Win Inertia Incorporates Maxwell Technologies Ultracapacitors for Braking Energy Recuperation in Spanish Rail System

  Win Inertia Incorporates Maxwell Technologies Ultracapacitors for Braking
                  Energy Recuperation in Spanish Rail System

High-Efficiency Hybrid Energy Storage System Reduces Energy Consumption;
Excess Power Used to Charge Electric Vehicles

PR Newswire

SAN DIEGO, Aug. 19, 2014

SAN DIEGO, Aug. 19, 2014 /PRNewswire/ -- Maxwell Technologies, Inc. (Nasdaq:
MXWL) announced today that Win Inertia, an engineering firm specializing in
power electronics, energy storage and control and communication systems, is
using its ultracapacitors for a stationary wayside braking energy recuperation
system at an electric rail system in Cerro Negro, Spain. Win Inertia designed
and installed the system under a contract with the Spanish government's
Administrator of Railway Infrastructures (ADIF). In this installation, the
system also enables ADIF to store excess energy in a battery bank that
supplies an electric vehicle (EV) charging station located at the rail
station. The facility also seamlessly integrated a photovoltaic (PV) generator
to supply additional energy if required.

Enabling Energy's Future

The recuperation system employs Win Inertia's SHAD® hybrid control technology
(international patent pending) to integrate batteries and Maxwell
ultracapacitors to increase energy recovery efficiency and reduce stress on
the batteries, thereby extending battery life. Ultracapacitors' rapid
charge/discharge characteristics uniquely enable them to capture and store
more energy during each braking event than battery-based systems, which have
limited ability to absorb energy in the few seconds required to stop a
vehicle. Win Inertia's high-efficiency hybrid energy storage and power
delivery system furthers ADIF's return on investment as it enables dual use of
the recuperated energy for rail vehicle propulsion and EV charging. By
converting kinetic energy into stored electric energy through regenerative
braking, the system recovers 8 to 10 percent of the total energy used by the
railway system, which is then used to power the EV charging station.

"By incorporating ultracapacitors, which accept charge from the braking energy
recuperation system much more efficiently than batteries, the system recovers
significantly more energy," said Eugenio Domínguez Amarillo, Win Inertia's CEO
and chief technology officer (CTO). "Additionally, by using ultracapacitors to
relieve the batteries of the stress of repetitive cycling, we expect to extend
battery life by 20 to 25 percent."

Braking energy recuperation systems in electric and hybrid rail vehicles save
fuel and electrical energy by using resistance from the electric motor to stop
the vehicle, and, through that process, converting kinetic energy that would
be wasted in a conventional friction-based braking system into stored
electrical energy. Ultracapacitors' high reliability and extremely long
operational life also make them a preferred option for heavy cycling electric
utility grid applications.

Dr. Franz Fink, Maxwell's president and CEO, said, "Transportation is the
world's largest energy consumer, so systems that enhance energy efficiency and
reduce fossil fuel consumption and emissions can play a transformational role
in energy management and create tremendous long-term growth opportunities for
rapidly advancing ultracapacitor technology."

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 degrees C to +65 degrees C), 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 160 volts. For more
information on Maxwell's ultracapacitor products, please visit

About Win Inertia: Win Inertia is a high-tech engineering company, highly
specialized in power electronics, energy storage and control and communication
systems applied to renewable energy integration and energy efficiency. The
company's most innovative technology is a hybrid energy storage system
integrating ultracapacitors, batteries and other storage technologies such as
flywheels and fuel-cells under a unique bus using its technology (SHAD-FS4G).
Thus, a high performance in terms of power and energy density is achieved. The
control and power electronics technology applied in the system extend the
battery life and avoid over-sizing of the storage system, decreasing
investment and operation costs. The system can be applied in a variety of
fields such as weak grid stabilization, grid services, renewable energy
integration and transportation. For more information, please visit the

About ADIF: ADIF is the state-owned Administrator of Railway Infrastructures
in Spain. ADIF plays a leading role in promoting the railway sector, working
toward converting it into the ideal mode of transport and facilitating access
to the infrastructure under fair conditions. Its aim is to promote the Spanish
railway system by means of the development and management of a safe, efficient
and sustainable infrastructure to the highest quality standards in
environmental terms. ADIF is in charge of administrating rail infrastructures
(tracks, stations, freight terminals, etc.), managing rail traffic,
distributing capacity to rail operators and the collection of fees for
infrastructure, station and freight terminal use. For more information, please
visit the website:

About Maxwell: Maxwell is a global leader in the development and manufacture
of innovative, cost-effective energy storage and power delivery solutions. Our
ultracapacitor products provide safe and reliable power solutions for
applications in consumer and industrial electronics, transportation and
telecommunications. Our high-voltage grading and coupling capacitors help to
ensure the safety and reliability of electric utility infrastructure and other
applications involving transport, distribution and measurement of high-voltage
electrical energy. Our radiation-mitigated microelectronic products include
power modules, memory modules and single board computers that incorporate
powerful commercial silicon for superior performance and high reliability in
aerospace applications. For more information, please visit our website:

Win Inertia Contact:
Media & Sales: Rafael Gonzalez, +34 954 173 085;
Investor: Eugenio Dominguez, +34 954 173 085;

Maxwell Technologies Contacts:
Media: Sylvie Tse, Metis Communications: +1 (617) 236-0500;
Investor: Michael Sund: +1 (858) 503-3233;
Sales & Technical: Stefan Strohmayer: +49 89 4161403 13;


SOURCE Maxwell Technologies, Inc.

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