Joe Levi:
a cross-discipline, multi-dimensional problem solver who thinks outside the box – but within reality™

Backyard Wind Turbine, Part 5: Building and Installing the Wind Turbine (2 of 5)

Project Table of Contents

  1. What kind of energy should I harvest?
  2. City ordinance and neighborhood considerations
  3. Installing the tower base
  4. Building and securing the tower
  5. Building and installing the wind turbine
    • Selecting the type of turbine 
    • Choosing AC or DC (this article)
    • Prototype, aka “Mark 1”
    • Building the “Mark 2”
    • Video of the finished Mark 2 in action
  6. Wiring up the electrical connections
    • Wiring
    • Preventing “reverse flow”
    • Regulating and controlling the charge
    • Batteries
    • Dump Loads
  7. Afterward…

AC or DC, Which to Choose?

As far as efficiencies go, you’ll want to stick to 3-phase alternating current. This lets you have a relatively far run from your head (the turbine itself), down the pole, through your conduit, and into your shed/box/garage/basement (wherever you’ll have your batteries and inverter). If you’re building your own you can rebuild an alternator or make your own stator. This is by far the more geeky way to go. WindBluePower and WindStuffNow are your stopping points on how to build this kind of generator. If you do go this route, you’ll have 3-phase AC coming down your tower, and into a rectifier (think “inverter in reverse” that will convert your 3-phase AC into DC power, ready to go into a charge controller, then into your batteries and loads.

I opted for DC for a few reasons. First off, I had a DC treadmill motor on-hand to build my first prototype with, second, I had some fairly thick gauge wire that I could run down my 30-foot tower so I’d minimize loss. And lastly, it was the most price effective way to go (read: cheaper than the other ways).


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3 Responses

  1. Hello,
    Very good blog you have, very thorough job.
    Don’t forget the fact that many people are just beginners in the build a wind generator idea, the simplest method we have found is to use a DC motor with a diode tied into your batteries.

    We have built 3 of them for ourselves and countless others for our friends, and for the past 15 years we have run our home exclusively this way.

    For more information about our homemade wind generator or how to build a wind generator of your own, just go to

    All the best,
    Les and Jane

  2. Phil Thomson says:

    Hy, nice to see, that people are caring about each other and helping others out. I am trying to do the same here. When I first wrote articles I thought that it is so easy to understand how to build a homemade wind generator, but unfortunately I soon realized that people dont actually understand how wind energy is created, how much energy it produces and more such things.

    I wish that you could read my articles and if you want add them here, just please contact me before.

    I just want to point out that, people tend to kill you with their questions 🙂

    Friendly Regards,

  3. Joe says:


    Thanks for the kind words!

    I haven’t gotten hit too much with questions, but I’m happy to try and field them in the comments so the community can benefit (you’re welcome to answer comments, too!).

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