The generator consists of the stator, two windings on it - stator and the windings of the traction electromagnet, a rotating shaft, a rotor moving magnetic conductor with permanent magnets, able to move on the shaft in the axial direction (within the small range - from 0,5 mm to 4-5 mm), a return damping spring, the electronic regulator of current of the traction electromagnet. With the changing of rotor angular frequency the electronic regulator changes current of a traction electromagnet in accordance with a given law, moving a rotor magnetic conductor along the rotor shaft, changing the size of the main magnetic air gap of the electric machine. Thus the magnetic flux linkage and, therefore, the rotating torque (resistance torque) on a rotor shaft are changing depending on the angular speed of the rotor. With a small angular frequency of the rotor the main air gap in a magnetic circuit of the electric machine has the maximum value. With the increasing of the angular frequency of rotation the traction electromagnet reduces the main air gap in a magnetic circuit of the generator thus increasing the flux linkage.