Transfer torque analysis of magnetic gear using final element for EV application

Shafee, Muhammad Adib (2024) Transfer torque analysis of magnetic gear using final element for EV application. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Although mechanical gear offers a high torque over volume ratio, it has inherent issues with heat, noise, vibration, and reliability. In recent years, magnetic gears (MG) and magnetically geared machines have been developed as a viable and workable substitute for traditional mechanical gearboxes in order to address the disadvantage of mechanical gears. In Concentric Magnetic Gear, (CMG), the number of pole pairs significantly influences the torque behavior of magnetic gears, yet comprehensive studies on the effects of various pole pair combinations remain limited. This information gap hinders the optimization of CMG designs, particularly for electric vehicle (EV) applications. Critical considerations such as gear ratio, torque ripple, and the relationship between inner and outer torque require further investigation to enhance the torque performance of EV systems. This study leverages JMAG software to analyze the transfer torque and optimize magnetic gear performance, focusing on minimizing torque ripple and maximizing average torque through various pole pair configurations. The research contributes to Sustainable Development Goals (SDGs) 7 (Affordable and Clean Energy) and 9 (Industry, Innovation, and Infrastructure) by advancing magnetic gear technology, reducing power losses, and improving energy efficiency in EVs. The findings support environmentally friendly transportation solutions and sustainable industrial growth, fostering innovative engineering practices. The objectives include design several model of the magnetic gear structure with various pole pair combinations using flux modulation principles and conduct a thorough evaluation of the torque behavior of Concentric Magnetic Gears using Finite Element Method (FEM) on several design pole pair. This work lays comparison all combination in term of torque ripple and the highest average torque also identifying configurations with optimal torque characteristics.

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