Investigation of Rotor Braking Characteristics in a Drive with a Magnetoelectric Synchronous Generator

The operation of a permanent magnet generator designed to limit the speed of movement of the moving parts of the drive to a steady value by closing the winding to a capacitive load is considered. The mechanical characteris-tics describing the properties of the generator in this mode are represented by stable - ascending and unstable – descending branches. The expansion of the operating frequency range of the generator is achieved by increasing the length of the stable branch of characteristics, for which it is necessary to minimize the scattering inductance by switching to magnetic systems with open slots and coil winding on the stator and an alternating-pole magnetic system with permanent magnets on the rotor. To increase the number of poles and use the higher harmonics of the armature field, in particular the third, as the working one is recommended for increasing the electromotive force and power of the generator at the lower limit of the operating frequency range. The mechanical characteristics of the generator are used to determine its electromagnetic moment when substituting into the equation of motion of the drive to simulate the motion of its operation. High requirements for simulation results are determined by means of angular characteristics previously calculated by precise grid methods.