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9 kV. result, ABB
has the largest installed base medium voltage
multidrives worldwide.
The very high power density the PEBB is
based the use snubberless IGCTs, enabling
reduced parts count and compact mechanical
arrangement.
Motor-friendly with low parts count
In order get sinusoidal voltage the motor,
the number switching levels would have to
approach infinity. However, too many switching
levels decrease reliability and efficiency
because the number components increases. replaces com plex
power electronics circuits with single, multi
function device.
Compared other available solutions, the
VSI-MF topology provides num ber of
advantages:
Higher power density and smaller footprint
Smooth output waveform suitable for
standard motors
ABB ACS 5000.
In 1999 ABB launched the ACS 6000, the first
PEBB-based variable speed drive for single and
multi-motor applications.
By combining power electronic building blocks
higher voltages can reached, enabling reliable
and efficient operation motors 6.
VSI-MF topology
Based the successes the IGCT and PEBB
technologies, ABB developed the Voltage Source
Inverter Multilevel-Fuseless (VSI-MF) topology.
The ACS 5000 topology provides the optimal
solution because has enough switching levels
to enable the use standard motors while at
the same time keeping the parts count a
minimum. result, the size for complete
system for given pow rating has been
reduced compared other available
solutions.PEBB
The heart the inverter the Power Electronic
Building Block (PEBB). Since its introduction,
the ACS 6000 has gained excellent reputation
for high quality and reliability
