Author Topic: axial generator with lamination core (Read 114396 times)

mbouwer · « **Reply #495 on:** September 03, 2021, 08:27:55 AM »

The rear wheels with the flanges that I have counterfeit from the typical 3020 wheels.

mbouwer · « **Reply #496 on:** September 19, 2021, 02:28:16 PM »

Making a model of the 3020 I see as an exercise in between
to then continue making a model of a professional turbine.

mbouwer · « **Reply #497 on:** September 24, 2021, 08:44:53 AM »

The 3020 needs a 4 cylinder, and that's why I started making a crankshaft for a solinoid engine.

mbouwer · « **Reply #498 on:** September 26, 2021, 08:27:13 AM »

Starting with a test setup of a 2 cylinder.
I now want to make the plungers, connecting rods and coils.

electrondady1 · « **Reply #499 on:** September 26, 2021, 09:46:36 AM »

sure, sure, make your own engine.

joestue · « **Reply #500 on:** September 27, 2021, 02:18:21 AM »

i'm wondering what is going on here...

mbouwer · « **Reply #501 on:** September 27, 2021, 03:46:09 AM »

My intention is to meet windmill friends who also want to build a real working model of a professional wind turbine.
Just like I'm now shaping a model of a tractor.

Astro · « **Reply #502 on:** September 27, 2021, 09:16:52 PM »

I built a sterling engine some years back. It worked really well, except I mage the flywheel by hand. I just bent some round rod into a circle and added some round rod spokes. It was not balanced even a little and would dang near fly off the table if I put any more heat then just a small candle to it. But it was fun to do.
I have seen some videos of some really nice ones, if you have a mill, lathe and all that stuff.
I love that tinkering in the shop time.

SparWeb · « **Reply #503 on:** September 28, 2021, 01:20:48 AM »

Scroll back up to find this:

Quote

and that's why I started making a crankshaft for a solinoid engine.

So, I guess it's a... umm... I dunno what that's supposed to do.

But art for art's sake is fine, and fun to look at. Pass the popcorn.

GreenTeam · « **Reply #504 on:** October 11, 2021, 05:57:53 AM »

Quote from: electrondady1 on September 26, 2021, 09:46:36 AM

sure, sure, make your own engine.

hey wanna have it run on water also? seen a youtube vid of cracking hydrogen from water!

Bruce S · « **Reply #505 on:** October 13, 2021, 02:50:37 PM »

I'm watching these builds.
I'm curious about the use of the solenoids.

Bruce S

mbouwer · « **Reply #506 on:** October 29, 2021, 04:00:39 PM »

The shaping of a powerful solenoid engine as a drive is a problem.
Back to the components of the electric wheelbarrow.

Astro · « **Reply #507 on:** October 29, 2021, 04:33:38 PM »

I have been playing in the shop as well. It is chilly, but not cold here yet, so I am able to still get out there a little.
I am taking my wash machine motor (it is ac and no brushes) and building a stand for it and wiring a light switch to shut off the start windings.
That way I have something to test spinning things with. From there I will just install a rpm meter so I know how fast I am spinning things. I am going to try and put a dimmer switch on the low speed windings and see if I can adjust the rpms a little.
So, building test equipment with what is lying around.

mbouwer · « **Reply #508 on:** November 11, 2021, 09:10:05 AM »

My electric garden tractor after a model of a real tractor.
That's how I also want to build my windmill. A small working version of, for example, a Haliade or an Enercon.

Bruce S · « **Reply #509 on:** November 12, 2021, 08:35:46 AM »

Very nice. Do you have a estimate of the running time on the batteries ?

Cheers
Bruce S

mbouwer · « **Reply #510 on:** November 14, 2021, 01:49:55 PM »

So far we have only used the tractor for light jobs, and I have not had to charge the 4 Ah battery. I think the working time is an hour.

Now I can spend more time on wind energy again.

mbouwer · « **Reply #511 on:** November 15, 2021, 12:17:53 PM »

Plenty of great information in Adriaan Kragten's thread:
Design of a PM generator for a wind turbine.

