Rail

Maxwell's ultracapacitor usage expanded in Korea

Posted on February 26, 2014

Maxwell Technologies’ ultracapacitors enabled Woojin Industrial Systems, a manufacturer of electric rail vehicles and rail system equipment, to complete installation of its energy storage system (ESS) ultracapacitor-based braking energy recuperation systems in seven Metro stations in Seoul, Daejon, Incheon and the Korea Train eXpress (KTX) high-speed rail depot in Seoul.

Beginning with installation of demonstration systems in 2009 under a contract with the Korean federal government's Korean Railroad Research Institute (KRRI), Woojin and rail system operators have achieved grid power consumption savings of more than 20% and realized additional benefits in the form of system voltage stabilization, which reduces power infrastructure requirements and helps to ensure uninterrupted operation.

The recuperation systems, ranging from 750 to 1,500 volts, employ Maxwell Technolgies ultracapacitors to absorb energy during rail vehicle braking and deliver the stored energy to the vehicles' electric motors for propulsion and to stabilize voltage throughout the system.

Each installation employs up to 200 of Maxwell's 48-volt multi-cell ultracapacitor modules. Based on their positive experience to date, Woojin and rail system operators are planning several additional installations in 2014 and 2015.

Unlike batteries, which produce and store energy by means of a chemical reaction, ultracapacitors store energy in an electric field. This electrostatic energy storage mechanism enables ultracapacitors to charge and discharge in as little as fractions of a second, perform normally over a broad temperature range (-40 to +65 degrees Celsius), operate reliably through one million or more charge/discharge cycles and resist shock and vibration.

Maxwell offers ultracapacitor cells ranging in capacitance from one to 3,000 farads and multi-cell modules ranging from 16 to 125 volts.

View comments or post a comment on this story. (0 Comments)

More News

$8.2B invested along 20 miles of Valley Metro light rail

Economic development within one-half mile of the system has been stimulated by ridership that has exceeded original projections. Valley Metro began compiling development activity since construction started in 2005 as part of an economic development database.

Alstom to deliver 17 trains to Algeria

The Coradia Polyvalent for Algeria is a dual-mode train (diesel and electric, 25 kV) able to travel at speeds up to 99 mph. The train has six carriages and provides capacity for 265 passengers.

Fla.'s TriRail adds bike car

The new bike car contains 14 racks that will provide more room to maneuver bicycles on and off the train. A set of seats were removed from the lower level of the vehicle to make room for the bike racks.

Denver commuter rail maintenance facility Gold LEED certified

Sustainable features of the CRMF include efficient mechanics and lights for energy savings, water-efficient plumbing fixtures for reduction in water usage and specially designed windows that prevent thermal transfer.

US High Speed Rail launches TOD Institute, conference

Will work to increase the supply of new TODs and rail systems across America and will be holding a series of national and local events bringing together business and political leaders with planners and experts to advance knowledge sharing and project deal making.

See More News

Post a Comment

Post Comment

Comments (0)

More From The World's Largest Fleet Publisher

Automotive Fleet

The Car and truck fleet and leasing management magazine

Business Fleet

managing 10-50 company vehicles

Fleet Financials

Executive vehicle management

Government Fleet

managing public sector vehicles & equipment

TruckingInfo.com

THE COMMERCIAL TRUCK INDUSTRY’S MOST IN-DEPTH INFORMATION SOURCE

Work Truck Magazine

The resource for managers of class 1-7 truck Fleets

Schoolbus Fleet

Serving school transportation professionals in the U.S. and Canada

LCT Magazine

Global Resource For Limousine and Bus Transportation

Please sign in or register to .    Close