Abstract
The mechanical gear, which is used in many fields of modern industry, is used primarily in power transmitting mechanical devices. Magnetic gears, which solve the physical contact problem of mechanical gears, have drawn much attention. The magnetic gear has many advantages such as no mechanical friction loss, very little noise and vibration, and no need for lubricant. Because of these unique noncontact characteristics, the magnetic gear has many advantages and allows for high efficiency operation. However, magnetic gears are expensive because they contain rare-earth permanent magnets, to generate magnetic fields and thereby transmit power by using a magnetic field generated by permanent magnet. Therefore, this paper applies the salient structure of the conventional magnetic gear and progress optimization of both magnet angle and novel pole pieces using central composite design, which is a response surface method. In addition, experimental data required for predicting the relationships among design variables are obtained using the finite element method based on 2-D numerical analysis.