TOSHIBA G9000 UPS White Paper
© 2008 TOSHIBA INTERNATIONAL CORPORATION – INDUSTRIAL DIVISION
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/toshiba02/User2/UPSMKT/GENERAL/UPS/3 Phase Systems/White Papers/G9000 White Paper - multi-level converter.doc
UPSG9000WP081201
G9000 UPS Benefits
As the world’s first three-level uninterruptible power supply, the G9000
UPS is the wise response from Toshiba to the growing demand for high
reliability and efficient power solution for mission-critical applications. Its
innovative three-level circuit concept and exclusive power module delivers
superior performance and reliability, updates industrial electronics
technology and reduces cost of ownership with its green-oriented features.
The many benefits of the G9000 UPS include:
n
Industry-leading and up-to-date power electronics technology
The G9000 UPS is the most advanced uninterruptible power supply.
Advances comprise all the three levels in power electronics: circuits,
components, and systems. The innovative three-level circuit concept
is a milestone in the UPS industry, which has stagnated to the
conventional two-level topology. The exclusive power module has
become a key component to make the multilevel concept even more
attractive. In terms of advances in systems, DSP
4
-based fully digital
control ensures superior performance to meet modern industry
demands and standards. In addition, The G9000 UPS introduces a
cross current sensor less control for parallelism of multiple modules.
This new technology eases the system expansion toward a redundant
high-reliability configuration.
n
Green-oriented design
With an unmatched efficiency of 96.5% at full load, The G9000 UPS
is the greenest double-conversion UPS on market while competitors
barely reaches 95%. This high efficiency leads to significant energy
savings as well as reduction of the carbon footprint. To illustrate the
amount of energy savings, consider two 225-kVA systems running at
40% load. The impressive double conversion efficiency curve (Figure
13) of the G9000 UPS shows >96% efficiency even at this load
percentage. In this case, an increase of 1% in efficiency represents
4
Digital signal processor
G9000
UPS includes
advances in all the
three levels in power
electronics: circuits,
components and
systems.
G9000 UPS features
industry -leading
double conversion
efficiency (>96%).
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