Grid-tie inverters have become egalitarian today. You no longer need thousands of dollars or a licensed electrician to take advantage of the newest generation of micro grid-tie inverters. These devices let you hook your small wind turbine or solar panel to the grid for around $250-$350 US. In our latest Youtube Video, my colleague Paul Gelling puts one of these inverters through the wringer.

Click here to view the video: Youtube Video

Old Information can be Good Information


If you are interested in making wind turbine towers from schedule 40 or schedule 80 pipe and fittings, some very good information can be found using a very old source: a 1958 copy of Popular Science which I was reading from Google Books:

Brown, S. (1958), "Machined Pipe and Fittings", Popular Mechanics, May 1, pp.197-200.

Its amazing that you can find so many old magazines on Google Books which still have relevancy today. Even using a CNC machine rather than a lathe, many of the ideas in this article are still transferable. I am interested in making a telescoping wind turbine mount inexpensively and found the discussion on telescopic uses of pipe very interesting.

Equally amazing is how much material was in a monthly magazine back in the day. Go buy a Popular Mechanics today and compare it in quality and quantity to the 1958 vintage equivalent. I bought one in an airport and had finished everything of value before the plane reached altitude. Same goes for most other magazines like Popular Science that are but a shadow of their former selves. They mostly help you buy things now rather than make things.

55 Gallon Drum Turbine Instructable

I wrote an Instructable. I have been a fan of Faroun, a prolific VAWT inventor who has been writing Instructables for years, and now I have finally written my own instructable:

55 Gallon Drum Vertical Axis Wind Turbine (VAWT)

Please let me know what you think. It is a lot easier to read if you actually to to the Instructables site to view it.

New Airfoil-Based Wind Turbine




This is a preview of our new turbine. This turbine is still under development but is performing very well in initial tests.

This turbine is much lighter and faster than previous turbines I've built. For one, it is a lift based turbine utilizing symmetrical airfoils rather than a drag based turbine such as the Savonius. This has both advantages and disadvantages. This turbine really goes, but the Savonius starts up easier in super light winds.

I would like to thank the following companies who produced custom products or provided services which were integrated into this turbine prototype.

Liberty Machine and Tool - http://www.libertymachine.net/

SENSYR - http://sensyr.com

FC Sails - http://www.fcsails.com/

Thermal Foams, Inc. = http://www.thermalfoams.com/

Otherpower.com - http://otherpower.com

Here is a YouTube video of this prototype turbine.

Gear-Wheel Designer Vastly Improved

When I wanted to couple my prototype Savonius wind turbine to an off-the-shelf alternator, I decided to use gears. I cut the gears on my IMService CNC machine using an inexpensive piece of software from Delph Electronics called the Gear-Wheel Designer

Graham Baxter's Gear-Wheel Designer with G-code generator lets you type in a few parameters, press a button, and get a DXF file of a gear, along with G-code to run a CNC machine. This program allowed me to make gears to electrify my wind turbine without being an expert on gear cutting. Click here to see a video of the wind turbine in action.

The user interface of the Gear-Wheel Designer is quite simple and contains a parameter area and a graphical preview of the gear to be rendered:

Here is a picture of a gear produced from the software.

The latest release has the ability to create five gear types as opposed to just cycloidal and involute gears in the previous release. The new release added the capability to design ratchet wheels, dead-beat ratchet wheels and anchor ratchet wheels. See this page for more detail on the new gear/wheel types. Also added was the ability to create wheels with spokes as shown above. There are also a number of other new features as this release was a complete rewrite of the software. They let you download the user manual prior to purchase so I advise doing this to find out more details about the software prior to purchase. This software does not attempt to teach you terminology or gear design concepts so if you are like me and don't know much about gears, you should do some research prior to machining your gears.

This software is definitely a bargain at less than $80 to purchase. I just upgraded to the latest version and will be trying it out on my next generation vertical wind turbine. I am also going to try my hand at machining a pendulum clock. Watch this blog for future updates if interested in gears.

VAWT Video Part 2 - Power Generation.


VAWT Part 2 -- Gears and Generator


Please check out the following link to a YouTube Video of part two of our wind turbine build. Video - Part 2 This shows our geared generator design and a desktop CNC machine cutting gears.

Two other designs are being worked on for future:

1. Geared design shown in this video.

2. A version with a built in rotating cylinder of permanent magnets exciting a stationary coil (permanent magnet alternator) with no mechanical gearing and hence no mechanical loss as is inherent with gears.

3. Another type with a geared automotive generator (no magnets at all) whose mechanical resistance is controlled with PWM(Pulse Width Modulation) by a microcontroller controlling power into the rotating coil. With no power, the coil should free-wheel with minimal resistance. In strong winds, we could "make hay while the sun shines" by putting a lot of juice into the coil. In light winds, the power in the coils is reduced to an amount which still will at least hopefully trickle charge the battery. A small permanent magnet motor-generator would be used to jump start the process and handle the case of a totally dead battery, and could "trickle charge" a dead battery. This design is very interesting from a software point of view, but has the highest amount of technical risk.

