Implementation of a Power Hardware In-The-Loop Platform Using the Damping Impedance Method

Abstract

This paper presents the practical implementation of a PHIL simulation platform using the damping impedance method. To be successful this requires the identification of the impedance of the hardware under test. We use an identification strategy based on spectral analysis, to obtain a non-parametric identification of the HUT's impedance, followed by a fitting routine that obtains a parametric representation of it. The PHIL platform is then simulated to test the identification routine with passive and active HUTs. Implementation of the PHIL platform is done in a multi-core real-time target, allowing for the electrical simulation and identification routine to run in parallel, on the same device. Experimental verification of the simulated scenarios is performed. A fundamental difference between the identification of passive and active HUTs is found and strategies on how to cope with it are proposed and implemented. Finally, recommendations are given about the realisation of further PHIL simulations with the platform.