It inspires to make a new test setup.

mbouwer · « **Reply #512 on:** November 16, 2021, 09:08:53 AM »

The yaw bearing.
The top of the mast consists of 2 hardened steel rings of scrapped bearings.
I want to drive the pivot at about 1 revolution per minute.
Maximum 2 turns clockwise and 2 turns counterclockwise.
Then there is no uncontrolled cable twist.

mbouwer · « **Reply #513 on:** November 19, 2021, 03:46:40 PM »

Not much space in the nacelle, so I want to drive the yaw bearing from below in the mast.

mbouwer · « **Reply #514 on:** November 22, 2021, 10:34:52 AM »

The cable goes through the slots and then 2x around the greased yaw bearing pivot.
Via the guides to the bottom of the mast.
I intend to finish the guides nicely so no moisture can get in.

mbouwer · « **Reply #515 on:** November 24, 2021, 09:02:23 AM »

The simple cable drum which I will mount in the bottom of the mast to operate the yaw bearing.

mbouwer · « **Reply #516 on:** November 27, 2021, 08:42:03 AM »

With spring pressure I can give the yaw bearing more than enough torque.

mbouwer · « **Reply #517 on:** November 29, 2021, 10:17:11 AM »

To drive the drum I have a 12 V motor with gearbox from a drilling - screwing machine.
This drives a worm and the worm gear on the cable drum at a very low speed.
The worm gear prevents the torque of the yaw bearing moving the drum.

mbouwer · « **Reply #518 on:** December 02, 2021, 10:30:11 AM »

First I now want to continue with the axial generator.
If both magnet rings are already mounted on the main bearing I can turn them nicely in 1 clamping.
Just on the right in-between size.
Then the gap between the magnets and the lamination cores in the coils can become thinner.
The solid auxiliary shaft I can remove later.

mbouwer · « **Reply #519 on:** December 03, 2021, 10:13:45 AM »

Here the magnet rings are mounted for a lamination package and a coil height of 13 mm.

Bruce S · « **Reply #520 on:** December 03, 2021, 12:22:41 PM »

Have you decided on the magnets you will be using?

Bruce S

mbouwer · « **Reply #521 on:** December 04, 2021, 10:13:07 AM »

For this test set up I intend to glue 20 magnets 10 x 4 ( thickness 2 mm ) on each magnet ring.
And in the stator 18 coils with lamination core.

mbouwer · « **Reply #522 on:** December 05, 2021, 02:46:46 PM »

With this main shaft I have 8 mm bore. The whole blade adjustment mechanism sticks out in front of the axis.
With a new main shaft with a larger bore I can mount the mechanism inside the shaft.

Bruce S · « **Reply #523 on:** December 06, 2021, 08:55:10 AM »

I wondering what output you are looking for?

Cheers
Bruce S

mbouwer · « **Reply #524 on:** December 07, 2021, 03:48:46 AM »

The idea is to make a test stand as complete as possible.
Driven yaw bearing, axial generator, active blade pitching, etc.
Output: for example aiming for 50 Watt at 30 rpm.

mbouwer · « **Reply #525 on:** December 09, 2021, 02:01:39 PM »

This axle and hub are more suitable with 20mm bore in the shaft to guide the actuation mechanism of the pitch control.
2 raceway grooves with 40 mm spacing, and each containing 17 x 6.4mm balls.
Magnet rings 104 mm outer diameter.

Bruce S · « **Reply #526 on:** December 10, 2021, 08:37:27 AM »

I noticed the 12 jack screws. How are they held in place? Are the holes bottom tapped ? with the screws held in with a locking glue?

Once again nice machining!!

Bruce S

mbouwer · « **Reply #527 on:** December 11, 2021, 04:08:33 AM »

@Bruce S

You are right. Once the stator is mounted, the bolt heads are difficult to reach.
So for the final assembly I'd better secure them with a drop of glue.

Detail of the (triangular) hub.

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Author Topic: axial generator with lamination core (Read 114396 times)