Handbook of Energy Storage for Transmission or ... - W2agz.com

EPRI Proprietary Licensed Material
Figure 5 Elit capacitor 0.8 F, 310 V, 19 kg (six inch ruler also shown)
EPCOS
EPCOS licensed electrochemical capacitor technology from Maxwell Technologies in the
late 1990’s and offered identical products to the European market for several years. They
now have developed a new family of products, which range from 1000 F to 5000 F at 2.3
V or 2.5 V. EPCOS capacitors are type II products with accordion-fold carbon cloth or,
for the new family, spiral-wound pasted carbon construction. Some contain acetonitrile in
their electrolyte. Some have both terminals at one end of the package, but their newer
products have a terminal at each end. EPCOS capacitors (of this new design only) are
available in North America through their Munich, Germany office.
Figure 6 EPCOS family of EC capacitors and modules from 5000F at 2.5V to 150F at 42 V
ESMA
ESMA products were first described in the US during a conference presentation in 1997.
Photographs of buses and trucks that were powered solely by electrochemical capacitors
were shown. Many members of the audience missed the point that these vehicles actually
had no batteries or an engine, only capacitor energy storage. These vehicles stored
approximately 30 MJ of energy in capacitors, perhaps the largest-size capacitor system
Electrochemical Capacitors 27