DIY Wireless Energy Transfer System

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Introduction: DIY Wireless Energy Transfer System

About: Awesome Electronics Tutorials, Projects and How To´s

In this project I will show you how to create an appropriate coil and an inverter circuit for a wireless energy transfer system that can easily transfer a power of 20W. Let's get started!

Step 1: Watch the Video!

The video should give you a basic understanding on how to create the coils and inverter circuit. The next steps will contain additional information to make recreating this project even simpler.

Step 2: Order Your Parts!

Here you can find a parts list with example sellers for the inverter circuit (affiliate links).

Aliexpress:

4x IRLZ44N MOSFET: https://s.click.aliexpress.com/e/_dWhSrDl

2x IR2113 MOSFET Driver IC: https://s.click.aliexpress.com/e/_dYnDAx0

1x Resistor Kit: https://s.click.aliexpress.com/e/_dTPpXjt

1x Capacitor Kit: https://s.click.aliexpress.com/e/_dU4FEsB

1x Electrolytic Capacitor Kit: https://s.click.aliexpress.com/e/_d7dOwRz

2x UF4007 Diode: https://s.click.aliexpress.com/e/_dYR45Bh

3x Screw Terminal: https://s.click.aliexpress.com/e/_dYbstfZ

1x 7805 Voltage regulator: https://s.click.aliexpress.com/e/_dXSrfiP

1x TLC555 IC: https://s.click.aliexpress.com/e/_dTrUY9D

1x 74HC4049 IC: https://s.click.aliexpress.com/e/_dWXRFSE

1x 10k Trimmer: https://s.click.aliexpress.com/e/_dTFyPv5

Ebay:

4x IRLZ44N MOSFET: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

2x IR2113 MOSFET Driver IC: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Resistor Kit: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Capacitor Kit: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Electrolytic Capacitor Kit: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

2x UF4007 Diode: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

3x Screw Terminal: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 7805 Voltage regulator: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x TLC555 IC: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 74HC4049 IC: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x 10k Trimmer: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

4x IRLZ44N MOSFET: http://amzn.to/2hlFOa1

2x IR2113 MOSFET Driver IC: http://amzn.to/2goWD1G

1x Resistor Kit: http://amzn.to/2aAsWdV

1x Capacitor Kit: http://amzn.to/2hlE012

1x Electrolytic Capacitor Kit: http://amzn.to/2dL9dsO

2x UF4007 Diode: http://amzn.to/2hlNgBY

3x Screw Terminal: http://amzn.to/2aTTLNW

1x 7805 Voltage regulator: http://amzn.to/2hiHX62

1x TLC555 IC: http://amzn.to/2gCxOTT

1x 74HC4049 IC: http://amzn.to/2hlFxnB

1x 10k Trimmer: http://amzn.to/2goZzM1

I got the transmitter and receiver coil from Conrad:

https://www.conrad.de/de/senderspule-wireless-a10-...

Step 3: Build the Circuit!

Here you can find the schematic for the circuit as well as pictures of my finished board. Feel free to use them as a reference.

You can also find the schematic on the EasyEDA website: https://easyeda.com/GreatScott/IR2113_H_Bridge-09e...

Step 4: Success!

You did it! You just created your own Wireless Energy Transfer System!


Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab

https://www.facebook.com/greatscottlab

2 People Made This Project!

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15 Discussions

0
NealEhardt
NealEhardt

Question 1 year ago

Hi Scott, thanks for the tutorial! I copied the transmitter and receiver circuits exactly and found that Q1 and Q3, the MOSFETs to VCC, generate lots of heat. I tested with f=150KHz, VCC=12V, and with 47nF capacitors at the coils. I have a tiny (<0.01mA) load on the receiver: rectifier, capacitor, LED, and resistor. It works, but the transmitter draws 300mA from VCC. I added heatsinks and increased the power to VCC=30V and the current remained around 200mA. So hot!

The attached photos show the waveform between the two transmitter outputs and ground. When VCC=12V, the voltage at the transmitter coil peaks at 7V. When VCC=30V, the voltage at the transmitter coil peaks at 12V.

