Magnetism

Causes of loss of magnetism in wind turbine generators

Possible CausesMaterial Fatigue: The weakening of blade material over time due to repeated stress. Impact with Foreign Objects: Collisions with birds, debris, or hail. . Abstract— Two significant issues in wind power asynchronous generators are magnetic wedge loss and coil movement resulting in winding faults. Most of the time the failures occur unexpectedly or require borescope or visual inspections of the generator stators. Wind. . Why are rare earth magnets used in wind turbines? The wind turbine industry prefers rare earth magnets for three main reasons: Additionally, due to the high-energy density permanent magnet generators offer, some weight associated with copper windings are eliminated along with problems of corrupting. . of the world's largest wind turbines. Rare earth magnets, such as powerful neodymium-iron-boron magnets, have been used in some wind-turbine designs to lower costs, improve reliability, and reduce the ne ted the first electromagnetic generator.