Simple generator

[shantaram]

Hi kEho, instead of building  rotating machine, you can replace p magnets with c shaped electromagnet exited with 50/60 Hz supply.
shantaram

[broli]

Progress is still being made on this idea, I decided to pick this concept back up and finish what I started. I had ordered a custom cut toroidal core from China a while back and have most components ready for assembly.

[gotoluc]

Very cool Broli

Maybe you can use my Bucking Field Reluctance Motor Design to turn your generator: https://www.youtube.com/watch?v=TeO9iM2-29o

It may be a perfect marriage

Thanks for sharing

Luc

[broli]

Thanks gotoluc, I'll have to make sure it runs first before I can let it get married .

Meanwhile here's an interesting thought experiment. Take a sufficiently long solenoid with a ferromagnetic core inside of it. Get two magnets near it so they attract each other and close their flux path through the core of the solenoid. Now move one of them back and forth as to periodically increase/decrease the total amount of flux the solenoid is seeing in order to induce a voltage. This will give rise to a current if allowed to flow.

Now here's is the interesting bit. How is this induced current of this (arbitrary long) solenoid counteracting the movement of the reciprocating magnet? If you played with long solenoids before you'll know that their effect on anything (even a compass) is negligible near their middle. So where is the back-force, if any, coming from that tries to counteract the movement of the magnet?

[gotoluc]

Thanks gotoluc, I'll have to make sure it runs first before I can let it get married .

I understand ... maybe later when she's ready.

Meanwhile here's an interesting thought experiment. Take a sufficiently long solenoid with a ferromagnetic core inside of it. Get two magnets near it so they attract each other and close their flux path through the core of the solenoid. Now move one of them back and forth as to periodically increase/decrease the total amount of flux the solenoid is seeing in order to induce a voltage. This will give rise to a current if allowed to flow.

Now here's is the interesting bit. How is this induced current of this (arbitrary long) solenoid counteracting the movement of the reciprocating magnet? If you played with long solenoids before you'll know that their effect on anything (even a compass) is negligible near their middle. So where is the back-force, if any, coming from that tries to counteract the movement of the magnet?

Yes, interesting things when cores get long. To bad eddy currents increase and PM flux spreads all over the core.
If you would be willing to make a video demo of it I would definitely like to see it.

Thanks for sharing

Luc