Experimental Analysis of Loss Reduction and Efficiency Enhancement in DC Generators using Advanced Materials
Keywords:
Advanced Materials, Brush Materials, DC Generator, Efficiency Improvement, Loss Minimisation, Magnetic CoreAbstract
This paper presents an investigation into loss minimisation techniques in DC generators through the application of advanced materials aimed at improving efficiency and operational reliability. Conventional DC generators experience significant energy losses in the form of copper losses, core losses, mechanical losses, and brush contact losses, which collectively degrade performance and increase thermal stress. To address these challenges, this study explores the use of high-conductivity copper–silver (Cu–Ag) alloys for armature windings, amorphous magnetic materials for core construction, graphene-based brushes for improved electrical contact, and ceramic bearings for reduced mechanical friction. A comparative analysis between conventional and advanced-material-based generator models is conducted using both simulation and experimental validation under varying load conditions. The results demonstrate a substantial reduction in total losses, with core losses reduced by up to 30% and overall efficiency improved from 82% to approximately 91%. Additionally, thermal performance is significantly enhanced, with noticeable reductions in operating temperature across all load levels. The integration of advanced materials also contributes to improved durability, reduced maintenance requirements, and longer service life. The findings highlight the critical role of material innovation in enhancing the performance of electrical machines. This study provides a practical and scalable approach for modernising DC generator systems, making them more energy-efficient and suitable for industrial and renewable energy applications.
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