Prądnica synchroniczna z magnesami trwałymi o wirniku zewnętrznym do przydomowych elektrowni wiatrowych

In the paper a new construction of permanent magnet synchronous generator with outer rotor is presented. This generator is dedicated for small windmills with vertical axis of blades rotation. Thanks to lower prices of NdFeB magnets such generators and windmills are getting more popular each year. Permanent magnet synchronous generator with outer rotor is an attractive choice for this kind of application because of simple and reliable mechanical construction and thanks to relatively high efficiency comparing to other types of rotating electrical machines.