Purpose. Improving the efficiency of passenger traffic on non-electrified sections railway Ukraine by optimizing structure and creating principles for building a traction electric drive promising autonomous train powered engines from system onboard storage electricity. Methods. The methodological basis study are general theoretical provisions approach electrical engineering, mechanics, theory m...

Addressing the shortcomings of existing low-frequency oscillation research on electrified railways, which has mainly focused single-type trains and lacks accurate modeling traction inverter systems, in this paper we modeled analyzed oscillations an railway passenger freight mixed-operation vehicle–grid system. First, equivalent model DC side was established, with system being to parallel connec...

AC railway traction loads are usually huge single phase loads. As a result, a significant amount of Negative Sequence Current (NSC) is injected into utility grid. Moreover, harmonics and consumption ofreactive power are further power quality problems that the supply network is encountering. In this paper, acompensation strategy with the aid of Railway Power Conditioner (RPC) is proposed to over...

The coming intersection between a growing electrified vehicle fleet and desired growth in renewable electricity generation presents an opportunity for synergistic value. Some types of renewable electricity generation are variable and intermittent and are rarely coincident with utility load patterns. Vehicles are typically parked 90% of the time, and the batteries are a significant capital inves...

Understanding electrified interfaces is crucial to enabling a multitude of applications, including photo(electrocatalysis), supercapacitors, pseudocapacitors and batteries. However, reaching an atomistic understanding remains challenging will require the combination development refined computations experiments.

Abstract Occurrences of sentences that are traditionally considered category mistakes, such as ‘The red number is divisible by three’, tend to elicit a sense oddness in assessors. In attempting explain this oddness, existing accounts the philosophical literature commonly claim occurrences associated with defect or phenomenology unique class mistakes. It might be thought recent work experimental...

the main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. therefore, railway track desig...

As the transport sector is ought to be decarbonized, fuel-cell-powered trains are a viable zero-tailpipe technology alternative widely employed diesel multiple units in regional railway service on non-electrified tracks. Carbon-free hydrogen can provided by water-electrolysis from renewable energies. In this study we introduce an approach assess potential of wind-based for use adjacent rail app...