25 kV–50 Hz railway power supply system emulation for power-hardware-in-the-loop testings

Caroline Stackler (1, 2) , Nathan Evans (2) , Luc Bourserie (2) , François Wallart (2) , Florent Morel (3, 2) , Philippe Ladoux (4)

1 LAPLACE - LAboratoire PLasma et Conversion d'Energie
2 SuperGrid Institute SAS
3 EE - Ampère, Département Energie Electrique
4 LAPLACE-CS - Convertisseurs Statiques

This study presents a methodology to consider the impedance of a grid in power-hardware-in-the-loop experiments to validate power converter control in the 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.

Mots clés: railway infrastructure; resonances; test bench; power converter control; network impedance; power-hardware-in-the-loop testings; onboard converters; SpeedGoat performance machine; skin effect; harmonic interactions; harmonics; railway power supply system emulation; power-hardware-in-the-loop experiments; real-time implementation; Power converters; railways; power grids; railway electrification; traction power supplies

Domaines: Energie électrique

Caroline Stackler, Nathan Evans, Luc Bourserie, François Wallart, Florent Morel, et al.. 25 kV–50 Hz railway power supply system emulation for power-hardware-in-the-loop testings. IET Electrical Systems in Transportation, 2019, ⟨10.1049/iet-est.2018.5011⟩. ⟨hal-02068124⟩