Rail

Bombardier selects Maxwell ultracapacitors for energy storage

Posted on January 19, 2012

Bombardier Transportation has selected Maxwell Technologies Inc. ultracapacitors as the energy storage element of the Bombardier  EnerGstor braking energy recuperation system.

Each stationary “wayside” EnerGstor unit incorporates an ultracapacitor array that is capable of storing up to two kilowatt hours of electrical energy generated by a rail vehicle’s braking energy recuperation system. 

Recuperative braking is accomplished by running the vehicle’s electric motor backwards to stop the vehicle with the motor’s resistance. An electric motor running backwards also acts as an electric energy generator or dynamo that converts kinetic energy into electrical energy that can be stored for future use.

The EnerGstor system offers multiple benefits to rail system operators, including:

• A 20 to 30% reduction in grid power consumption.

• Improved regulation of line voltage across a multi-stop rail system.

• Significant reduction in brake maintenance expense.

• Backup power to enable vehicles to reach a station in the event of a grid power failure.

The ultracapacitor-based energy storage unit captures and stores energy that otherwise would be wasted in a conventional, friction-based, braking system. Ultracapacitors also provide extremely long operational life in the demanding public transit environment and function normally at extreme temperatures, contributing to system reliability and reduced operating expenses.

Maxwell ultracapacitors are powering more than 4,500 hybrid transit buses currently in service worldwide, and are being employed in several other transportation applications, including a stop-start idle elimination system developed by Continental AG for micro hybrid diesel automobiles now being produced by PSA Peugeot Citroën in Europe.

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°C), operate reliably through one million or more charge/discharge cycles and resist shock and vibration, according to the company.

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

Alstom, Bombardier deliver 100th MI09 French trainset

Every MI09 can transport up to 2,600 passengers at maximum speeds of approximately 75 miles per hour. Each train is made up of five cars, each equipped with three large doors on either side to facilitate passenger exchange in the stations.

How transportation played key role in transformation of Milan

The Brussels based UITP’s World Congress is the major global gathering of the world’s public transport industry to network, review progress and innovation, understand trends from suppliers as well as focus on the challenges that public transport faces in delivering a viable, sustainable future for the world.

Calif.'s SMART secures $11 million grant to buy 3 more railcars

The three additional cars will boost SMART’s seating capacity by 35%, officials said. Because of the escalating costs for railcars, the grant also was estimated to have saved taxpayers about $11 million, according to state officials,

Parsons Brinckerhoff under contract to deliver Calif. high-speed rail

Will begin work on a seven-year, $700 million rail delivery partner contract awarded by the California High-Speed Rail Authority earlier this month.

Alstom to supply 13 Coradia Lint regional trains to Danish network

The Coradia Lint 41 is an environmentally-friendly low-consumption Diesel Multiple Unit that can reach a maximum operating speed of up to 87 mph.

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