In our study, we set an aim that we set up a small wind power generator on the top of a building. When installing on the top of a building, there are few advantages. One, it do not cause much the damage to the environment around it as opposed to other wind power generator. Other, because wind is stronger, it is good for wind power generator the top of building. The purpose of our study is leading the design indicator of the optimal internal structure in the small wind power generator installed on the top of building. Therefore, we did two experiments. First, we did the magnetic analysis. Second, we did the experiment of generation of electricity. And, we consider the design indicator of the optimal internal structure in the small wind power generator by comparing these two experiment results. Moreover, the objective generation quantity of the designed generator was set as 5 kilowatt.
