Stability of Magnetic Bearings on Lorentz Forces

Magnetic Bearings

Lorentz Forces in the Container

Leading topic of this article is description of Lorentz forces in the container with cuboid and cylindrical shape. Inside of the container is an electrically conductive melt. This melt is driven by rotating magnetic field. Input data for comparing Lorentz forces in the container with cuboid shape were obtained from the computing program NS-FEM3D, which uses DDS method of computing. Values of Lo...

Active Magnetic Bearings (amb)

A magnetic bearing is a bearing which supports a load using magnetic levitation. Magnetic bearings support moving machinery without physical contact, for example, they can levitate a rotating shaft and permit relative motion without friction or wear. In active magnetic bearings (AMB) a stable equilibrium is achieved by means of one or more control loops. The use of control loop for maintaining ...

“Null-E” Magnetic Bearings

Using electromagnetic forces to suspend rotating objects (rotors) without mechanical contact is often an appealing technical solution. However, in real life magnetic suspensions have to satisfy many engineering performance requirements beyond the simple compensation for the rotor weight. These typically include adequate load capacity and stiffness, low rotational loss, low price, high reliabili...

Forces on Magnetic Dipoles

Deduce expressions for the force on a permanent Ampèrian magnetic dipole with momentmA (due to a loop of electrical current), and for the force on a permanent Gilbertian magnetic dipolemG (due to a pair of opposite magnetic charges), when the dipoles are (instantaneously at rest in an external electromagnetic field. Experiments have been performed to determine whether a neutron [6] has an Ampèr...