System of Automatic Voltage Stabilization of the Generator with Shunting of the Magnetic Flux

Abstract

The aim of the work is to develop and study the system of automatic voltage stabilization of a three-phase magnetoelectric generator with shunting of the magnetic flux in the conditions of change of rotation speed. The magneto electric generator is intended for use in autonomous installations of small generation of the electric power. The generator is created on the basis of the serial induction electric motor that provides economy of production of a power source. The operating characteristics of the experimental sample of the magnetoelectric generator are presented, which show the possibility of voltage control. A mathematical model of a magneto electric generator with magnetic flux shunting in the rotor coordinate system is presented. The system of automatic voltage stabilization of a three-phase magneto electric generator with magnetic flux shunting in the conditions of robot speed change is considered in the work. The voltage of the generator is controlled by changing the magnetic flux of the working area using the current of the stationary winding of the shunt, powered by direct current. Algorithms for controlling the shunt current and generator voltage based on the method of inverse dynamics problems in combination with the minimization of local functional capabilities of instantaneous energy values are a scientific novelty, providing dynamic decomposition of the system and low sensitivity to parameter changes. The developed control system provides astatic voltage regulation. The quality of generator voltage control when changing the rotor speed within $+15\%$ of the nominal value was studied.