Linear generator for the thermoacoustic Stirling engine
My engines 7:53
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I show the entire manufacturing process of the new powerful linear generator with machining the iron core, winding different copper coils on the lathe and designing parts with FreeCAD for 3D printing.Then I present first performance and efficiency tests to prepare the attachment on the thermoacoustic Stirling engine.
If you want to support me you get access to exclusive content: https://www.patreon.com/c/Stirlingengines https://www.youtube.com/channel/UCie-_1q_BTL_cpPN_6f0gHw/join
Thanks to Baptiste (alias OfficialyMax) we now have a Discord server:
https://discord.com/invite/TDABS5z2mT
It would be very nice if we could discuss there everything about Stirling engines, 3D printing and more, thank you very much Baptiste.
Developing an engine that generates electricity from various heat sources and that anyone can replicate using simple means has been my goal for many years.
The next step is to use the elegant thermoacoustic engine to drive an electric generator.
In the last video, I used the finite element method to design a linear generator theoretically and started building it.
Now I will show you the entire manufacturing process of the generator and present the first performance and efficiency tests.
My main aim is to develop a simple, reliable and powerful engine, for example for a combined heat and power plant, which anyone can build themselves without the need for expensive machinery.
The basis is a thermoacoustic engine, which now has enough power to drive a generator.
This is important for the upcoming extensive development steps in order to be able to directly measure which changes bring about an increase in performance.
After several attempts with a turbine, oscillating stepper motors, a push crank mechanism and a simple radial linear generator, I would now like to test a more powerful flat linear generator.
In the last video, I demonstrated its design using the finite element method and the FEMM program.
Now it's time for the finishing work, and here I would like to show you the entire manufacturing process from start to finish, as requested by many in the comments.
The flat linear generator consists of an iron housing with five pairs of magnets facing each other.
The copper coils oscillate through the strong magnetic field between the magnet pairs, inducing a current in the coils.
First, I milled and drilled the iron cage and cut the threads for assembly.
Gluing the magnets precisely onto the iron plates was only possible with the help of two 3D printed templates, and even then it was still difficult to overcome the strong magnetic forces.
I designed the carriage for the coils and the mounts for the round guides in FreeCAD and printed them from simple PETG.
For comparison tests, I tried one coil made of 0.5 mm coated copper wire with about 50 turns and one coil made of 0.2 mm copper wire with about 200 turns.
The construction of the coils is, of course, very important.
The coil made of 0.5 mm wire has a low resistance of 0.2 ohms, but the 50 turns are probably very few.
The 0.2 mm copper coil has a very high resistance of around 10 ohms, but the 200 windings are most likely better suited to generating usable voltages.
I would be very grateful for your help in the comments, especially regarding the design of the coils.
I need to see if I can simulate this with FEMM or calculate it in another way.
I will now use the experience I have gained to improve the carriage, optimize the coils and then attach the linear generator to the thermoacoustic motor.
I hope to achieve higher movement speeds and better results in order to obtain a reliable performance measure for the thermoacoustic engine.
As always, I look forward to your comments, especially regarding the optimisation of the coils, but also to general suggestions and opinions on how the linear generator can be improved.
Thank you very much for your interest!
Thanks for the background music:
Song: Jim Yosef - Eclipse [NCS Release]
Music provided by NoCopyrightSounds
Free Download/Stream: http://ncs.io/eclispe
Watch: • Jim Yosef - Eclipse | House | NCS
If you want to support me you get access to exclusive content: https://www.patreon.com/c/Stirlingengines https://www.youtube.com/channel/UCie-_1q_BTL_cpPN_6f0gHw/join
Thanks to Baptiste (alias OfficialyMax) we now have a Discord server:
https://discord.com/invite/TDABS5z2mT
It would be very nice if we could discuss there everything about Stirling engines, 3D printing and more, thank you very much Baptiste.
Developing an engine that generates electricity from various heat sources and that anyone can replicate using simple means has been my goal for many years.
The next step is to use the elegant thermoacoustic engine to drive an electric generator.
In the last video, I used the finite element method to design a linear generator theoretically and started building it.
Now I will show you the entire manufacturing process of the generator and present the first performance and efficiency tests.
My main aim is to develop a simple, reliable and powerful engine, for example for a combined heat and power plant, which anyone can build themselves without the need for expensive machinery.
The basis is a thermoacoustic engine, which now has enough power to drive a generator.
This is important for the upcoming extensive development steps in order to be able to directly measure which changes bring about an increase in performance.
After several attempts with a turbine, oscillating stepper motors, a push crank mechanism and a simple radial linear generator, I would now like to test a more powerful flat linear generator.
In the last video, I demonstrated its design using the finite element method and the FEMM program.
Now it's time for the finishing work, and here I would like to show you the entire manufacturing process from start to finish, as requested by many in the comments.
The flat linear generator consists of an iron housing with five pairs of magnets facing each other.
The copper coils oscillate through the strong magnetic field between the magnet pairs, inducing a current in the coils.
First, I milled and drilled the iron cage and cut the threads for assembly.
Gluing the magnets precisely onto the iron plates was only possible with the help of two 3D printed templates, and even then it was still difficult to overcome the strong magnetic forces.
I designed the carriage for the coils and the mounts for the round guides in FreeCAD and printed them from simple PETG.
For comparison tests, I tried one coil made of 0.5 mm coated copper wire with about 50 turns and one coil made of 0.2 mm copper wire with about 200 turns.
The construction of the coils is, of course, very important.
The coil made of 0.5 mm wire has a low resistance of 0.2 ohms, but the 50 turns are probably very few.
The 0.2 mm copper coil has a very high resistance of around 10 ohms, but the 200 windings are most likely better suited to generating usable voltages.
I would be very grateful for your help in the comments, especially regarding the design of the coils.
I need to see if I can simulate this with FEMM or calculate it in another way.
I will now use the experience I have gained to improve the carriage, optimize the coils and then attach the linear generator to the thermoacoustic motor.
I hope to achieve higher movement speeds and better results in order to obtain a reliable performance measure for the thermoacoustic engine.
As always, I look forward to your comments, especially regarding the optimisation of the coils, but also to general suggestions and opinions on how the linear generator can be improved.
Thank you very much for your interest!
Thanks for the background music:
Song: Jim Yosef - Eclipse [NCS Release]
Music provided by NoCopyrightSounds
Free Download/Stream: http://ncs.io/eclispe
Watch: • Jim Yosef - Eclipse | House | NCS
Playback is via YouTube's official embedded player. Data from YouTube; Exumo is not affiliated with YouTube.