Efficiency and Cost Based Multi-optimization and Thermal/Electromagnetic Analyses of 3-Phase Dry-Type Transformer

ABSTRACT

Dry-type transformers are one of the most significant devices used in the conversion, transmission and management process of the electricity. In practice, the electrical energy conversion entails energy losses such as heat, electromechanical and electromagnetic losses during the transformation. Hence, primary importance is the efficiency of energy conversion for a device that converts AC voltage from one value to another with the same frequency. Therefore, this study offers the best 3-phase dry-type transformer modelling interested in cost and efficiency related to transformer losses and useful energy conversion. Transformer manufacturing industries will produce a low cost and more efficient dry-type transformer by using electromagnetic/thermal analyzing and multi-optimization methods. Firstly, a 250 VA 380/110 V 3-phase cast resin core type transformer is modelled by an electromagnetic field simulator software programme called as ANSYS/Maxwell so the transformer is analyzed in detail in terms of the thermal and electromagnetic. In addition, the cost and efficiency values are optimized based on the current density (s) and C coefficient parameters by the multi-optimization method. Secondly, the transformer model is analyzed as thermal and electromagnetic at the end of the simulation results. Finally, the transformer is tested experimentally so the test results are confirmed by the simulation results considering the measurements. It is hoped that this study will contribute to transformer designers and operators interested in the conversion, transmission and management of the electrical energy.

KEYWORDS:

• ANSYS/Maxwell
• Electromagnetic
• Energy conversion
• Thermal
• Transformer
• Optimization

Additional information

Funding

The author would like to acknowledge the Scientific and Technological Research Council of Turkey (TÜBITAK Project Number: 118E697) and the Scientific Project Unit of Adana Alparslan Turkes Science and Technology University (Project Number: 18332006) for full financial support.

Notes on contributors

Burak Esenboga

Burak Esenboga is pursuing toward the MS degree in electrical machines at Adana Alparslan Turkes Science and Technology University, Turkey. He is a research assistant at Adana Alparslan Turkes Science and Technology University. His current research interests include electromagnetic and thermal analysis on electrical machines, particularly on the dry-type transformers.

Tugce Demirdelen

Tugce Demirdelen received the MSc and PhD degree in Department of Electrical and Electronics Engineering from Cukurova University, Turkey, in 2013 and in 2016, respectively. In 2011, she worked the Department of Electrical and Electronics Engineering, Cukurova University as a research assistant. She has worked Adana Alparslan Turkes Science and Technology University as an assistant professor since 2017. Her research interests include power quality, power electronics, renewable energy resources, artificial neural networks, multi-level inverters, transformers. Dr Demirdelen has authored more than 50 technical papers published in journals and conference proceedings. Email: [email protected]