25 kV-50 Hz railway power supply system emulation

for Power-Hardware-in-the-Loop testings

This paper presents a methodology to consider the impedance of a grid in power hardware in the loop (PHIL) experiments to validate power converter control in presence of harmonics or resonances in the network impedance. As the phenomena to emulate are in a large frequency range, the skin effect in conductors has to be taken into account. A procedure is developed to model the network. Then, the model is simplified to reduce the computation requirements and discretised for real-time implementation. The proposed method has been applied to analyse the harmonic interactions due to on-board converters running on a 25 kV-50 Hz railway infrastructure for frequencies from 0 to 5 kHz. The model is computed in Matlab-Simulink, a SpeedGoat Performance Machine and a linear power supply are used for a real time implementation. The converter under test and the test bench are presented. Some experimental results are presented, showing the feasibility and the usefulness of the proposed approach.

Published in: IET Research Journal Papers

Link : https://goo.gl/kRjmdm

Caroline Stackler 1,2∗, Nathan Evans1, Luc Bourserie1, François Wallart 1, Florent Morel 1,3, Philippe Ladoux 2

1 ITE SuperGrid Institute SAS, 23 rue Cyprian, 69100 Villeurbanne, France

2 Université de Toulouse, INPT, UPS, CNRS, LAPLACE (Laboratoire Plasma et Conversion d’Energie), ENSEEIHT, 2 rue Charles Camichel, BP 7122 F, 31071 Toulouse Cedex 7, France

3 Université de Lyon, Ecole Centrale de Lyon, Laboratoire Ampère, UMR CNRS 5005, 36 avenue Guy de Collongue, 69134 Ecully Cedex, France

* E-mail: caroline.stackler@supergrid-institute.com