Abstract :
INDUCTION MOTORS have been built in Germany with a free running member carrying d-c excitation. They had excellent characteristics, including 100% power factor. Permanent magnets have been substituted for d-c excited poles in magnetos and in synchronous motors with good results. Why not, one may ask, substitute them for the d-c free running member of the German motor? Assuming this could be done, a design for an 8-pole 10-hp 60-cycle motor, based on the German motor, was made, its equivalent circuit analyzed, and its performance computed.
