Simulation of a Self-Regulating Eddy-Current Brakes with Permanent Magnets

This paper describes the possibility of control and regulating the electromagnetic torque of the eddy current brakes (ECBs) with permanent magnets (PMs). This achieved by dividing conducting disc rotor on several parts that are connected by springs. Because of interaction between centrifugal forces and spring forces, the rotor parts can take a place in working air gap where the PMs create magnetic field. Since centrifugal forces are determined by the rotational speed, self-regulation of the brake torque is realized. The paper presents the results of simulation of a magnetic field and a method for assessing the electromagnetic moment.