ПРОГРАММНЫЙ КОМПЛЕКС ДЛЯ РЕАЛИЗАЦИИ АСИНХРОННОГО ЧАСТОТНОГО ПУСКА ВЫСОКОВОЛЬТНЫХ ДВИГАТЕЛЕЙ И СНИЖЕНИЯ ВРЕМЕНИ ПЕРЕРЫВА В РАБОТЕ ДВИГАТЕЛЯ ПРИ КРАТКОВРЕМЕННОЙ ПОТЕРЕ ПИТАНИЯ

Abstract

Relevance Most of the electricity consumed comes from electric drives (ED) of various technological processes. The most common way to increase the efficiency of an electric drive is the use of a variable frequency drive (VFD). However, the use of VFDs in some cases causes a decrease in the operating efficiency of the electric drive, this is due to the high sensitivity of the frequency converter to network voltage dips, leading to the failure of the inverter and to the stop of the technological process. A current direction is the development of algorithmic methods for increasing the stability of electric drives. Aim of research Increasing the stability of a frequency-controlled motor during emergency conditions in the power supply system. Development of a power supply circuit for an electric drive, and research into the algorithm for operating the inverter in emergency modes. Methods The study of the developed method was carried out in the Matlab Simulink software package. Results A power supply circuit for an electric drive with a synchronized bypass line and a main line with a frequency converter operating according to the developed algorithm is proposed. A study of the influence of the error in measuring the shaft rotation speed on the accuracy of maintaining the recuperation of the DC transformer, as one of the ways to increase the resistance of the VFD to short-term voltage dips in the network was carried out.