ИССЛЕДОВАНИЕ ЧАСТОТНО-РЕГУЛИРУЕМОГО ЭЛЕКТРОПРИВОДА С АСИНХРОННЫМ ЭЛЕКТРОДВИГАТЕЛЕМ

Abstract

Relevance AC electric drive is widely used in industry, it reduces power consumption and provides high reliability. It has received its wide distribution due to its high technological characteristics and simplicity of design, which have a positive impact on the introduction into production and modernization. Modeling of the electric drive control system is carried out in order to regulate and improve technological parameters. The assembled model in the Matlab/Simulink program using the SimPowerSystem library allows you to study the efficiency of controlling the electric drive of the pump using a visual model before switching to real objects, thanks to smooth speed control in a wide range of revolutions. Aim of research In this paper, a study is made of a frequency-controlled pump electric drive. During the hours of minimum load of enterprises where this system is used, the load on the device will decrease, since the consumption will be much less. Under loads, the power consumed by the drive can be reduced by changing the motor speed. This is achieved in many ways, but the most relevant is the use of a frequency converter. The main task is computer simulation of a frequency-controlled electric pump drive and the study of simulation results. Research methods In this study, the following methods were used: the study of scientific literature, computer modeling performed in the Matlab/Simulink software package using the SimPowerSystem library. Results The authors carry out a study of a frequency-controlled electric drive of the pump, which implements a reduction in the rotation speed to reduce the power consumed by the electric drive during the hours of minimum load of enterprises. The computer model of the object under study was developed in the Matlab/Simulink software package, the scalar control of the electric drive was evaluated. As a result of the simulation, oscillograms were obtained, where the possibility of reducing power consumption by adjusting the engine speed is clearly visible.