Research on Fatigue Life of the Rotor Magnetic Pole Lead of Motor-generators for Compressed Air Energy Storages
Motor-generators for the compressed air energy storage require higher start-stop times than those of the conventional generators.In a start-stop cycle of the mo-tor-generator,the rotor magnetic pole leads are subjected to the alternating loads due to centrifugal force and tempera-ture rise,may lead to low cycle fatigue damage.In order to avoid fatigue failure of the rotor magnetic pole leads within the expected service life,the fatigue life of the rotor mag-netic pole leads is researched.The research results show that the low cycle fatigue life of the rotor magnetic pole leads of the motor-generator meets the application require-ments.
compressed air energy storagemotor-generatorrotor pole leadfatigue life