The wind speed, RPM, and outputs will be monitored, and more importantly compared, with a flexible sensing and visual programming environment called NeatTools, which will be discussed and "filmed" in future posts. We will also be using a TNG-3B from http://www.sensyr.com in conjunction with NeatTools to simultaneously monitor multiple inputs from hall effect sensors (from a small magnet on each turbine axle), voltage sensors, and a wind speed sensor.

CNC part 1-Unboxing and Connecting


I received a CNC machine last month and opened it up. Here is video of the initial checkout of the machine.


http://www.youtube.com/watch?v=duunwn_yfW8

Since this was posted I have used the machine for many other projects including making gears for my wind turbine and machining plastic front panels for local companies.


I did a lot of research before buying this machine from IMService ( http://www.imsrv.com/ ) and I think I made a good decision as it is making us more productive. The owner of the company, Fred Smith, provides excellent support. Here is a link to the actual 12 x 24 inch machine I bought:

http://www.cadcamcadcam.com/index.asp?PageAction=VIEWPROD&ProdID=208


Soon I am going to try to make printed circuits on the machine using special micro end mills.

Here is the YouTube Video of the unboxing: YouTube Video

Wind Power, CNC, and More

Welcome to my blog. Here I will keep you abreast of new developments at the Berezin house. Currently, we are developing an inexpensive "build it yourself" VAWT (vertical axis wind turbine). After checking locally for a wind turbine and finding entry level prices in the $3,000 to $5,000 range, I decided to build a plastic barrel VAWT. Last week we bought a CNC machine to fabricate parts for our VAWT. I will be publishing videos of our progress on these projects.

introThe FAWT Silo. ( vawt wind turbine hawt savonius )The FAWT Silo is one of my ideas to improve the efficiency of VAWT.we know that the best VAWT can only be 45% vs The HAWT in efficiency.well The FAWT is a VAWT but it uses lift like the HAWT to create the rotation spin.the idea is simple, I took...
By: faroun

55 Gallon Drum Vertical Axis Wind Turbine (VAWT)

This Instructable will enable you to build a Vertical Axis Wind Turbine out of mostly recycled materials.I was inspired to build a Savonius turbine from 55 gallon drums after reading an article from a 1970s copy of Mother Earth News. The Savonius Turbine, often referred to as the S-Rotor, has been ...
By: embeddedprogrammer

A Paper Plate and Pop Bottle Savonius Wind Turbine

Build a vertical axis windmill from cardboard and recycled pop bottles to experiment with wind power generation.Small wind turbines have lower energy output than commercial wind turbines, such as those found in wind farms. Commercial generators in the 5-50W range are available for boat or caravan us...
By: egbertfitzwilly

How to build a car powered by a savonius/wind turbine

Hello! I have seen an interesting experimental car on German TV. It is a small car, in which a wind driven helix directly trasmits the mechanic energy to the wheels. The car moves, even against wind direction. That car was equipped with a tall helix perpendicular to the main axis. I think that a s...
By: isacco

How to test the power output on a wind turbine?

I'm on a team prototyping a water filtration system powered by a Savonius wind turbine; the energy from the spinning turbine is mechanically transferred to a reverse osmosis filter/pump setup. We're doing tests of various blade configurations and are trying to determine the power output by hooking ...
By: moisture

V8-4" vawt,savonius,vertical axis,wind turbine,ametek)

http://www.vawt.tk Guys Don't Get sick Of me, But After making the V8-3" I realized that the Vanes are not able to hold onto all the wind that comes near it, that was due to when i expanded the middel section it flattened the vanes in the middel, so i designed the V8-4" in a way that when i expand i...
By: faroun

V8 vawt,savonius,vertical axis,windturbine,ametek)

http://www.vawt.tk After making the V10 I realized that off the shelf, cheap dc Motor requires alot of RPM, I do not want to gear something made of so light material that it does not have the mass to sustain the rotation, so I decided to design and build one that has more RPM yet has the same Blade ...
By: faroun

V10 (vawt,savonius,vertical axis,windturbine,ametek)

http://www.vawt.tk Here we go again, building another vawt.With this one I am hoping to get the 100 watts.Here is how I did it.First we need:--5 pvc tube. size 3"X10' (hardware store)$48--3 bike wheels. size 12" (junk yard or ask your kid to use their bikes for a minute) maybe $5--Ametek38 volt (eba...
By: faroun

Build your own Savonius VAWT (Vertical Axis Wind Turbine)

Build a cheap VAWT from a broomstick, 4 bearings, 2 buckets and some pipe. Get some 25mm ID / 50mm OD bearings Go get at least 2, or ideally 4 ball bearings with a 25mm (1inch) inner diameter, and a 50mm (2 inch) outer diameter. I bought mine for aout 6 Australian Dollars each at my local bearing...
By: sam dekok

