VTdrive Variable Speed Drive(VSD) Solutions for Low Harmonics0 pages

VTdrive Variable Speed Drive Solutions for Low Harmonics
Harmonics – A Growing Concern For Customers
Harmonics are deviations from the ideal sinusoidal AC line voltage and current waveforms. These distortions are typically low in
magnitude and can have an impact on the performance of your connected devices. With the advent of power electronics, non-linear
loads and power switching devices such as Variable Speed Drives (VSDs), there is concern for a potential increase in the level
of harmonic distortion conducted back onto the utility power lines.

Potentially Compromising
Harmonic distortion can impact your electrical systems in a number of ways:
Conductor insulation overheating, higher temperature rise in transformers
and motors resulting in shorter life, and instrumentation signal interference.
Depending on your facility and the system parameters, these issues may
have a significant effect on various elements of your installation. Facility
engineers need to determine if, how and where to mitigate harmonic
distortion in the power distribution system to reduce the risk of any serious
consequences.

Staightforward Solutions
Fortunately, reducing harmonic distortion to acceptable limits is
easily attainable. The Institute of Electrical and Electronics
Engineers (IEEE) has created guidelines that set reasonable limits
for harmonic current and voltage distortion for various systems and
locations (IEEE 519-1992). Many software calculation programs are
also available for you to help predict the level of harmonic content
and
determine the mitigation requirements for your installation.

VTdrive® has the Answer
By applying the appropriate technology, the effects of harmonics can be
reduced, thereby minimizing the effects of potential damage to your assets.
VTdrive offers a variety of low and medium voltage VFD options in small
foot- print packages, engineered to minimize harmonic distortion at the
source. Several proven harmonic mitigation techniques are available to
meet your requirements for budget, space limitations and harmonic
attenuation. VTdrive has a proven track record and large installed base of
low harmonic VFDs in various industrial and commercial applications.
These technologies include 18-pulse and active front-end converters
as well as both active and passive filters, employed to minimize
harmonics and adhere to IEEE 519-1992 standards.