Neodymium 3 Phase AC Permanent Magnet Generator - Fuelless Green Energy Advanced Energy Solution for Industrial Power Needs Product Description The fundamental concept behind a permanent magnet generator is that its rotor contains permanent magnet materials, which create a steady magnetic field. This magnetic field remains constant as the rotor spins. When an external source of mechanical power, such as a wind turbine, water turbine, or an engine, drives the rotor to rotate,