Authors: N.A. Korolev, M.S. Kovalchuk, Ya.M. Malkova

Title of the article: Influence of magnetizing circuit inductance deviations on characteristics of electric drive with scalar control system

Year: 2024, Issue: 4, Pages: 13-26

Branch of knowledge: 2.4.2. Electrotechnical complexes and systems (engineering)

Index UDK: 62-5:004.5

DOI: 10.26730/1816-4528-2024-4-13-26

Abstract: The article is devoted to the study of automated electric drive with induction motor and scalar control system. Operating conditions and modes of operation of the electric drive determine its actual service life. Wear of induction motor as a key link of electric drive is associated with deviation of its parameters from nominal. The deviation of the substitution circuit parameters determines the resulting change in characteristics. The parameters of the substitution circuit determine the accuracy of adjusting the regulators and optimal algorithms in the electric drive control system. In continuous operation modes, the possibility of autotuning of regulators, which requires stopping or idling mode, is excluded. Occurrence of inter-turn faults in the stator winding of the electric motor leads to a change in the inductance of the magnetizing circuit. The inductance of the magnetizing circuit has the greatest influence on the energy and mechanical characteristics of the electric drive. The paper considers the influence of the magnetizing circuit inductance value of the induction motor on the behavior of the electric drive control system. Modeling of the electric drive is carried out at change of the magnetizing circuit inductance in the range of 0.7-1.1-Lm. The behavior of the scalar control system closed by speed is evaluated by the main energy (power factor, efficiency) and mechanical (speed, electromagnetic torque) characteristics of the electric drive.

Key words: automated electric drive scalar control system induction motor substitution circuit parameters magnetizing circuit inductance technical condition

Receiving date: 10.06.2024

Approval date: 15.10.2024

Publication date: 31.10.2024

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