Modeling a Frequency Converter with Vector-Algorithmic Control

The paper discusses the existing methods of regulating the speed of rotation of a three-phase induction motor, their advantages and disadvantages. The most efficient way to change the engine speed is to change the frequency of the supply voltage. A frequency converter developed using vector-algorithmic control is proposed and the result of mathematical modeling of the proposed frequency converter in comparison with direct-on-line motor with MATHLAB Simulink environment is presented. This frequency converter uses a simple control system that can be performed in various ways, which allows adjusting the rotation speed of a three-phase induction motor, for example, in an electric drive for longitudinal movement of a crane beam, where 2-3 fixed speeds are needed.