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Forum Index : Windmills : Windmill Alternator Nice +SS shaft
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| kingull Regular Member  Joined: 08/04/2010 Location: AustraliaPosts: 44 |
A range of alternators and controllers to suit wind generators including 3 phase and dump controllers. http://www.windbluepower.com/category_s/1.htm |
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Perry Senior Member  Joined: 19/11/2009 Location: Posts: 190 |
Windblue alternators are usually considered junk by people that understand small wind turbines. The company is uh, 'liberal' with their performance claims to say the least. Do a search on this site as well as the Otherpower site for windblue before shelling out any money for these. THey are best for selling to ebay buyers that think they can power their house with one. Perry |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
Ok so what is better and worth buying? I am looking for a high RPM unit around 5000 RPM that puts out 3 phase via a rectifier to a GTI where it is 48 volts DC out or around 400 Volts DC to suit a Sunny BOY GTI. Application is Micro Hydro High head preferred limit to 1000 watts out continuous. A diversion dump controller is also necessary, apparently? I can get a welded stainless steel Turgo rated to 6000 RPM. I know Pelton is better but nothing seems to exist. |
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| Perry Senior Member Joined: 19/11/2009 Location: Posts: 190 |
Ahh, didn't realize this is for hydro since it is posted in the wind section. If you truly can spin it that fast than their hi-wind model could hit 1 kW max output. Not sure how long the windings will last running at max amps though. I guess you'll have to email them and see if it will do it. The perf curves on their site kinda spell it all out though. Perry |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
Unfortunately the high head spins the runners fast so I have to find a PMA that does the job. Has to be 3 phase for 120 metre cable route to GTI. Am heeding your advice and emailing a different PMA supplier. http://www.hydrogenappliances.com/email.html |
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| Perry Senior Member Joined: 19/11/2009 Location: Posts: 190 |
Wish I had a link I could shoot out to you but I don't. Hydrogen appliances offer the same thing, converted car alternators. I'm just not a fan of them because they are junk for wind. Like I said, different world than hydro. Email windblue as well and let them make their pitch. At least you will have a couple of data points to consider then. Perry  |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
Ok so maybe I have to use ecoinnovations GE model and trim down head pressure. But not keen on their 380 volt DC link as our cows will wreck anything that exists even if you surround it with barb wire. Catenerary seems the only way to beat them. A local grid power failure was caused by a cow rubbing itself on the power pole and the aerial lines danced around and shorted. Anyone got A Fisher Paykell 3 phase unit? |
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Downwind Guru  Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
[quote]Anyone got A Fisher Paykell 3 phase unit? [/quote] Thay all are! unless you stuff the rewire up. Even a standard unmodified F&P is 3 phase. Pete. Sometimes it just works |
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| VK4AYQ Guru Joined: 02/12/2009 Location: AustraliaPosts: 2539 |
Hi Kingull All the F&P motors are three phase so no problem there However they are speed sensitive and seem to loose power over 700 rpm. Why not use a normal small three phase alternator of 5 kva or so then if you want to use as a grid feed a bit of electronic wizardry will synchronize with the mains and then over drive it to feed into the mains no expensive inverter required, use a multi jet head on the pelton wheel hooked to a governor to switch jets in and out for loading. A speed reduction unit will be more efficient for the alternator as the reduction is less. Use a reverse current drop out if the water of alternator fail. Put an electric fence around all the bits to keep cows away and you are in business. All the best Bob Foolin Around |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
You dont know our cows, they test the electric fence and often get through it. The fence is around 5 K long and it puts out 6.5 KV anywhere. I have reverted to adding barb wire so now it is 3 wire. 2 hot and one cold. I intend to multi jet the HG and use a welded SS Turgo but cant find any alterators. I am currently reading details on this unit: http://www.windstreampower.com/443902_PMDCG.php. I would rather pay for quality if it exists. Been searching for days and should have come here first. Maybe I should use my Mitsubishi 50 KVA unit and sell the diesel engine! Grin! |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
