IEEE Electrification Magazine - September 2014 - 3

"Power-Quality Improvement in AC
regenerative braking systems, which
Railway Substations" shows some of
allow the kinetic energy lost by the train
these advances. Also related to the
when braking to be recovered. This has
infrastructure, "A Cata significant impact on
enary-Free Electrifithe final energy conThe development of
cation for Urban
sumption balance and,
the power electronics
Transport" describes
consequently, the elecand the control
the adaptation projtricity bill. The articles
technologies have
ect of a tramway to a
"Riding the Rails to DC
ground-level catenaPower Efficiency" and
been key factors to
ry. Finally, the article
"Energy Harvesting for
achieve the
"Stray-Current Corrothe Electrification of
performance railways
sion and Mitigation"
Railway Stations" discan deliver today.
describes how the
cuss different issues
problems due to
related to the usage of
stray-current-related
the regenerative brakcorrosion are managed in railway
ing dc and ac railways.
infrastructures today.
Currently, one of the main chalAn important milestone in railway
lenges for electrified railways is the
electrification was the introduction of
development of the next-generation

railway electrical smart grids. The
degree of automation provided by
these technologies will achieve
significant improvements in the
controllability of the railway electrification, leading to better quality
indexes (essentially, more reliability
and higher energy efficiency). "Railway Electrical Smart Grids" introduces some of the key concepts of
these networks.
For this special issue, we have
tried to include different kinds of
articles, covering a wide range of topics related to railway electrification. If
you want to submit an article or if
you want a specific topic to be
addressed in future issues, please
contact us at electrification@ieee.org.

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Table of Contents for the Digital Edition of IEEE Electrification Magazine - September 2014