Magnetic levitation system

摘要

A magnetic levitation system with a near zero power-loss and a high ratio of lift-force to permanent-magnet-weight is disclosed. The present magnetic levitation system includes a ground-fixed object for sustaining a carrier device; a hybrid electromagnetic device located opposite to the ground-fixed object and having a magnetic coil, an air gap being defined between the ground-fixed object and the hybrid electromagnetic device, the attracting force being generated in the air gap, the hybrid electromagnetic device including a permanent magnet and an E-shaped electromagnet; and a feedback control device electrically connected to the hybrid electromagnetic device for generating a voltage control signal in response to a size of the air gap and the current in the electromagnetic coil, the voltage control signal controlling the attracting force to move the carrier device upwardly or downwardly.