Variable frequency drive (VFD) technology has been available for motor drive
applications for many years. In the water works industry, one primary application
of this technology is the maintenance of pressures within a water distribution
system over a wide range of flows. VFDs may also be utilized to limit hydraulic
surges, dampen the effects of varying suction pressure, accommodate widely
varying demands on the discharge side of a pump station, as well as pace chemical
feed equipment for accurate chemical feed dosages over a wide range of flows. The
primary goal of this paper is to provide water system managers, operators, and
engineers, with a straightforward summary overview of present day, in place,
workable, motor control technologies. The paper reveiws some successful working
applications associated with the pumping of water in the context of improved
water works system control. Proper pump control technology is applicable to all
liquid pumping applications. In the water works industry, this may include
installations associated with source of supply, water treatment, high service
pumping, and re-pumping through water booster stations. It should also be noted
that this technology is by no means restricted to large water systems. There are
numerous VFD applications used in small public and/or community water systems. Includes figure.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 96 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 01/01/1999 |
