Current generator with fractional slot winding

Claim 1

A current generator comprising, in combination, a stator with an alternating current stator winding; first diode means in said stator for rectifying the output current of said generator; a rotor; a rotatable shaft for carrying said rotor; bearing members for supporting said shaft; excitation winding means on said rotor; second diode means on said rotor; auxiliary means rotating with said rotor and energizing said excitation winding means through said second diode means, said auxiliary means having a direct current stator winding; alternating current winding means on said auxiliary means and influenced by said direct current stator winding, said alternating current winding means being a fractional slot winding with short pitch for reducing the amplitude of the voltage spikes delivered to said excitation winding means by said auxiliary means; and voltage regulating means connected to said output current of said generator and to said direct current stator winding for energizing the latter with said output current, and wherein the product of the number of phases and the number of slots per pole and per phase constitutes an integer and an actual fraction, the value of the numerator of that fraction within the range in which said numerator is at least one-half, but less than the whole, of the denominator differing by 1 or 2 from the value of the denominator, said numerator within the range in which said numerator is at least equal to 1 but is smaller than one-half of said denominator having the value 1 or 2.