Optimal inductor setup for a power-hardware-in-the-loop machine emulator

This paper presents investigations on the setup of the power electronic stage within a power-hardware-in-the-loop machine emulator. The emulator draws currents from a drive inverter, equivalent to a real electrical machine, by a setup of a multi-phase interleaved-switched inverter coupled by inductors. The choice of these inductors is essential for the functionality of the emulator and thus is investigated. The influences of the inductor setup on the emulator's output currents slew rate as well as their ripple are worked out with respect to the desired application. Based on these results, an optimal inductor setup consisting of magnetically coupled inductors is extracted by using a control block diagram of the topology. As a result, the necessary control of the interleaved-switched inverter is unburdened.