F113003 Product Development of a Magnetic Gear and Transmission

Abstract

With developments of stronger permanent magnets, the application field of magnetic coupling is spreading in recent years. Since the magnetic couplings can transmit power by non-contact, it can add physical isolation to a transmission shaft, and it also can transmit driving power through a partition. Adding to these benefit of magnetic coupling, a magnetic gear can also removed the wear and noise from mechanical contact, which are main problems in mechanical gear. However, since torque transmitted by conventional magnetic gears is extremely low compared with mechanical type of same size so far, it has only used in limited application area. To solve this problem, a magnetic gear which is eaual to a mechanical gear for 750W industrial motors was developed. In this paper, design criteria and measurement results of the prototype magnetic gear is described.