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http://hdl.handle.net/10397/91138
Title: | Core stress analysis of amorphous alloy transformer for rail transit under different working conditions | Authors: | Shao, JW Xu, CD Cheng, KWE |
Issue Date: | Jan-2021 | Source: | Energies, 1 Jan. 2021, v. 14, no. 1, 164 | Abstract: | The rail transit system is a large electric vehicle system that is strongly dependent on the energy technologies of the power system. The use of new energy-saving amorphous alloy transformers can not only reduce the loss of rail transit power, but also help alleviate the power shortage situation and electromagnetic emissions. The application of the transformer in the field of rail transit is limited by the problem that amorphous alloy is prone to debris. this paper studied the stress conditions of amorphous alloy transformer cores under different working conditions and determined that the location where the core is prone to fragmentation, which is the key problem of smoothly integrating amorphous alloy distribution transformers on rail transit power supply systems. In this study, we investigate the changes in the electromagnetic field and stress of the amorphous alloy transformer core under different operating conditions. The finite element model of an amorphous alloy transformer is established and verified. The simulation results of the magnetic field and stress of the core under different working conditions are given. The no-load current and no-load loss are simulated and compared with the actual experimental data to verify practicability of amorphous alloy transformers. The biggest influence on the iron core is the overload state and the maximum value is higher than the core stress during short circuit. The core strain caused by the side-phase short circuit is larger than the middle-phase short circuit. | Keywords: | Amorphous alloy transformer Large electric vehicle system Magnetostriction Normal load Load imbalance Overload Short circuit No-load current No-load loss |
Publisher: | Molecular Diversity Preservation International (MDPI) | Journal: | Energies | EISSN: | 1996-1073 | DOI: | 10.3390/en14010164 | Rights: | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The following publication Shao, J.; Xu, C.; Cheng, K.W.E. Core Stress Analysis of Amorphous Alloy Transformer for Rail Transit under Different Working Conditions. Energies 2021, 14, 164 is available at https://doi.org/10.3390/en14010164 |
Appears in Collections: | Journal/Magazine Article |
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Shao_Core_stress_analysis.pdf | 14.97 MB | Adobe PDF | View/Open |
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