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portada Baseline Testing of Ultracapacitors for the Next Generation Launch Technology (Nglt) Project
Type
Physical Book
Author
Publisher
Language
English
Pages
28
Format
Paperback
Dimensions
24.6x18.9x0.2 cm
Weight
0.07 kg.
ISBN13
9781289148041
Categories

Baseline Testing of Ultracapacitors for the Next Generation Launch Technology (Nglt) Project

Nasa Technical Reports Server (Ntrs) (Author) · Dennis J. Eichenberg (Author) · Bibliogov · Paperback

Baseline Testing of Ultracapacitors for the Next Generation Launch Technology (Nglt) Project - Eichenberg, Dennis J. ; Nasa Technical Reports Server (Ntrs)

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Synopsis "Baseline Testing of Ultracapacitors for the Next Generation Launch Technology (Nglt) Project"

The NASA John H. Glenn Research Center initiated baseline testing of ultracapacitors for the Next Generation Launch Transportation (NGLT) project to obtain empirical data for determining the feasibility of using ultracapacitors for the project. There are large transient loads associated with NGLT that require either a very large primary energy source or an energy storage system. The primary power source used for these tests is a proton exchange membrane (PEM) fuel cell. The energy storage system can consist of devices such as batteries, flywheels, or ultracapacitors. Ultracapacitors were used for these tests. Ultracapacitors are ideal for applications such as NGLT where long life, maintenance-free operation, and excellent low-temperature performance is essential. State-of-the-art symmetric ultracapacitors were used for these tests. The ultracapacitors were interconnected in an innovative configuration to minimize interconnection impedance. PEM fuel cells provide excellent energy density, but not good power density. Ultracapacitors provide excellent power density, but not good energy density. The combination of PEM fuel cells and ultracapacitors provides a power source with excellent energy density and power density. The life of PEM fuel cells is shortened significantly by large transient loads. Ultracapacitors used in conjunction with PEM fuel cells reduce the transient loads applied to the fuel cell, and thus appreciably improves its life. PEM fuel cells were tested with and without ultracapacitors, to determine the benefits of ultracapacitors. The report concludes that the implementation of symmetric ultracapacitors in the NGLT power system can provide significant improvements in power system performance and reliability.

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