Analysis of Coupled Thermal and Electromagnetic Processes in Linear Induction Motors Based on a Three-Dimensional Thermal Model

Victor Goman, Vladimir Prakht, Vladimir Dmitrievskii and Fedor Sarapulov
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Victor Goman: Nizhniy Tagil Technological Institute, Ural Federal University, 622000 Nizhniy Tagil, Russia
Vladimir Prakht: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia
Vladimir Dmitrievskii: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia
Fedor Sarapulov: Department of Electrical Engineering, Ural Federal University, 620002 Yekaterinburg, Russia

Mathematics, 2021, vol. 10, issue 1, 1-20

Abstract: The article describes a mathematical model of interconnected electromechanical and thermal processes in a linear induction motor (LIM). Here, we present the structure of the thermal model and provide the calculation formulas of the model. The thermal model consisted of eight control volumes on each tooth pitch of the LIM. Moreover, we also present a model of electromechanical processes and its interaction with the thermal model. The electromechanical model was based on the detailed magnetic and electrical equivalent circuits of the LIM. Model verification was performed using a model based on the finite element method and using experimental data. We also conducted a study focused on the necessity of considering the influence of various features of the thermal processes. We herein discuss the application of the model implemented in the MATLAB/Simulink, which was used to analyze the thermal performance of linear transport and technological induction motors. For the traction single-sided linear induction motor, we determined limits of safe operation by considering the unevenness of heating along the length in two cases: natural cooling and forced cooling. For forced cooling, required values of air flow were determined. For the arc induction motor of the screw press, the influence of various factors (i.e., reduction of the stroke, the use of a soft start, and the use of a forced cooling) on heating was evaluated.

Keywords: linear induction motor; coupled thermal and electromechanical analysis; thermal model; thermal equivalent circuit; simulation (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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