The patent entitled "Improvements to rotating magnetic field machines" relates to changes to the structures of the stator and of the inductor system of conventional rotating magnetic field machines. The first change consists of the fact that the stator poles are axial, so that there are no slots between the shoes thereof in the air gap, the windings are in the axial portion and are prefabricated coils, eliminating power loss, electromagnetic and mechanical vibration, electromagnetic emissions, and start-up torque, with a much lower copper content. The second change concerns the inductor system, which is made up of multiple cores, with a shared commutator and yoke, which greatly reduces the amount of copper needed, with external dimensions similar to those of the conventional electromagnet that they replace in these machines or in any other sphere of use, for the same number of ampere turns. It may be used in all rotating field machines.