Johann W. Kolar

TL;DR: In this paper, a small sphere spinning in a rotating magnetic field is analyzed in terms of the resulting magnetic flux density distribution and the current density distribution inside the ball, and the motor torque and the eddy current losses can be calculated.

TL;DR: In this paper, the authors present an intuitive, educational introduction to inductive power transfer (IPT) system design for practicing engineers who are new to the field while following the path of the energy through the IPT system, the contactless power transfer with a circuit-oriented approach, extended by an analysis of the field patterns and the energy flux across the air gap.

TL;DR: In this paper, an analytical derivation of the torque and force components in all three directions is detailed for the skewed winding, which may compromise stable operation in applications where for example magnetic or gas bearings are involved.

TL;DR: The overall efficiency, the loss contri- butions and the volume and weight of the main components are given for 6kW rated system output power at 400Vrms line-to-line input and this provides a basis for the selection of the appropriate topology for an industry application.

TL;DR: A hybrid inverter concept for switch-mode power amplifiers as used, e.g. in power-hardware-in-the-loop testing, features a significant increase of the full-range system bandwidth and improves by more than an order of magnitude for the considered 100 kVA example system compared with a conventional approach.