Abstract
In industrial applications, conventional mechanical gears are widely used but suffer from wear, lubrication requirements, and noise due to mechanical contact. In contrast, flux-modulated magnetic gears transmit torque without contact, offering advantages such as maintenance-free operation, low noise, and high reliability, making them promising for next-generation power transmission systems.
Nevertheless, several issues remain unresolved, including loss of synchronization under high load, temperature rise during prolonged operation, and demagnetization of permanent magnets. These phenomena can significantly affect system performance and reliability and are key obstacles to practical implementation. They often emerge as complex transient behaviors during transitions from steady state to non-steady conditions, where multiple physical effects interact. Experimental studies that evaluate these non-steady behaviors in detail are still limited.
This study investigates a prototype flux-modulated magnetic gear to evaluate transition phenomena such as loss of synchronization, heat generation, and demagnetization based on measured data. By analyzing torque transmission characteristics, rotational speed, and temperature variations, the mechanisms underlying non-steady behavior are clarified, providing insights beneficial for future design guidelines.
