Authors: V.G. Kashirskikh

Title of the article: Reasons for simplifying the mathematical model of induction motor for dynamic identification

Year: 2019, Issue: 5, Pages: 33-37

Branch of knowledge: 09.05.03 Electrotechnical complexes and systems

Index UDK: 622.23.05

DOI: 10.26730/1816-4528-2019-5-33-37

Abstract: Currently, one of the most preferred areas of improvement in electric drives is the use of modern information technologies and computing tools. The article considers the possibility of simplifying the mathematical model of the induction motor for carrying out its dynamic identification in the course of operation on the basis of search methods of evaluation. Mining production is characterized by continuous change of operating conditions, heavy operation modes of mine machine drives, replacement of failed electric motors, as well as lack of specialists for additional adjustment of a rather complex system of dynamic identification in case of changes. Simplification of the mathematical model of the induction motor makes it possible to simplify search methods of evaluation and to ensure the required stability of assessment processes without additional adjustment in production conditions. Application of estimation methods allows us to calculate the current values of induction motor parameters which then can be used in an electric drive control system, also in subsystems of diagnostics and protection of the electric drive against emergency operation in real time. Work of computing algorithms is based on use of induction motor mathematical model and information contained in the measured currents and stator voltages. Relevance of this aspect is defined by the need to improve induction motor drives by increasing their efficiency, functional reliability and industrial safety.

Key words: electric drive induction motor electromagnetic parameters dynamic identification parameters estimation

Receiving date: 11.11.2019

Publication date: 31.12.2019

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