Development Course and Research Question of Magnetic Gear

The magnetic gear has the advantages of no friction between the rotor,simple manufacturing and installation,low cost and so on,it is an excellent transmission mechanism. The development history of magnetic gears from time to time is briefly described,and the research status of magnetic gears at home and abroad is compared. The topological structure of several kinds of common magnetic gears are introduced,and the advantages and disadvantages of these kinds of magnetic gears are compared. Its future development direction and research questions are summarized.