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Topic Title: Small permanent magnet alternators
Topic Summary: Supplier sought
Created On: 01 September 2006 09:14 AM
Status: Read Only
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 01 September 2006 09:14 AM
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alan davies

Posts: 1
Joined: 18 April 2006

I am trying to find a supplier of small permanent magnet alternators for use on micro-hydro applications. Power around 1 kW, speed around 1500 rpm. Such alternators are commonly used on small wind generators, but are designed for much slower speeds, and are typically mounted on the wind generator shaft. Similar, higher speed, units are used for portable petrol generators, but again are usually overhung on the engine shaft. I would prefer a free-standing unit with its own bearings, and preferably a weather-proof enclosure.

If anyone knows of a (preferably UK) supplier, I would be pleased to hear of one.

Thanks, Alan Davies
 05 January 2007 11:53 AM
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deleted_geoffd123

Posts: 1
Joined: 05 January 2007

Hi Alan checkout the following:

Link removed/products.html

Cheers
Geoff Drake
 09 January 2007 01:21 PM
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rogercampbell

Posts: 5
Joined: 18 June 2002

Hi Alan

We have been evaluating the Futureenergy PMG but our findings indicate that it is not capable of 1KW sustained output. We have partially or completely burnt out 3 or 4 of these units operating as a Wind turbine.
They are very good people to work with but I think the product will soon be derated to say 800W.
I may be able to supply an alternative more robust higher power PMG if you give me a better idea of the Spec re: voltage; peak power; average power, quantity, when required etc.

Roger
 10 January 2007 11:02 PM
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deleted_conwayma2005

Posts: 2
Joined: 10 January 2007

Hi Roger.

Just happened to notice your comments to Alan. I am also looking for a PMG. My requirements are as follows.

Operating RPM -500 Max
Voltage - 48V DC
Peak Power - 3 - 10kW
Average Power - 1-5kW
Quantity - I am currently trying to design a turbine so initially I am looking for 1 only with a view to more obviously.
When Required - ASAP.

Hopefully you can help me on this.

Many thanks

Martin Conway
 12 January 2007 07:50 AM
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rogercampbell

Posts: 5
Joined: 18 June 2002

Hi Martin,

Yes I'm sure we can help you here. I've sent you an email so we can take discussions offline.

Rog
 12 January 2007 06:27 PM
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deleted_conwayma2005

Posts: 2
Joined: 10 January 2007

Roger

I haven't received any e-mail yet.

Regards

Martin
 16 January 2007 09:08 AM
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rogercampbell

Posts: 5
Joined: 18 June 2002

Perhaps your email address is not up to date in your profile?
Anyhow if you email mailto:info@freenergy.ltd.uk we can go from there.

Rog
 20 January 2007 11:02 PM
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deleted_TideMine

Posts: 1
Joined: 20 January 2007

I am also looking foran alternator for a prototype tidal mechanisim. I have about 100w of power (torque) placed upon an axil of about 60 rpm. Any advice or direction would be warmly appreciated. The testing of the tidal device itself has proven very encouraging. Can send short vid-clip.
 29 January 2007 04:33 PM
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d_howey

Posts: 3
Joined: 26 April 2002

Dear Alan,

I've just seen your message about PM alternators for hydro systems. I'm a PhD student at Imperial College working on small hydro and might be able to help with a PMA system appropriate to your needs. For hydro I guess you will be looking at higher rpm than wind and therefore the number of poles, turns and so on will be different to a wind system PMA.

If you want to discuss this further, please email me d.howey@imperial.ac.uk

all the best
Dave Howey
 02 February 2007 07:42 PM
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deleted_GabrielT

Posts: 1
Joined: 02 February 2007

Hi all,

Just saw your comments for a PMG. I too am looking for a PMG or integrated starter alternator of the kind that is fitted to hybrid cars. The requirement is for a unit with a design speed of 3000 rpm, rated at 10 Kw approx, and that can be back driven as a motor. It is intended to attach it to a prototype turbine driven by an oscillating water column . Any suggestions for a supplier or manufacturer would be welcome.

Gabriel.
 02 November 2007 10:08 PM
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bruerel

Posts: 1
Joined: 02 November 2007

Hello,

I'm looking for something similar, but at lower speed (300RPM), if you have any response could you let me know?

I know two manufacturers:
1) Link removed/bin/e_eoliennes.html
2) Link removed/index.htm chinese manufacturer...

I never ordered, I'm willing to do so soon to make my small watermill run (see engomer.com).

Best Regards
Loic
 14 June 2010 07:33 AM
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motorzhao

Posts: 1
Joined: 14 June 2010

Hi Alan

Please visit: Link removed

You will get more information of small permanent magnet alternator.
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