Insulate Grade H Permanent Magnet Generator Product Overview 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 a prime mover, such as a wind turbine, water turbine, or engine, causes the rotor to turn, the magnetic field produced by the permanent magnets rotates along with it. This rotating magnetic field interacts