Abstract
Pulse Width Modulation technology is widely used in High-Speed Railway. The harmonic distribution caused by this technology is extensive, the characteristic harmonics are quite obvious, and it influences the stability of grid-train coupling relationship. In the study of the relationship between traction grid and train, matlab off-line simulation technology is mostly adopted. But this method has the disadvantages of slow simulation speed, it can not reflect the control algorithm and operation state of the train. This paper adopts the hardware-in-the-loop real-time simulation technology, which contacts the dSPACE simulator with actual controller to simulate the train and verify the control algorithm, and the Xsim simulator is used to build the traction grid model at the same time. Finally, two devices are combined to simulate the train operation state on traction power supply system in real time, so as to prepare for the development of the train algorithm.
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