A new self-excited synchronous induction motor

S. R. Bergman: I think this new motor is a courageous attempt to deal with a difficult and complex problem, namely, the problem of power-factor correction. This motor is of the synchronous type and therefore has a constant speed over the running range. This feature, however, is of no advantage since experience has shown that the small amount of slip in the standard induction motor gives an excellent speed characteristic.