Levitation and Thrust Control of a Completely Passive Core Excited Solely by Armature Currents of a Linear Synchronous Motor

抄録

Electromagnetic suspension is an essential technique commonly used in industrial transport system without mechanical contacts. The reduction of the energy consumption in mover side is significant. Authors have proposed a 4-pole electromagnet with three-degrees of freedom in its control, which works well for independent levitation stabilization of a single electromagnet. They also proposed a linear synchronous drive, in which the attractive force produced by armature flux of a linear motor is used as levitation force, for realizing a completely passive mover. The principle of the simultaneous control of levitation force and thrust is based on the separation of d- and q-axis current components. The basic idea, and simulation results are described as well as its successful experimental verification.