yes, power can still be transferred.
Q:  Can one increase the transfer distance?
A:  Check our project 343 for longer distance. https://www.edgefxkits.com/wireless-power-transfer-in-3d-space
Q:  Are the formulae used in the project available in the documents?
A:  Based on Resonant frequency, calculating the capacitor value on measured coil inductance is available in the documentation provided with the project.
Q:  Is it possible to add both devices together such as bulb and fan?
A:  A small LED load and a fan can work together.
Q:  How to achieve the resonant power transfer between the two coils & to have them at resonance?
A:  F=1/2Pi*sqrt (L*C)-(http://www.1728.org/resfreq.htm) Example At F=40 KHz , For resonance -C=0.13uF is in series with the coil of about 117 uH.
Q:  Can we develop pure sine wave at high frequency?
A:  We suggest you to try our model 343 that can deliver up to 50 KHz pure sine wave for about 5 watts wirelessly at a distance of 1 foot.
Q:  Can you increase the separation between primary and secondary coil by around 30 cm?
A:  Yes. Please refer to our project model no. 343.