Analysis of an induction planar actuator

The induction planar actuator, i.e. IPA, proposed in this study presents an electromagnetic structure formed by a static ferromagnetic core with an aluminium plate that corresponds to the secondary, and a mover also called primary; the latter comprehends two three-phase windings which are orthogonal to each other. When they are fed by a three-phase AC excitation, a moving magnetic field takes place, and can travel along the x-axis and the y-axis direction simultaneously. The travelling magnetic field induces electrical currents in the secondary material. The interaction between the magnetic field and the current produce a planar force, responsible for the car movement under the work area. The 3D flux density distribution of the actuator suggests the employment of a grain-insulated soft magnetic composite to reduce eddy currents and losses on the core of the primary. Flux magnetic density, induced current, traction and normal forces are studied.