TheBackShed.com

Forum Index : Windmills : Newbie Smart drive Questions

Page 1 of 2

Author

Message

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 07:14pm 21 Jul 2012

Copy link to clipboard

Print this post

Hi Guys,

If I wire a smart drive as 7 phase, what is the likely Amperage and Voltage output. I know it depends on the wind blowing but say at 300rpm.

Can I reshape the poles and wire in 7 phase to completely eliminate the cogging effect?

Can I replace the stator magnets with NdFeB Grade 50 magnets for greater effeciency? Has anyone tried this?

Can I buy cogless F&P smart drive motors? As I'm wanting about 3 amps with 300rpm, do I need a 100 series for the the thicker copper windings or will the 60 series still be able to deliver the amps?

Whats a fair price to pay for a F&P smart drive motor?

As I don't have one yet, is there a pdf with the physical sizes so I can look at the mounting requirements?

Regards,
Dale.

brucedownunder2
Guru

Joined: 14/09/2005
Location: Australia
Posts: 1548

Posted: 11:07pm 21 Jul 2012

Copy link to clipboard

Print this post

Hi Dale ,,

Your in luck ,,it's all here, just grab a coffee ,and sit for an hour reading the posts ,,we've been posting all what you want for ,maybe 15 years now , so maybe a couple coffee's,lol.

and if you are around the gold coast , I'll give you a starter pack ,now how's that?

Sorry, I don't do post office , they ask funny questions and the que's are out to the main road ,,not my thing.

Bruce.

Bushboy

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 11:35pm 21 Jul 2012

Copy link to clipboard

Print this post

Hi Bruce,

Thanks for your reply. Yeah I've already started reading. The first thing I've realised is that you guys are really experienced and knowledgable. Spend my first coffee on here this morning. Grabbed a few pdf's I'll print out tomorrow.

What I'm looking for is help on is a completely cogless motor. Delivering a few amps on about 300rpm.

How are your projects going? Are you self sufficient? Unfortunately, I live in Melbourne but I would really love the starter pack. I would even give you money for it. Thats really generous of you. I'm from Brisbane and if I was there, I'd be knocking on your front door right about now.

Regards,
Dale.

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 11:39pm 21 Jul 2012

Copy link to clipboard

Print this post

Hi Bruce,
Maybe I could arrange a courier or something to pick it up from you?

Regards,
Dale.

Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5078

Posted: 02:05am 22 Jul 2012

Copy link to clipboard

Print this post

Hi Dale

The 7 phase conversion ( using the late model hub on a early mode stator ) is pretty cogless anyway, there is nothing you could do to improve it.

Amps depend on volts, what voltage to you want to run the thing into.

Expect a watt per RPM, so at 300 rpm you could expect 300 watts.

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 01:09pm 22 Jul 2012

Copy link to clipboard

Print this post

Hi Glenn,

Thanks for replying, OK so 7 phase is the way to go. Is it as cogless as an air core coil stator? Just trying to guage the level of coglessness. Sorry If I am being pedantic about this.

I'm wanting 300 Watts at 300rpm. 100Volts at 3 Amps would make me a very happy camper.

Regards,
Dale.

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 04:18pm 22 Jul 2012

Copy link to clipboard

Print this post

Hi Guys,
Has anyone tried having 2 rotors on the same shaft to minimise the cogging effect? This would solve alot of my issues and without the need to convert to 7 phase.

Regards,
Dale.

Tinker

Guru

Joined: 07/11/2007
Location: Australia
Posts: 1904

Posted: 03:26am 23 Jul 2012

Copy link to clipboard

Print this post

leftcliq said Is it as cogless as an air core coil stator? Just trying to guage the level of coglessness. Sorry If I am being pedantic about this.

Dale.

I played around with the 7 phase set up, there is *no* perceptible cogging at all when the shaft is turned by hand.
You can sleep easy now

with no more cogging nightmares

Klaus

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 09:51pm 23 Jul 2012

Copy link to clipboard

Print this post

Hi Tinker,
Thanks for the update. Looks like I have to brush up on my soldering skills. But do I need a certain rotor to go with the 7 phase stator?

Regards,
Dale.

Tinker

Guru

Joined: 07/11/2007
Location: Australia
Posts: 1904

Posted: 02:00am 24 Jul 2012

Copy link to clipboard

Print this post

leftcliq said Hi Tinker,
Thanks for the update. Looks like I have to brush up on my soldering skills. But do I need a certain rotor to go with the 7 phase stator?

