Inverter Operating Characteristics Optimization for DC Traction Power Supply Systems

Abstract

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Non‐linear switched model for accurate voltage estimation and power flow analysis of DC railway systems

“…In such a case, on‐board ESS can offer off‐grid traction possibilities. More details about such technologies and other examples are in [5–16].…”

“…Nevertheless, simplifications leading to an equivalent catenary system for the two directions are often considered (Fig. 7 b ) [5–20]. This simplified model assumes that all the subsystems are supplied by a common catenary, thus reducing the number of nodes to consider.…”

“…[3, 4] and improving the infrastructure. Different solutions are, therefore, envisaged such as reversible traction power substations (TPSs) [5–8], energy storage systems (ESSs) [2, 8–16], or renewable energies [16]. Optimisation techniques are also often used to improve the operation of specific subsystems (i.e.…”

“…Optimisation techniques are also often used to improve the operation of specific subsystems (i.e. control of reversible TPS or ESS) [5, 8, 10] or the entire railway system. Indeed, the choice of a specific solution, its design, placement, and sizing, and evaluation of economic interest are complex tasks.…”

“…However, most simulation tools simplify this second phenomenon and only consider the increase in voltage due to the resistive part of the DCTN [19]. This problem is generally solved by considering reversible TPS or ESS [5–16], which contribute to improving receptivity. Other works aiming at estimating the energy consumption neglect this phenomenon because it occurs when all the TPSs are blocked, which do not lead to a significant error on global energy consumption [24].…”