This project was very challenging for me, I should make changes because some components that I used does not have the characteristics required by the original project. I am referring mainly to the Neodymium permanent magnets that I bought with dimensions smaller for their high price. Consequently they have a "performance" less than the original so the global performance is not the top. But I was primarily interested in working of the alternator and I living in an apartment in the city (I would not know where to install a wind turbine!) for the moment I 'm not going to make changes, in the future it may be!