Regards,
Dale.

Short answer: yes. I bought a new rotor at a F&P parts supplier.
You will find exact details elsewhere in this forum, just do a little searching - it's educational

Klaus

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 03:20pm 25 Jul 2012

Copy link to clipboard

Print this post

Hi Tinker,
I have the part number for the new magnet hub but do you know the part number for the stator? Do you know of a F&P repairer in Melbourne?

Regards,
Dale.

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 04:04pm 25 Jul 2012

Copy link to clipboard

Print this post

Hi Guys,
Yes, I know I ask alot of questions. I am super eager to get this going.

Regarding having two offset rotors on the same shaft to make it cogless. Could I have 2 stators offset from each other and have the two rotors not offset? Hope this makes sense. This way, I don't need to cut and reweld the shaft to make the second rotor offset from the first.

I am wanting to make this and have a 7 phase motor as well.

Any thounghts?
Dale.

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 07:03pm 25 Jul 2012

Copy link to clipboard

Print this post

Hi Guys,

OK, after much looking around and reading, I'm going to buy a Type 4 Cogless F&P Smart drive from Ecoinnovation. Has anyone bought one of these that I can have a chat with? Are they 3 phase? Are they truly cogless? Will they suit a 12mm type 2 internal thread shaft?

Regards,
Dale.

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 11:57pm 29 Jul 2012

Copy link to clipboard

Print this post

Hi Guys,

Can any 3 phase motor be made cogless?

Regards,
Dale.

CraziestOzzy

Senior Member

Joined: 11/07/2008
Location: Australia
Posts: 135

Posted: 12:37pm 30 Jul 2012

Copy link to clipboard

Print this post

leftcliq said Regarding having two offset rotors on the same shaft to make it cogless.

I can answer this one...off-setting two motors on the same shaft will only reduce cogging. I have a dual rotor thing in my shed I hacked together with some nuts and bolts. I don't see how cogging will be an issue (although present still) with two motors off-set in the manner you describe.

http://cr4.globalspec.com/member?u=25757

http://www.instructables.com/member/OzzyRoo/

fillm

Guru

Joined: 10/02/2007
Location: Australia
Posts: 730

Posted: 11:47pm 30 Jul 2012

Copy link to clipboard

Print this post

Hi Dale,

With the last duals that I built , buy twisting the poles and carefully aligning the two stators on the dual bearing hub, cogging was reduced to virtually nothing . It really doesn't matter if you use the GOE 222 blades to power you mill as they will start a dual in under 2.5m/s . Under that w/s there is no power to be made anyway but if the blades keep spinning then they are ready for any wind puffs in low wind situations.

If you are using blades cut from PVC pipe or similar then a coggless F&P may be beneficial as they do not work as well in low wind .

Best combination for a dual is 1 x 100s + 1 x 80S , Twisted poles + cap doublers with a 2.8 to 3m blade set (depending on your wind conditions), this combo was peaking at close to 1kW and produce well in Low Wind as well.

Heres a link to the dual I built KarlJ .. HERE Edited by fillm 2012-08-01

PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 02:11am 03 Aug 2012

Copy link to clipboard

Print this post

Hi Guys,
Really appreciate all of the help you guys are giving. Hope these answers can help someone else in the future.

On the 60S stator, there is a funny ground connection. Does anyone know how to attach a wire to this connector? I've never seen this connector before.

Regards,
Dale.

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 10:05pm 05 Aug 2012

Copy link to clipboard

Print this post

Hi,
I forgot to mention that the 60s is a type 4 cog-free 60s motor. It has a funny connector that I've never seen before.

">Type 4

Regards,
Dale.

leftcliq
Regular Member

Joined: 21/07/2012
Location: Australia
Posts: 51

Posted: 08:54pm 06 Aug 2012

Copy link to clipboard

Print this post

The link is : here

Regards,
Dale.

fillm

Guru

Joined: 10/02/2007
Location: Australia
Posts: 730

Posted: 02:56am 08 Aug 2012

Copy link to clipboard

Print this post

Would it be better to be asking Ecco Innovation , I take it that you purchased the Type 4 stators from them .

PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits

Page 1 of 2

Print this page