Abstract
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.
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