An Iterative-adaptive Mathematical Model of Electric Arc in Contact-arc Quenching Systems of Electromagnetic Contactors
DOI:
https://doi.org/10.24160/1993-6982-2024-2-27-38Keywords:
electromechanical switching device, electromagnetic contactor, air electromagnetic contactor, arc quenching chamber, electric arc, contactor dynamic operation mode, mode of rare switching operations, mathematical modelAbstract
The aim of the work is to develop an iterative-adaptive mathematical model of electric arc formation between the separating contacts in air at atmospheric pressure in the contact-arc quenching systems of electromagnetic contactors. Matters concerned with mathematical model verification and development of an adaptive application based on a mathematical model to simplify the interaction of the end user–model link are addressed.
The subject considered was theoretically elaborated using the COMSOL Multiphysics cross-platform software based on a finite element analysis.
The adequacy of the results obtained from the mathematical model was assessed using the comparison method. When comparing the data, the voltage drop was estimated according to [17] along with the voltage drop data obtained by simulation.
As a result of the study, a mathematical model has been developed; the calculation adequacy has been estimated, and an adaptive application based on the mathematical model has been developed.
The obtained results are applied to low-voltage contactors with arc quenching in air at atmospheric pressure, which are within the coverage of GOST IEC 60947-1, GOST IEC 60947-4 and GOST IEC 61095.
The developed mathematical model features good convergence and makes it possible to describe the arc generation and life processes in the contact-arc quenching systems of electromagnetic contactors, with separating contacts in air at atmospheric pressure. This opens the possibility to use the model for an approximate numerical analysis of the switching capacity of the contact-arc quenching systems of contactors, to evaluate the effectiveness of the designed system as a whole and, if necessary, to make changes to the design in order to improve the arc quenching performance indicators.
The model enables its user to numerically analyze the dynamic switching process in the contact-arc-quenching circuit under the nominal operation conditions and under the conditions of rare switching operations.
The developed interactive adaptation application is an effective tool that helps the user to vary miscellaneous system parameters to meet the specific requirements of the prototype sample.
When taken together, the proposed solutions make it possible to reduce various kinds of costs in the development and finalization of contact-arc quenching contactor systems.
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Для цитирования: Верстунин А.Ю., Ведешенков Н.А. Математическая итеративно-адаптационная модель электрической дуги в контактно-дугогасительных системах электромагнитных контакторов // Вестник МЭИ. 2024. № 2. С. 27—38. DOI: 10.24160/1993-6982-2024-2-27-38
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For citation: Verstunin A.Yu., Vedeshenkov N.A. An Iterative-adaptive Mathematical Model of Electric Arc in Contact-arc Quenching Systems of Electromagnetic Contactors. Bulletin of MPEI. 2024;2:27—38. (in Russian). DOI: 10.24160/1993-6982-2024-2-27-38
