Characteristic analysis of slotted-type axial-flux permanent magnetic couplers

It is known that permanent magnetic couplers (PMCs) are widely used for torque and speed transmissions. However, the current losses and the increased temperatures reduce the transmitting power of PMCs significantly. Therefore, in this paper, a slotted-type PMC is proposed mainly for improving the transmitting power and efficiency. To implement the proposed PMC structure, a mathematical model of the PMC is presented to obtain the design parameters. The simulation results show that the proposed PMC structure could offer higher torque under low slip speeds and can be applied in higher power-transmitting situations.