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

LA Metro unveils new tunnel boring machine named Angeli

At the event Board Chair Fasana awarded TAP Cards to students who won contests to name the TBM and create an illustration for its tail shield.

Bombardier confirms progress on turnaround plan

The actions support the company’s efforts to build its earnings growth potential and highlight its focus on improving productivity, reducing costs, and optimizing its worldwide footprint to deliver increased value to customers and shareholders.

BYD enters mass transit market with low-cost train

The light rail technology is applicable to small and medium-sized cities, heavy traffic routes, CBD’s and routes connecting tourist attractions in large cities, according to the company.

MBTA forgives $839K in fines stemming from 2015 winter performance

According to the report, the company said that the forgiven fines regarded maintenance issues, and that the MBTA agreed to waive them amid evidence that maintenance workers were pulled from their regular jobs to help shovel off tracks and shorten delays.

Brookville set to deliver second QLine streetcar

Each red and white streetcar will seat 125 passengers and feature Wi-Fi, vertical bicycle racks, and an HVAC unit. M-1 officials said that its delivery schedule and testing remain on schedule, with track testing set to begin later this fall.

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



Work Truck Magazine

The number 1 resource for vocational 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