This page is designed to help those who plan to build theirown wind turbine. I hope you find it useful. Some of it is gettinga bit dated - especially the stuff about brakedrums.I am teaching workshopcourses in wind generator construction, here in Scotlandand also in the USA and Wales. See my coursespages for many stories and pictures of homebrew windpower.Details of how to buy my bookson home built wind turbines
I am going to use some rough scans of a few tables from mybookWindpowerWorkshop chapter 1, which will help you with the overalldesign of your wind machine. I am using scans because theoriginalfiles went in the sea with my computer back in '97.
The first table tells you how much poweryou can expect from a wind machine, when you know how big it is,and how strong the wind is.Readers in the USA should note that one metre diameter is about 3 feet,and 3 metres is ten feet.
Wind turbines are usually designed to work best in the range 3 -12m/s,but windspeeds as high as 12m/s are not common (everyday) occurrences,so don't expect to get such high power outputs often enough to bereliedon. It is usually a good idea to avoid very high power (highwind)operation altogether, unless you plan to use the machine for heatingpurposeson rare occasions. To avoid damage in high winds, you will need agood control system which reliably protects the machine from the wind'sfury.
In terms of what you can run from thewindsystem, the average power is more useful information. From thisaverageyou can then work out how many Amphours of battery charge per averagedayyou might get.
Following through our example of the 2 metre (six foot is 1.8m)diametermachine, and choosing a tip speed ratio around 6 we find that themachinewill run at about 600rpm. This leads to the biggest problem inhome-builtwindpower. You will not find an alternator or generator whichwillgive your required power (250 watts) while running at that speed. Soyouwill either have to use gearing to change the speed, or build or adapta special machine. The second option is the better of the two.
Book DescriptionHave you ever wondered how wind turbines work and why they look like they do? Are youinterested in adding wind power to your off-grid electric system, but have been put off by the highcost of equipment and installation? Well, now you can build and install your own wind turbine!Harnessing the wind can be a tricky business, but in this groundbreaking book the authors providestep-by-step, illustrated instructions for building a wind generator in a home workshop. Even ifyou don't plan on building your own turbine, this book is packed with valuable information foranyone considering wind energy. It covers the basic physics of how the energy in moving air isturned into electricity, and most importantly, will give you a realistic idea of what wind energycan do for you--and what it can't.
It's a very useful reference, and we are pleased to be able to make it available for free. The file size is large for some users, 4.8 meg. If you can't download it over your connection, it's available in printed and bound form at low cost HERE.
If you are interested in a wind turbine installation for your house, this is probably the best $20 you can spend.Ian is a very long time wind expert -- he does wind workshops from his wind powered home in the San Juan's, and has been the wind expert/editor/author for Home Power for many years. The book covers the whole process of investigating whether wind is workable for you, how to find the right wind turbine and tower, and all the rest. The best getting started reference you will find. Small Wind Electric System -- U.S. Consumer's Guide,Wind & Hydropower Technologies Program,EEREwww.eere.energy.gov ,,,
How to get articles from Home Power ... Home Power Magazine issue 110, Dec/Jan 2006. A introduction to the various types wind powered electric generating systems and the components that make them up. Wind Turbine Buyer's Guide, Mick Sagrillo, Ian WoofendenHow to get articles from Home Power ... Home Power magazine article, issue 143, June/July 2011. A very good article from two recognized wind power experts that provides some good and realistic advice for people thinking about a wind turbine . Covers all the basics, and provides a rundown on wind turbine models available in the US/Canada. If you are serious about wanting to install a wind turbine that will generate the amount of energy you expect, and will not be a nightmare to maintain, this article is a must. The other critical item that is not covered in detail is making sure your site has sufficient wind to make a wind turbine work -- this is covered in articles below. Wind Power -- Renewable Energy for Home, Farm, and BusinessPaul Gipe's web site:www.wind-works.org
Wind Power, 2004 edition, Paul Gipe An excellent, all around, in depth book on wind power. Paul Gipe's website has a lot of good articles and reference material. Got Wind? -- How to use the Wind Resource Atlas of the United States Another US set of wind maps: www.eere.energy.gov and, another: www.eere.energy.gov... (has some more detailed maps for NW)
