Force and Vibration Analysis of Magnetic Gears

In this paper the analysis of unbalanced magnetic forces in magnetic gears are presented, based on which guidelines for identifying suitable pole-pairs and pole-pieces combinations for magnetic gear design with minimum unbalanced force are proposed. Furthermore, the vibration analysis is conducted on two prototype magnetic gears to evaluate the impact of unbalanced magnetic forces on their operational characteristics. It clearly shows that magnetic gear designs without unbalanced magnetic forces have less vibration and improved stability.