Faroun Lenz v2 Vertical Axis Wind Turbine

http://www.vawt.tk keep in mind that this one is easier to build than my Savonius.i kept it very basic.to build the turbine, you need the following material:-3 bicycle 29" wheels $5.00-12 lamminate flooring $20.00 ( .25"x8"x4'.4") -Various sizes of screws $7.00-3" PVC cut in 2 $50.00 or (cardboard ...
By: faroun

Wind Powered Yard Light

I live in a pretty windy area and decided this might be a fun little project to throw together. It's pretty simple to do, and could easily be improved to make it more permanent and efficient. It would also make a good school project if you have appropriately aged school children. Prepare the old...
By: yokozuna

Soup Can Savonius

Here’s my first venture into writing an instructable. I’m not creating much new here, just giving people a cheap first step into making Savonius styled wind turbines and trying out some new ideas. Most of the materials can be found right in your own garage if yours is as filled with junk like mine...
By: gumbytig

Cardboard Savonius Wind Turbine

Goal: build a Savonius wind turbine made out of cardboard to see whatworks. This is for the turbine only and not the generator itself. The main photo you see is the goal.The need for a working model grew out of frustration trying tojury-rig various designs of a Savonius turbine that in the end wou...
By: rhackenb

Faroun Savonius Wind Turbine

http://www.vawt.tk Alternative energy is a must in the future and all of us would like to challange the idea that we can not change and be efficeint.so i am taking that chllange to create my own style of Savonius wind generator.in this Instructable i will include the steps that will achieve my Farou...
By: faroun

Filed under: Gadgets and Tech, Alternative Energy

100KW Blue Sky turbine, Photo: Planetturbine.com

Over the last few years, wind and solar proponents have been battling it out to take the top spot in the clean energy discussion. However, when it comes down making a purchase on a smaller scale, solar is king. Solar panels are smaller, more discreet and, most importantly, they're a proven commodity.

Still, that doesn't mean they're always the best option. According to Earth2Tech, the "small" wind turbine market is expected to double by 2013. By the way, I put "small" in quotes because were talking small in terms of output (100KW or less), not size. Look at the 100KW turbine in the picture and you'll see what I'm talking about.

A small wind system might not be as suitable as solar panels for your condo, but it might be better for you condo complex. Likewise, small wind's not ideal for your house in the burbs, but it might out-compete solar at your warehouse, or your farm, or whatever. Says David Link from Pike Research: "Small wind energy is less expensive than solar on a cost per watt basis which is driving more and more businesses and rural consumers to give it a second look."

Continue reading Do 'Small' Wind Turbines Make Good Christmas Gifts?

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Eco-Beat, 12/7

Which is more carbon friendly: An artificial Christmas tree or a freshly-chopped farm tree? Need some eco-gadget gift ideas? Shouldn't Copenhagen delegates be driving Honda P-NUTs, not private jets and gas-hogging limos? Today's Eco-Beat has the scoop on all the latest green news and tips.

The Tree Debate: Real vs. Fake Here it is, the classic Christmas tree debate broken down by the numbers. It's a must read for anyone who's ever come face-to-face the Christmas conundrum. The verdict may surprise you. The winner in my book: Potted trees that can be planted after the holidays.

Green Gadget Gifts Is someone on your list pining for a new geeky toy? Techno gadgets are highly sought after and seldom eco-friendly. Check out Inhabitat's gadget guide to find the smart phones, e-readers, and other gizmos that will bring a smile to any eco-geek's face.

Private Jetting to Copenhagen Are Hopenhagen delegates as dim-witted as the Big 3 auto execs who flew private jets to Washington to ask for a bailout? Limos are being driven in from Germany and Sweden to accommodate the COP15 bigwigs. Over 140 private jets are expected/five electric cars.

Would You Ride in a P-NUT? Honda unveiled a tiny, 3-seater concept car at the LA Auto Show last week, and it's turning a lot of heads. It's called the P-NUT (Personal-Neo Urban Transport) and it's equipped for three powertrains: a gas-sipper, a gas-electric hybrid, or an electric motor.

Jet Setting vs. Stay Putting So, you've decided to curb your air travel for the environment, but you're missing all the experiences and stories that you had during your globetrotter days. What then? Can staycation stories ever compete with your friends' tales of distant lands. Grist has some answers.

Green in a Flash:

• Good news, the Kit Kat bar has gone Fair Trade.
• Wind turbines have no significant impact on property values.
• The UN is anti anything that resembles a Christmas tree, though evergreens are a major part of most carbon storage schemes.

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Wind Turbine in Wakasu Marine Park

Savonius wind turbine in front of UDX, Akihabara

Savonius Wind Turbine

SAVONIUS WIND TURBINE

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

Savonius Wind Turbine

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