Title :
Synchronous motors with Nd-Fe-B magnets and solid-steel rotor
Author :
Chalmers, B.J. ; Devgan, S.K.
Author_Institution :
Univ. of Manchester Inst. of Sci. & Technol., UK
Abstract :
The authors present a study of an alternative form of rotor construction which uses a solid-steel body and blocks of magnet material located beneath steel pole caps. This enables rectangular pieces of magnet to be used and only the pole caps need be skewed to avoid cogging torques. Asynchronous starting torque is contributed by eddy currents induced in the solid-steel rotor, primarily in the pole caps
Keywords :
boron; iron; neodymium; permanent magnets; rotors; synchronous motors; NdFeB magnets; asynchronous starting torque; eddy currents; pole caps; solid-steel rotor; synchronous motors;
Conference_Titel :
Electrical Machines and Drives, 1989. Fourth International Conference on (Conf. Publ. No. ??)
Conference_Location :
London
