build wind generator
I want to build a simple wind generator?
Do I need to use an iron core iron or can I just use copper coils?
Let me be more specific.I know that I need to use magnets.The question is ,when I wind my copper generator coils,do they need to be wrapped around an iron core or will just copper coils work?
Let me be more specific.I know that I need to use magnets.The question is ,when I wind my copper generator coils,do they need to be wrapped around an iron core or will just copper coils work?
The other respondent didn’t answer your specific question (your Additional Details), so I’ll take a crack at it.
You apparently are satisfied that you have a workable permanent magnet rotor mounted on a shaft rotated by the wind turbine blades. You are apparently only concerned with building the stator through which the rotor will pass.
You can, of course, buy complete, simple alternators practically anywhere, which reduces the energy source of the problem to building the blades, mounting them to the rotor, attaching a tail to the blade shaft for wind to position the blades, and then processing the resulting electrical energy provided by the kinetic energy of the wind-driven rotating blades.
I definitely suggest the above procedure. Here’s an example of a guy who did just this
http://www.youtube.com/watch?v=aHB4zxWd3Ls
However … if you are doing this as a project and do wish to create your own stator, I definitely suggest you wrap the coils around a (gapped) iron core. The increased permeability of that system will provide much greater emf for a given rotation velocity. This will be better all around: the rotor will be overcoming much greater back torque for a given rotational velocity, which will greatly reduce mechanical velocities, stress, and so forth, as well as providing more efficient total energy transfer. An air core stator for a wind turbine would be about as useful as an air core stator for an ordinary motor-generator. That is, pretty much a toy.
How to build a home made wind generator
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