How does an active filter work?

The SMARCTIVE is part of the Active Power Filter (APF) family, a type of electrical device that uses advanced electronics to correct a wide variety of power quality problems.  

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What is the main application of an active harmonic filter (APF)? 

Active harmonic filters (APFs) are primarily used in industrial and commercial power systems to reduce harmonic distortion caused by nonlinear loads, such as variable frequency drives (VFDs), inverters, and rectifiers. These nonlinear loads create harmonic currents that can cause problems such as power factor penalties, increased heating in equipment and transformers, and even equipment failure. 

APFs are used to mitigate these problems by injecting a compensation current into the system that is out of phase with the harmonic currents, effectively canceling them out. This improves power quality and increases overall system efficiency. 

In addition, APFs can also be used to improve the performance of distributed generation systems, such as solar PV and wind power systems, to meet grid connection standards and improve grid power quality. 

In general, while the main application of an active harmonic filter is to reduce harmonic distortion in electrical power systems caused by non-linear loads and improve power quality, they are also the most complete solution to counteract other power quality problems such as low power factor, voltage unbalance and poor voltage regulation, as well as flicker.  
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At Diram we have active filters and other products to optimize your current operation and implement a medium or low voltage solution that is in regulatory compliance. Contact our consultants to review the needs of your plant and recommend the best option for you.