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Homebrewed Electricity => Wind => Topic started by: mbouwer on November 07, 2017, 04:41:45 AM

Title: axial generator with lamination core
Post by: mbouwer on November 07, 2017, 04:41:45 AM
Windmill friends,

This forum seems to me the right place to exchange ideas on a test setup of an axial generator.
Now I have 2 magnet rings and an axle.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 07, 2017, 09:15:45 AM
Got 51 lamination packages now ( 20 x 8 x 8 ) cut out of transformer sheets.

I think of gluing  49 magnets 20 x 10 x 5 mm on the magnet backing rings ( thickness 4 mm)
Title: Re: axial generator with lamination core
Post by: joestue on November 07, 2017, 12:21:59 PM
Got 51 lamination packages now ( 20 x 8 x 8 ) cut out of transformer sheets.

I think of gluing  49 magnets 20 x 10 x 5 mm on the magnet backing rings ( thickness 4 mm)

odd numbers don't work for magnets.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 07, 2017, 01:18:05 PM
Of course.
Then I can go to 48 or 54 magnets.
Or does it make sense to go to the maximum of 80 magnets?
Title: Re: axial generator with lamination core
Post by: mbouwer on November 08, 2017, 03:04:01 AM
With 51 packages the space for the coil-legs is 8 mm.
I tend to 48 packages with coil-legs 9 mm.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 08, 2017, 07:52:53 AM
the mold to position the 48 blocks in the polyester of the stator.
Title: Re: axial generator with lamination core
Post by: SparWeb on November 08, 2017, 11:18:13 PM
Can you give us a reminder of the turbine specification you intend to build, please?
Blade diameter, airfoil type...
Generator number of magnetic poles, number of phases, expected power output...
Title: Re: axial generator with lamination core
Post by: mbouwer on November 09, 2017, 03:00:22 AM
Inspired by the professional windmills around, the idea is that I first need to create test setups,
 
to, together with windmill builders on this forum, search for a design of a light direct drive generator with operational reliability.

In doing so we must be able to build that generator with stuff that is common and easy available for me and windmill friends on the forum.

It seems to me that the generator is the most difficult component.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 10, 2017, 05:21:09 AM
If we could manage to get more collaboration we also can use each other's molds.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 11, 2017, 03:14:01 AM
Detail of the mold with attachment point and cutouts for the stiffening rings and the terminal of the stator.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 12, 2017, 03:58:17 AM
The packets are now pressed in a layer of polyester. Now ajusting my coilwinder to shape 24 coils of wire 0,5 mm.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 22, 2017, 03:32:59 AM
modified coilwinder.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 28, 2017, 05:51:30 AM
The coils pressed in the mold.
Now I want to connect them according to the scheme in reply #870 in the topic Active Pitchcontrol.
This time with 24 coils.
Title: Re: axial generator with lamination core
Post by: mbouwer on November 30, 2017, 05:12:37 AM
Taken the stator from the mold. Now going on with the other components.
Title: Re: axial generator with lamination core
Post by: mbouwer on December 02, 2017, 03:36:26 AM
The base ring for the statorbracket.
Composed of thin sheet material to save weight.
Title: Re: axial generator with lamination core
Post by: mbouwer on December 04, 2017, 06:37:16 AM
Stator bracket.
Title: Re: axial generator with lamination core
Post by: mbouwer on December 05, 2017, 09:14:14 AM
Stator on the teststand. Next is the hub and the magnet backing rings
Title: Re: axial generator with lamination core
Post by: mbouwer on December 06, 2017, 03:50:26 AM
Composite hub base.
Title: Re: axial generator with lamination core
Post by: mbouwer on December 09, 2017, 03:58:37 AM
Hub completed.
Now I want to continue assembling the magnet backing rings.
Title: Re: axial generator with lamination core
Post by: mbouwer on December 10, 2017, 03:35:13 AM
Rear magnet backing ring.
With reinforcements at the fixing points I think I need to use less iron (= less weight )
Title: Re: axial generator with lamination core
Post by: mbouwer on December 11, 2017, 06:57:17 AM
The composition mounted on a driven yaw bearing.
All this on the upper part of a polyester cladded lattice mast.
Now shaping the front magnet ring.
Title: Re: axial generator with lamination core
Post by: mbouwer on December 13, 2017, 08:16:35 AM
Basis for the front magnet ring.
Title: Re: axial generator with lamination core
Post by: mbouwer on December 15, 2017, 03:25:55 AM
After mounting the front magnet ring.
Title: Re: axial generator with lamination core
Post by: mbouwer on December 16, 2017, 08:13:03 AM
To be able to manage the forces during lowering the magnet backing rings,
I now made threaded holes with removable adjustment bolts.