Why is this happening? What can I do to increase efficiency? I would like to release my PCB for other hobbyists to copy, but it needs to work better than this. Thanks for any help!

2019-09-05 12.47.20.jpgvlcsnap-2019-09-05-12h59m49s464.pngvlcsnap-2019-09-05-12h57m26s914.png
0
NealEhardt
NealEhardt

Answer 1 year ago

Oops, I had the diodes reversed. Freaking KiCad symbol "pspice:DIODE" is reversed. Much better now! I will revise the PCB and post the design soon.

0
ydkm
ydkm

Reply 1 year ago

Hi there, with VCC = 12V are u able to get 12V at the transmitter coil ??

0
NealEhardt
NealEhardt

Reply 1 year ago

Yep, here are voltage measurements from the transmitter outputs to ground; first pic VCC = 12V and second pic VCC = 20V. In the VCC = 20V configuration, the power supply is providing 32W and my receiver is producing about 15W of DC power (after rectify and smooth, but before voltage regulator). 45% efficiency is fine for me and this is awesome =D

2019-09-30 15.17.41.jpg2019-09-30 15.23.16.jpg
0
DebojitK
DebojitK

Reply 9 months ago

Hi Neal, Its good to see you were able to successfully build it. I am also trying to replicate the same. However, I am facing quite a few problems. Hope you would be able to help.
I have few alterations in the circuit though.
1. I used irf540n mosfets
2. Instead of series I used LC parallel resonance. I came to know that at resonance the LC tank behaves as an open circuit, meaning no power drawn by the receiver unless power is drawn on the receiver end. Can you say something on this point.
3. I am using ir2110 instead of 2113.
Now the problems:
1. The 555 circuit as given in the circuit is not able t o generate duty cycle of 50%, it is always 70-30. I could fix it by providing a correct control voltage by adding a 10k across pin 5 and gnd. I don't know what is the problem with the original circuit. Did you face the same problem?
2. The output waveform is even more peculiar. I will post some images.

I am having an ongoing discussion at https://electronics.stackexchange.com/questions/474020/ir2110-driven-mosfet-h-bridge-not-working-properly. You can check this for more details. I will post the output waveforms very soon.
I really need your help.

Thanks,
Debojit

0
DebojitK
DebojitK

Reply 9 months ago

I understand but the problem is the 555 output is 70-30 duty cycle. I am not sure why this is happening 555 circuits should be very basic. Are you getting 50% duty cycle from 555 with your pcb setup. I tried on breadboard and perfboard both but the result is same. Can you put some additional insight here?

0
NealEhardt
NealEhardt

Reply 9 months ago

Yes I'm getting 50% duty cycle out of the 555 timer. You probably made a wiring error or damaged one of the components. There are lots of other online resources that explain how to wire a 555 timer for PWM.

0
DebojitK
DebojitK

Reply 9 months ago

Will check the wiring once again

0
abehjardon
abehjardon

Reply 9 months ago

@NealEhardt Which of the DC power supply boxes are you using? And which would you recommend? Im looking to get this project started but I'm not sure about the power source. Maybe you have a picture or a drawing of how the power is set up to the board? I see the Final PCB picture you have up and its great, it just doesn't show the input power. This would be greatly appreciated.

1
WonekL
WonekL

3 years ago

hello,

i am beginner so maybe it can be dumm question.

i think there are more capacitors in result than in schematic. or do i miss something?

thank you for reply

1
TimC34
TimC34

3 years ago

What output voltage did you get on the receiver?

0
Suraj Bhawal
Suraj Bhawal

3 years ago

that's a really neat project.... I had a question that I asked on your YouTube video. but you may have missed it...

I wanted to know if we can use this concept and replace coils with 1:1 transformer to create an isolated dc-dc converter.

0
pumpdatbass
pumpdatbass

3 years ago

Assuming you have none of these parts handy, whats the cost for this project. and if i did my math right thats a 4A current? trying to figure out if this will work to charge a large cell phone battery. xD