Hmmm! food for thought. I have a sea wasp 6KVA pure sine wave diesel genset. |
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SSW_squall Senior Member Joined: 20/03/2010 Location: AustraliaPosts: 111 |
I agree with VK4AYQ, you could use a 2 pole induction motor which has it's synchronous speed of 3000RPM, and run abit faster than it's synchronous speed to push power back into the grid. I think Oztules was experimenting with the power from his chainsaw blade mill'. By Using a DC motor to drive the induction motor... Have you checked out platypuspower?? I think they do custom fabrication of hydro turbine, especially ones that fall into the small(kW's) rather than micro(W's) catagory. AB Einstein: Everything should be made as simple as possible, but not one bit simpler |
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| VK4AYQ Guru Joined: 02/12/2009 Location: AustraliaPosts: 2539 |
Hi Kingull I have seen one that used a 36 inch pelton wheel and powered a 100kva alternator with heaps of excess power it had a series of jets but run on two or three depending on the load. He made the pelton wheel himself out of a piece of 1 inch plate and got the cups cast in steel at the local foundry. I think it ran at 4500 rpm with 3 to one onto the alternator. It was very noisy with cover off. All the best Bob Foolin Around |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
Hey AB! What a good idea! Push a motor above sync. I have a 3 phase 415 volt 3 HP 2 pole. Might shove a cap accross two phases and try it. not sure if it is star or delta but it has 3 terminals and not six. Platypus never answers email. I tried a couple of times. Also looking at a stepper motor rated at around 6 foot pounds. Its on Ebay AU. Frank. |
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GWatPE Senior Member Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
Hi Frank, Pacific Scientific make a range of PM Motors that are suited for high RPM as a PMA. If you intend transmitting the power long distances, then DC is more efficient use of the same wire. 3phase AC is used by the utilities as transformation is easier. I have noticed from reading links to data that you supplied that loaded Turgo wheels spin at close to half half unloaded RPM. Have you considered what happens if the GTI "sunnyboy" loses grid connection? If you are operating your turnine at 6000RPM, then this becomes 12000RPM when the grid connection is interrupted. Without a rapid control interlock, the GTI is toast. Not covered by warranty. In actual fact the unloaded emf could be as high as 3-4x the loaded emf, to account for turbine, and alternator inefficiencies. micro hydro is like a windmill, in that you will need a diversion load, of at least the same maximum power rating as the GTI, for instsnces where the grid connection is lost. Gordon. PS: edit Maybe this thread should be somewhere else, as it is not about windmills. :( become more energy aware |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
Hehe! GW at PE. It started out the right way then went into orbit. Am very much aware of "Load Dumping" Have a great Turgo wheel supplier and advisor. joe@h-hydro.com |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
Hey Guys, thanks to you I just grabbed this from Ebay and it is from nearby in Queensland: and $120-00 AU delivered. Permanent Magnet DC Electric Motor New Never Used Pacific Scientific the most specified original equipment permanent magnet DC motors Rugged, quality construction. Dependable operation. A well deserved reputation for value. PWM rated, low voltage, wash down duty and explosion proof model 2.3 HP, 3850 rpm, Volts 160DC, 13.2 Amps, low noise level and heavy duty. |
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| Perry Senior Member Joined: 19/11/2009 Location: Posts: 190 |
Do you want to run it at 400 Volts or 48 volts as per your original post? Understand if you are still deciding. - if you try to run it at 400 volts you don't have the rpm/voltage - if you want to run it at 48 volts the coils are rated at 13 amps so you are looking at about 640 watts at the gen before your DC line losses. So probably around 400 watts into the inverter. Totally guessing on the line losses there. Perry |
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| kingull Regular Member Joined: 08/04/2010 Location: AustraliaPosts: 44 |
Hi Perry, That sounds right on target. I will test it with a Prototype motor from my old Employer Crompton Parkinson. Drive it and see what comes out. I might just install a power point near the Hydrogen spot and pop all the gear right there. After the tests, I can then decide on the load dumper and the GTI. Had a bit of luck recently. Got a nice Avo Mark 8 plus a full set of shunts and C\TS to 400 amps. |
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| Perry Senior Member Joined: 19/11/2009 Location: Posts: 190 |
No idea what that means :) |
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