Modeling and analysis of vector control systems for asynchronous motor

Viktor Meshcheryakov,Tatyana Sinyukova,Vladislav Gladyshev,Lyudmila Solovieva,Alexey Sinyukov,Elena Gracheva,A Fedyukhin,S Dixit

doi:10.1051/e3sconf/202022001075

Viktor Meshcheryakov, Tatyana Sinyukova + Show 6 more

Open Access

https://doi.org/10.1051/e3sconf/202022001075

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Abstract

At metallurgical enterprises, slab transfer devices are widely used, the principle of operation of which is to lift slabs in the steel casting area and transport them to the storage area. The article considers the existing control system of the slab transfer device. At the moment, the mechanism has a DC motor controlled by a thyristor Converter. This system is difficult to maintain and has a large size. As an upgrade, the installation of an asynchronous motor with a frequency Converter is proposed. In the Matlab environment, mathematical models of single-circuit and double-circuit DC motor control systems and a model of asynchronous motor with a short-circuited rotor have been developed. A vector control system is used as an AC motor control system. As a result of simulation performed analysis of the characteristics. As an optimization of the system with vector control, in order to reduce dynamic loads on the turntable, it is proposed to introduce an intensity setter into the system, the use of which provides the necessary restriction of accelerations and jerks, reduces shock loads on the mechanical components of the electric drive, including a reduction in the load on the turntable when lowering the slab.

Highlights

The article reviewed the existing device management system to transfer the slabs
UPS-9 consists of a bridge with a pincer grip moving in the working area of the UNRS, electrical equipment of the bridge and electrical equipment permanently located in the workshop
The overshoot error is no more than 5 percent, which corresponds to the adjustment of the armature current loop to the modular optimum

Summary

General information

The article reviewed the existing device management system to transfer the slabs. As proposed upgrading plant asynchronous motor with frequency converter. A complete mathematical model of asynchronous motors was used, written in the orthogonal coordinate system x, y. The rotor flux linkage magnitude module is fed to the Phir output, and the angle is converted to sine or cosine for the UQ1 and UQ2 coordinate transformation blocks.

Modeling

Comparison of different types of PWM

Findings

Conclusion