ОПТИМИЗАЦИЯ ЭЛЕКТРОПРИВОДОВ ПЕРЕМЕННОГО ТОКА ПРОМЫШЛЕННЫХ МЕХАНИЗМОВ

D.Yu. Khriukin; E.M. Tulegenov; K.D.  Semenova; V.A. Kushnarev; D.A. Sychev

doi:10.14529/power220406

Authors

D.Yu. Khriukin South Ural State University, Chelyabinsk, Russia
E.M. Tulegenov South Ural State University, Chelyabinsk, Russia
K.D. Semenova South Ural State University, Chelyabinsk, Russia
V.A. Kushnarev South Ural State University, Chelyabinsk, Russia
D.A. Sychev South Ural State University, Chelyabinsk, Russia

DOI:

https://doi.org/10.14529/power220406

Keywords:

finite element method, current circuit electric drive, electric drive mathematical model, synchronous reluctance motor

Abstract

This article discusses optimization problems in the design of an AC electric drive kit with a capacity of up to 1 MW. The need for optimization in the design of the electric drive is due to the technical and economic indicators of the long-term operation of the electric drive. The main problem of optimizing the AC electric drive is the complexity of the mathematical description of the frequency converter electric motor. A generalized mathematical model of AC electric drives is presented, in which the nonlinear part of the frequency converter is represented by an aperiodic link with a time constant T_i, a pure delay link with a time constant and a switching function Ψ_ni, which are approximating a semiconductor converter for the transfer function. Such a mathematical model makes it possible to synthesize power circuits and an i-beam converter control system. The optimization of an electromechanical converter using the finite
element method is considered.

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