Abstract
Low-frequency oscillation (LFO) in the train–network interaction system would easily lead to traction blockades and seriously threaten the normal operations of high-speed railway systems. This paper proposes a notch filter-based active damping (NFAD) control method to suppress the LFO. First, a small-signal model of the train–network interaction system is developed to investigate the LFO mechanism. By sensing and feeding back the input current of four-quadrant converter, NFAD control method is then formulated to emulate a virtual resistance in order to increase the system damping. Furthermore, a fundamental notch filter is designed to mitigate the damping influence of virtual resistance on the fundamental component. Finally, simulation and experimental results are employed to demonstrate reliability and effectiveness of the proposed method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: IEEE Journal of Emerging and Selected Topics in Power Electronics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
