Monday, December 22, 2008


Small Homemade DIY personal wind turbines

modified permanent magnet alternator mount with furling yaw tail
view of PM alternator geared 1:1 could easily be made a 2:1 for unmodified regular GM 10SI alternator.
Chevy 1 wire alternator needs to be geared up to work in original condition.

Allstar | 80500 | GM Alternator 63 Amp 1 Wire

Found that pulley mounted blade wind turbine. No pictures just a youtube vid. I like this set up for high RPM PMDC motors and AC alternators minus the lack of a auto furl.

Stereo typical direct drive PMDC set up. No furling on the tail here.
Geared Alternator setup.
African windturbine made from bike parts not sure of the generator?
Interesting design using motorcycle magneto and bike frame.
car disc axial Flux design
Vibration isolating house mount.
Rear blade commercial design furling integral to generator.
Parts for Axial Flux head
Exploded view of Axial Flux generator.
Direct mount PMDC alternator
Another view of magneto bicycle turbine.
My favorite DIY blade design.Looks like Bakelite but 4" PVC pipe should work as well with IR protection.
House mount not recommended due to turbulace and vibration. Only good for micro and small.
Tail Furl schematic.
Armature blade mount example.
Axial Flux Head.
Immersed heating coil load dump. Looks like water heater elements?
Pole tilt furl design.
Diode required for PMDC so batteries don't start driving motor.
Heating coils load dump.
Recommended PMDC motors tha thave low RPM's very hard t ofind. These wouldn't require gearing and the bearings and sturdy mounted both ends.
Roof Mounting schematic.

Break down of comparative alternatives. Determination that the Hugh Piggott Axial Flux design is by far the most cost efficient, durable, and cost effective.

There was another example of a geared turbine where the blades were mounted to a 10" large pulley that was connected to a drive shaft that was anchored to two pillow blocks.
The PMDC or alternator was slung in the front below the pulley. Not sure about blade flex hitting generator but the blades were only 2 feet in length 1 foot of which was attached to the large pulley so I should have been ok. I'll try and find that pic again because the generator would have worked as the weight for the pole furl design.

I've been doing some research on building my own small micro wind turbine lately and I thought I would put some of it on here.

First of all I have yet to build one.

It would seem from all of my research that the revolutions of a direct drive turbine would be somewhere in the range of 500 rpm to 1000 rpm. 60 seconds in a minute 10 revolutions per second 600 revolutions.

The smaller the blades the higher the RPM. 4 foot diam 1000 rpm, 6 foot diam 600 rpm as an example in no way indicative of real or actual results too many factors to account for like torque wind bearings etc etc.

On bearings they would seem to be one of the big factors for longevity for the Permanent Magnet Direct Current motors and Alternators or Alternators conversions.

The beauty of using the Chevy 1 wire alternator either stock and geared up or modified to PMDC direct is the ease of accessing spare parts like bearings because it would seem that 5 years is the time frame for maintenance.

Then again the strength of building your own Axial Flux turbine along the lines of the Hugh Piggott design is the strength and durability of the bearings used as well as the ease and availability of the parts required to build it as well as service it.

Another thing to keep in mind for your design so to include some form of furling mechanism preferably automatic to protect your investment from self destructing or burnout.

From all of my research I have only found two low cost methods tail furl and post furl. See diagrams.

Anyway I'm not going to get too in depth here as I really don't know what I'm talking about having never built one so I will put many links and images as possible up here for you to decide and investigate further.

NL Hydro should really consider allowing people to use grid tie ins. Because if they don't people could easily go off grid and then they would lose out on all of their customer base. Wher as if they incorporate grid tie in people will augment their grid system if done correctly by reducing peak demand which is the real achillies heel of the grid. Anyway there are a lot more reasons to allow grid tie in than there are to not. The only one that I can think of to not allow grid tie in if done properly is to hold onto your monopoly and freeze out any and all competition.

