How do generators compare

As mentioned in a previous post the make up of the generator is important. The generator is made up of a set of magnets that are rotated by the propeller blades. These magnets are rotates so that they pass close to coils of wire. These coils are mounted on a stationary plate and are called the stator. Basically, the current is induce based on the number of turns of the coil passing through the flux of the magnetic force. The stronger the flux and the more turns in the coil the more current is induced. Remember, also that the magnetic flux is greatest closest to the magnet.
Different grade magnets and the larger the magnet the grater the flux.

The more current that is produced the harder it is to turn the rotors. So for light wind conditions you want the rotor spinning as soon as possible and it is better to design your generator to produce lower watts per revolution. For higher wind conditions you should opt for higher watt producing generators.

In the above graph 'stator 1' is designed to run at higher speeds that 'stator 3', but although it produces less power per revolution, it will be able to harness the winds power in much lower wind conditions. In the next post we will see how the wind power and the stator graphs inter-relate. This can be sued as a guide to help in designing your stators.