Integrated magneto mechanical power transmission: A comparative study of magnetic and conventional gearbox systems

The increasing demand for efficient, low noise, and low maintenance transmission systems in automotive applications has catalysed interest in magnetic gears. This study presents a comprehensive investigation into an innovative magnetic gearbox prototype that integrates clutch, torque limiter, and transmission functions into a single system. Utilizing both simulation and experimental methodologies, the research contrasts traditional mechanical gearboxes with magnetic counterparts, focusing on vibration behavior, torque transmission, NVH (Noise, Vibration, and Harshness) characteristics, and dynamic performance. A novel dual stage planetary magnetic gearbox is optimized using a Mult objective algorithm and validated through FEM simulation and real world testing. Results demonstrate significant improvements in noise reduction and system modularity, suggesting strong potential for magnetic transmission integration in electric and hybrid powertrains.