Linear Piston for a Magnetic Repulsion Electric Generator.

Last crawled date: 4 years, 3 months ago

This is a linear piston that will be used in a Magnetic Electric Generator project. This is currently a work in progress. The goal is to create a Magnetic Repulsion Piston that uses 1/2 inch N50 grade Neodymium Cylindrical Magnets. The piston will move linearly through a set of coils to generate Voltage and Current.
One preliminary test produced 7.2V DC with an output current of 1.0 Amps at 1300 RPM passing the piston through 3 Magnet Wire Coils that were 1/4 inch wide with 25 Feet of Magnet Wire wrapped around each Coil. The output measurements were taken across all of the coils which were connected in parallel. The Linear Piston does not have to move far about 1.25 inches back and forth through the 3 Magnet Wire Coils.
For each revolution of the drive wheel the repulsion piston will induce 6 power pulses inside of each individual coil. Since the magnets are 1/2 inch long the the North Pole is
approximately 1/4 inch long and the South Pole is approximately 1/4 inch long. So, a good starting point is to make sure the air gap between the two magnetic poles that are facing each other in a repulsion configuration are spaced 1/4 inches apart. This air gap distance produces good results. If you think of the magnetic field lines as a traveling wavefront you can try different coil wrapping techniques to study how they respond when a magnetic field is moving through them. A piece of magnetic film is useful to see the magnetic field lines in the repulsion area of the linear piston.
KS Metals sales brass tubing in 12 inch lengths which can be found at ACE Hardware stores. I got a 1/2 inch diameter tube to hold the 1/2 Neodymium Magnets. I got a 17/32 inch diameter brass tube to wrap the magnet wire coils around. The 1/2 brass tube will slide back and forth inside the 17/32 brass tube. The distance between the surface of magnets to the start of the magnet wire in the coils is around 45.25 thousandths of an inch. A light machine oil should be applied between the brass tubes to reduce friction. The closer you can get the magnet wire coils to the surface of the magnets the stronger the magnetic field is which will produce more Voltage and Current at a specific RPM.
I am trying to use 3D printing to build a small desktop version and get close to these same results.
These parts were designed using the Freeware Version of the EMachineShop software.
To watch a Video about this Linear Piston Generator project visit the following YouTube
link:
https://youtu.be/vvqzisL-Zrg