IEEE Electrification Magazine - September 2014 - 1

IEEE

VOL. 2, NO. 3

SEPTEMBER 2014

ISSN 2325-5987

WWW.IEEE-PES.ORG/

MAGAZINE

F E AT U R E S
Power-Quality
Improvement in AC
Railway Substations

A Catenary-Free
Electrification for
Urban Transport

Energy efficiency in
dc-electrified metropolitan
railways.

The concept of choppercontrolled impedance.

An overview of the
tramwave system.

Stray-Current Corrosion
and Mitigation

Riding the Rails
to DC Power Efficiency

Energy Harvesting
for the Electrification
of Railway Stations

Getting a charge from the
regenerative braking of trains.

A synopsis of the technical
methods used in dc transit
systems.

Railway Electrical
Smart Grids

An introduction to nextgeneration railway power
systems and their operation.

D E PA R T M E N T S & C O L U M N S
2
4
56
58
64

ABOUT THIS ISSUE
TECHNOLOGY LEADERS
DATES AHEAD
NEWSFEED
VIEWPOINT

Substation
Losses

Rectified

Useful
Regenerated

Power Chain
Electrical
Losses "Go"

Ohmic
Losses

Mechanical
Losses
Flowing
Traction
Through Absorbed
from
Catenary
Catenary

Regenerated
Back
to Catenary
Regenerated to Auxiliary

Rheostat
Losses

Auxiliary
Services

Regenerated

Power Chain
Electrical
Losses "Return"

A dc-electrified railway system Sankey diagram.
Page 32

Digital Object Identifier 10.1109/MELE.2014.2342832

A catenary-free electrification for urban
transport. Page 16
Cover image: Examining the advances in
railway electrification.
Image courtesy of Eduardo Pilo de la Fuente.
MISSION STATEMENT: IEEE Electrification
Magazine is dedicated to disseminating information on all matters related to microgrids
onboard electric vehicles, ships, trains, planes,
and off-grid applications. Microgrids refer to an
electric network in a car, a ship, a plane or an
electric train, which has a limited number of
sources and multiple loads. Off-grid applications include small scale electricity supply in
areas away from high voltage power networks.
Feature articles focus on advanced concepts,
technologies, and practices associated with all
aspects of electrification in the transportation
and off-grid sectors from a technical perspective in synergy with nontechnical areas such as
business, environmental, and social concerns.
IEEE Electrification Magazine (ISSN 2325-5987)
(IEMECM) is published quarterly by the Institute of
Electrical and Electronics Engineers, Inc.
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Table of Contents for the Digital Edition of IEEE Electrification Magazine - September 2014