Utility Battery Storage Systems Program plan: FY 1994--FY 1998 Page: 36 of 47
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Finally, as mentioned earlier, when prototype
engineering of the sodium/sulfur and/or zinc/
bromine technologies is proceeding, periodic
assessments will be made to determine whether
any emerging advanced technologies (e.g., lith-
lum-based, nickel/metal-hydride) are promising
for utility applications. If a positive recommenda-
tion results from these assessments, an imple-
mentation strategy will be considered.
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System requirements will be examined in this
subelement to determine how designs of the
electrical components are impacted. These com-
ponents include the PCS and the control system,
Novel techniques will be sought to improve the
performance and reduce the costs of these
components.
Efforts will be made to reduce or eliminate
costly one-of-a-kind engineering. All utility bat-
tery energy storage projects undertaken to date
have used custom-built, one-of-a-kind PCSs
because of the lack of a commercially available,
off-the-shelf PCS subsystem. Consequently, PCS
costs have been high and, at present, constitute a
major portion of the overall BES system cost,
but rapid advances in power electronics technol-
ogy hold great potential in reducing the cost and
footprint of the PCS subsystem, if they are
aggressively applied to the BBS system. Until
recently, there has been little interaction between
power conversion system suppliers, electric
utilities, and battery manufacturers to foster the
development of standard, state-of-the-art PCS
designs that could offer lower subsystem costs.
Recent UBS activities in this area have been pri-
mariiy responsible for starting such interchanges
and facilitating PCS development. Continued
interactions and an active hardware development
and demonstration activity are needed to sustainExhiat 47. TNIs icnaomkne better dWoped
by Johnson Controls Oattery Group, Inc., is a
15-kWh unit consostIng of two 0-ceI praNel
simos and is being tetedt SM .
this interchange and ensure that it leads to the
timely availability of the desired hardware.
Specific actions for the near term include
conducting a workshop with companies and
researchers involved in batteries, power condi-
tioning equipment, and renewable technologies
to formulate application requirements and
development plans. The development plans will
then be used to focus the UBS Program activities
toward cooperative projects with industry
to produce cost-effective and versatile PCS
subsystems.37
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Utility Battery Storage Systems Program plan: FY 1994--FY 1998, report, February 1, 1994; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1314734/m1/36/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.