While there has been a growing amount of research on modelling and active control of pantograph-catenary systems (PCSs) for stable current collection of electrified rail vehicles, the coupled nature of the pantograph and PCS dynamics has not been explicitly addressed. This work provides a comprehensive illustration of states and their interactions in the vertical degree-of-freedom of coupled PCSs. A displacement-dependent contact wire mass is coupled to its vertical displacement for a more realistic wire behaviour. Conditional masses, one-way damping, and equal and opposite characteristics of the contact force have been modelled for enhanced PCS interaction modelling and contact force control. The geometric contact kinematics has been derived to solve for the vertical wire displacement. The formulation of contact force/position control objectives is presented for the resulting system and is applicable to similar class of systems. Simulation results show that the contact force from typical passive pantographs is lower than desired values and they take longer to stabilize from contact losses. In contrast, a PI controller for an active pantograph setup can better handle initial contact gaps and regulate the resulting contact force to the desired value.
Coupled Models with Contact Kinematics for Pantograph-Catenary Systems
Lect.Notes Mechanical Engineering
The IAVSD International Symposium on Dynamics of Vehicles on Roads and Tracks ; 2021 August 17, 2021 - August 19, 2021
2022-08-06
11 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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