Small wind turbines would be a perfect fit for rural economies of scale. It would allow the ingenuity and entrepreneurial spirit to thrive in rural NL. It would provide energy for the more populace urban areas. reduce GHG mitigate peak demand convert our economy from non renewable to renewable etc etc.

Insulation can only take you so far before the law of diminishing returns kicks in.

These would be great for rural communities on diesel generated electric, cost effective wise.

The entire population who live in and around the Holyrood diesel fired electric generating plant who complain about the pollution, allergies, and particulate should have one of these to do their part in causing the holyrood plant to burn less.

It comes down to personal foot print, and pro rating like is done in some jurisdictions more to offset peak demand than anything to do with economics or going green.

Same could be said for a carbon tax it should only be as much or as little as will make alternative energy sources competitive.

Any funding from a carbon tax should never be long term because if it actually works it should be lost right. What do you do then where does the taxation come from then?

Some links
labrador coastal equipment limited wind
Canadian Wind Energy Atlas
North Atlantic Energy Structures
Wind Power kids CanWEA: SmallWind: Small Wind Turbines
/dev/thekevdog - My Homemade Wind Generator
Ametek motor
Alternator and Generator Comparison for Wind Power
'Weak' grid holding back wind energy: report
Rooftop Turbines: Roof-Top Mounting and Building Integration of Wind Turbines
Wind Turbine from Scrap for under £20: Student Hopes to Power the World's Poor : TreeHugger
Student builds a £20 wind turbine for the developing World | Geeky Gadgets The Wind Farmers Network Home Page
Randy's Workshop Wind Genny Page
TLG Wind Power Products Ametek DC PM Motor Data.
Hugh Piggott - Scoraig Wind Electric
Forcefield - Otherpower - Wondermagnet Online Store
Generating Electricity With Stepper Motors
Blade Pitch or Furl : Wind Turbine Overspeed Protection
Use a Cycle Computer to Measure Turbine RPM - Wind
DIY 2kW Wind Turbine - Wind
It's Not Easy Being Green :: View topic - Home built from scrap 2kw wind turbine
Dan Lenox's Wind Turbine Build - Electrical blade design software
the Discussion Board || Matching the alternator to the blades
New 17 foot Wind Turbine 20' diameter wind turbine
The Bottom Line About Wind Turbines
10' diameter wind turbine construction Energy Alternatives - Alternative Energy sources, alternate energy, solar panel, photovoltaics, wind mills, solar cells, SQFlex, Grundfos, water pumping, independent energy, alternative energy companies, solar home power, solar wind, solar products, solar power panels, alternative energy companies, photovoltaic cells, wind power, wind generator, wind energy, alternate energy, wind turbine, wind power generators, windmills, water power, power inverter, renewable energy resources, trace engineering, Xantrex, Grundfos kyocera, unisolar, outback power, sharp, morningstar
Alternator Conversions How to Convert an Alternator Into a Motor
Poor Man's Guides - homemade windmills and more DC Motor Analyzer Homemade DIY Wind Turbine Generator
WindBlue Power - The best wind generator parts and PMA Permanent Magnet Alternators on the web Small Turbines Not Left Out of Wind Boom
Prairie Turbines presents: Breezy 5.5 A Reliable 5500 Watt Homebuilt Wind Turbine Generator DIY 1000 watt wind turbine
Build a homemade wind turbine.....Mk II.
William Kamkwamba on building a windmill | Video on Wind power generator and alternative energy - small scale homemade turbines
Building a homemade wind turbine using my homemade cnc router.
Permanent Magnet Motors for Small Wind Turbines DC Wind Turbine Motors on eBay - BEWARE

H/T; for exploded view image


Thank you for using an image from our web site under "Exploded view of Axial Flux generator". Could I asked you to add a source reference, and/or a link back to the site TIA.
Thank you for using an image from our web site under "Exploded view of Axial Flux generator". Could I asked you to add a source reference, and/or a link back to the site TIA.
has the best low rpm generators
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