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- Title
Low Frequency Stability of AC Railway Traction Power Systems: Analysis of the Influence of Traction Unit Parameters.
- Authors
Frutos, Paul; Ladoux, Philippe; Roux, Nicolas; Larrazabal, Igor; Guerrero, Juan M.; Briz, Fernando
- Abstract
Dynamic interactions between AC railway electrification systems and traction unit power converters can result in low frequency oscillation (LFO) of the contact-line voltage amplitude, which can lead to a power outage of the traction substation and the shutdown of train traffic. Several system parameters can influence the low frequency stability of the railway traction power system, including contact-line length and traction unit parameters such as transformer leakage inductance, DC-link capacitance, control bandwidths and synchronization systems. This paper focuses on the influence of these parameters on the LFO. The methodology is based on a frequency-domain analysis. Nyquist and Bode diagrams are used to determine the stability limit. The validation of the method is performed through the use of time-domain simulations.
- Subjects
FREQUENCY stability; RAILROADS; NYQUIST diagram; FREQUENCIES of oscillating systems; FREQUENCY-domain analysis; CATALYTIC converters for automobiles
- Publication
Electronics (2079-9292), 2022, Vol 11, Issue 10, pN.PAG
- ISSN
2079-9292
- Publication type
Article
- DOI
10.3390/electronics11101593