Vjetro turbine-pregled/ Wind tourbine

Page 15

My favorite configuration is a set of steel disks with matching magnets facing each other, and the coil(s) in the middle. Here you are guaranteeing that the magnetic field completes, largely through the coil in question, and that it is quite strong. The drawback, of course, is that this requires twice as many of these expensive magnets. There is no rule requiring a certain number of magnets or a certain number of coils. If you have even one magnet passing by one coil, you're going to make power of some sort. Assuming that we're going to have a number of poles, what number to choose? As with all things power-related, it's helpful if you create the electricity at roughly the voltage you need it. Of course, you can always put all of your coils in series to create the highest voltage, and if you have a distance to go from the turbine to the load, that might be the best thing to do (assuming single phase). If you're finding that your unit is producing ridiculously high voltages on a regular basis, ones you can't efficiently use, you may wish to parallel some of your coils. Let's take an example with 12 magnets and 12 coils, all evenly spaced. All of the magnets are passing by all of the coils at the same time, so if they're all in series, you get the greatest voltage. Now take 2 sets of 6 coils each, in parallel, and you have half the voltage and twice the


Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.