7/25/2019 Applying Variable Speed Drives to Control Pressure
1/4
Applying Variable Speed Drives ToControl Pressure
Applying Variable Speed Drives To Control Press ure (on photo: ABB 's Variable Speed Drives credit:
bacnetinternational.net)
Pressure Control Pump Station //
Using variable speed drives (VSDs) to control pressure reduces the electrical
energy requirements .
A basic pressure control pump station is equipped with one pump controlled by one
variable speed drive (VSD). In some pump stations, pumps connected in parallel
are a more efficient solution. Several parallel pumps can be controlled with one
VSD controlling the master pump and contactors switching the other pumps on and
off.
Figure 1 shows a set-up with parallel pumps using one drive to control three
pumps.
Figure 1 Pressure control of a pumping system with one variable speed
drive (VSD)
by reducing the amount of hydraulic energy actually produced
SHARE
https://plus.google.com/share?url=http://electrical-engineering-portal.com/applying-variable-speed-drives-to-control-pressurehttp://electrical-engineering-portal.com/applying-variable-speed-drives-to-control-pressurehttp://electrical-engineering-portal.com/applying-variable-speed-drives-to-control-pressurehttp://www.printfriendly.com/http://www.linkedin.com/shareArticle?mini=true&url=http://electrical-engineering-portal.com/applying-variable-speed-drives-to-control-pressure&title=Applying%20Variable%20Speed%20Drives%20To%20Control%20Pressure&summary=&source=EEP%20%E2%80%93%20Electrical%20Engineering%20Portalhttps://plus.google.com/share?url=http://electrical-engineering-portal.com/applying-variable-speed-drives-to-control-pressurehttp://www.facebook.com/sharer.php?u=http://electrical-engineering-portal.com/applying-variable-speed-drives-to-control-pressure&t=Applying%20Variable%20Speed%20Drives%20To%20Control%20Pressure%20|%20EEPhttp://twitter.com/intent/tweet?original_referer=&text=Applying%20Variable%20Speed%20Drives%20To%20Control%20Pressure%20-&url=http://electrical-engineering-portal.com/applying-variable-speed-drives-to-control-pressurehttp://electrical-engineering-portal.com/14-energy-efficiency-improvement-opportunities-in-pumping-systemshttp://electrical-engineering-portal.com/applying-variable-speed-drives-to-control-pressure7/25/2019 Applying Variable Speed Drives to Control Pressure
2/4
SystemRedundancy
To guarantee
pump
operation, even
when a fault
occurs, the
pump system
needs
redundancy. In
pump stations
this means that
a failure of one
pump, motor or
drive in aparallel
installation does
not cause a
process interruption but the operation will continue with a limited capacity.
In order to have a replacement for a failed unit, a parallel system is needed! This
means that each pump is controlled by an industrial drive for pump control.
Drives share information such as status of the
drive, priority, running time, process feedback,
etc. through a fiber optic link.
In a ring connection implemented with fiber optics it is possible to define the actions
for the drives in the event of failure of the optical link in order to achieve 100%
redundancy. No PLC is needed.
Figure 2 shows a system loop with three industrial drives in ring connection
controlling three pumps.
Figure 2 Pressure control with three industrial drives
Might be interesting for you to try free Pump Efficiency Calculation Tool(MS
7/25/2019 Applying Variable Speed Drives to Control Pressure
3/4
Excel
Spreadsheet).
Pump Efficiency Calculation Tool
Reference // ABB Application guide No. 2 Using variable speed drives (VSDs) in
pump applications
DOWNLOAD TOOL
http://electrical-engineering-portal.com/download-center/electrical-software/pump-efficiency-calculation7/25/2019 Applying Variable Speed Drives to Control Pressure
4/4
Share with engineers //
Recommended EE stuff //
About Author //
Edvard Csanyi
Edvard- Electrical engineer, programmer and founder of
EEP. Highly specialized for design of LV high power busbar
trunking (