How to get articles from Home Power .... HomePower Magazine article, issues 40 and 41The most important factor in determining if you can successfully use wind power is how much wind you have. This is not an easy thing to determine -- this article tells you how. Scoraig Wind -- Hugh Piggott's Homepage Hugh Piggott's excellent web site on building wind generators. Plans and design information on building a wind generators from scratch. Plans, books, workshops, ....The "Windpower Workshop" book gets very good reviews from people who want to build their own (as do his actual workshops). Anatomy of A Wind Turbine, Ian Woofenden, Hugh Piggott, How to get articles from Home Power ... Home Power Magazine article, issue 116 A good basics article explaining the internals of a wind turbine. Good to understand whether you want to build one or buy one. The American Wind Energy Association A good reference website for wind power. Some valuable materials for people interested in small wind systems.Lots of good material. Apples and Oranges 2002 -- Choosing a Home-Sized Wind Generator Mike SagrilloHow to get articles from Home Power ... Home Power magazine article, issue 90Some good advice on choosing a home size wind generator from the guru. Lots of comparison specifications for numerous commercial wind generator offerings. Tower Economics 101, 102 and 103Mick Sagrillo
A site intended for students wanting to learn about wind power, but lots of good materials anyone interested in wind power -- including lots of hands on building projects. Ontario Landowner's Guide to Wind Energy" (free download)Paul Gipe and Jame Murphy
Several options for measuring and logging wind speed and direction. Some are kits.Some of the solutions require a PC to be on at all times to log data, so you would want to have a very low power use PC. Piclog - PicAxe based Wind Loggerwww.thebackshed.com/Windmill/PicLog.asp
DIY windmeter to measure and record wind speeds. The experts recommend measuring wind speed at your site for a year before investing in a wind turbine. Here is one way to do it.Another option is to install of the small wind turbines (like a Air X) and use it to see how much power a larger wind turbine would generate. DIY Windmill Plans and Information Scoraig Wind -- Hugh Piggott's Homepage Hugh Piggott's excellent web site on building wind generators. Plans and design information on building a wind generators from scratch. Plans, books, workshops, ....The "Windpower Workshop" book gets very good reviews from people who want to build their own (as do his actual workshops). OtherPower.com _wind.html
The turbine is said to produce about 3 KW at 12 mph wind speed. And, that it can be built for about $4000. The Wood 103 -- A wooden 100 Watt Wind GeneratorHow to get articles from Home Power ... Home Power Magazine article, issue 88Being a woodworker, I really liked this article. It looks like a good way for one with woodworking skills to experiment with wind power generation. Wind Generator from Fisher Paykel Washing Machine www.yourgreendream.com/diy_instructions.php
A new vertical axis design that is targeted for urban locations. Raum Energy Raum Energy is a Canadian company that makes 1.5 KW and a 3.5 KW wind turbines.Said to emphasize reliability and ease of installation. Southwest Windpower www.windenergy.com
A well know supplier of small wind turbines ranging up to 15 ft rotor diameter. Skystream 3.7 Wind Turbine from Southwest Windpowerwww.windenergy.com/products/skystream This is kind of the opposite of Do-It-Yourself, but I thought it was interesting. The Skystream is a 12 ft diameter turbine that is designed for grid connected residential use. It comes as a package that includes all the electronics and grid tie inverter. Kind of a plug-and-play wind turbine. It claims to be designed to fit into residential areas -- low noise, street lamp type tower, ... About $15,000 plus installation. It is said to produce 400 KWH per month in winds averaging 12.3 mph. Some problems have been reported with low power output, so make sure this has been sorted out, and that you understand roughly how much power will be produced in your particular installation. XZERES Wind XZERES makes a 12 ft model 110 and a 24 ft diameter model 442SR horizontal axis wind turbines. New Designs Water Pumping Windmills There is a section on water pumping windmills here... Lots of information on functional and beautiful water pumping windmills.
Small wind turbines, also known as micro wind turbines, generate electricity for small-scale use. These turbines are typically smaller than those found in wind farms. Small wind turbines often have passive yaw systems as opposed to active ones. They use a direct drive generator and use a tail fin to point into the wind, whereas larger turbines have geared powertrains that are actively pointed into the wind. 2b1af7f3a8