Numerical simulation on magnetic field of permanent magnetic gear for non-contact transmission

Based on the analysis of calculation theories on magnetic field and torque of permanent magnetic gears, the characteristic curve of torque-angle are calculated with the use of Ansoft electromagnetic calculation software.

The paper summarized the magnetic force gear s characteristics and the typical permanent thulium magnetism gear drive system s structure,established the mathematical model of the dynamic system,solved the model by the assigned initial conditions and using MATLAB software,and then obtained the corresponding results.

Because of good performance and space saving, gearless permanent magnet synchronous traction machine is more and more widely used to drive the elevator.

According to the dynamic distribution of magnetic fields during the magnetic coupling transmission of blood pumps driven by extra magnetic fields,the paper analyzed the rules of change in the radial force and torque during the transmission of radical magnetic gears by means of analytic calculation,and established the mathematical model for calculating the radial magnetic coupling force and torque.

A novel magnetic-geared outer-rotor compact machine is proposed, which integrates a magnetic gear into a brushless DC motor (BLDCM), so that they can share a common cup rotor, then the inner space of the magnetic gear is utilized adequately, thus the low-speed and high-torque is achieved in direct driving, and the high efficiency of the whole system is gained simultaneously.