20KW Free Energy System - Rated Frequency 50Hz/60Hz Product Overview The fundamental concept behind a permanent magnet generator centers on the rotor, which is equipped with permanent magnet materials to produce a steady magnetic field. This constant magnetic field is crucial for the generator's operation. When an external prime mover, such as a wind turbine, water turbine, or engine, causes the rotor to spin, the magnetic field created by the permanent magnets rotates