The group of inventions relates to electrical engineering, more specifically to electromechanics. The magnetic structure of a stator armature is designed so that the most part of the magnetic field of the magnetic conductors of the stator is closed outside the rotor inductor. The rotor inductor merely serves to periodically magnetize the magnetic conductor of the stator. During magnetization, no current passes through the windings of the stator armature, i.e. there is no demagnetizing reaction of the armature currents. With a pulsating field this is achieved using diodes or thyristors (transistors). During demagnetization, the diodes are open and the energy of the cores (or magnetic conductor) is converted into electrical energy. Almost all of the energy of the armature cores in the stator (save for that lost to hysteresis and eddy currents) is converted into emf and electrical energy. The most part of the field(s) of the stator cores is closed outside the rotor inductor and has no effect thereon. In the claimed methods, an open system of magnetic fields rather than a closed magnetic circuit with air gaps and slots is proposed. The magnetic field of the stator cores is for the most part closed outside the rotor inductor and is concentrated around the cores. The demagnetizing component of the current in the stator windings must be cut off. Current passes through the stator windings only during the demagnetization phase and a drop in Bi induction. This results in an increase in the electrical energy generated.