Dipole based model of static and dynamic forces in ironless drives with active control of 6DOF

This research covers the magnetic dipole-based modelling of ironless levitating systems with 6 actively controlled degrees of freedom. As the system contains only permanent magnets and electrical conductors it can be modelled without the need to solve the differential Maxwell's equations, in the model region with a finite element mesh, but by using a point-cloud based approach. The electromagnetic solver is implemented using only basic vector operations without any linear algebra or iterative processes. The permanent magnet segments are represented by point dipole magnets, and the conductors by point current sources. Any shape of magnets and coils can be modeled or imported from another finite element solver. A simulation model will be shown including the computation of the force, torque, magnetic flux and the eddy current losses in the stator coils. The dynamic performance of the drive is considered, and an improved system is shown based on reduced eddy losses. The analysis considers the weight, acceleration and moving speed of the drive.