Train-traction model

This demo models a Train Traction Drive System, with two separate identical DC systems. To achieve hard-real-time simulation the rectifier and inverter were modeled with RT-EVENTS Time-Stamped Bridges and ARTEMiS. The VSC-based 2-arm rectifiers providing the DC voltage (1500 V rating) to each link are AC-fed by a single-phase Catenary Panto rated 25 kV, 50 Hz, through a double secondary traction transducer. The two DC links are parallel connected through diodes, to a simple RL load. Each DC-link has a filter tuned at 100 Hz (2nd harmonic). The drive systems (one on each DC-link) consist in two (2) sets of two (2) asynchronous motors, with each set being fed by 3-arm IGBT inverters. The asynchronous machines are star connected machines, rated 297 kW and 991 Vrms LL. The machines are speed controlled.

This model allows the study and validation of various phenomena, such as DC-Link to ground fault, three- or single-phase fault at IGBT output, loss of the catenary as well as multiple contingencies on the gating signals of the IGBT drives.

For a good overview, click Here  (3 MB)

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