Active harmonic filters

Compensation for high energy supply quality is common
Compensation for displacement reactive power caused by linear loads has been applied since the use of uncontrolled three-phase machines to ensure an optimum energy supply. Their inductive influences are compensated by capacitors at the respective transformer stations with compensation systems in order to support a high quality of the energy supply.

Demand-based compensation increases efficiency
With the further development of highly efficient controlled machines, systems and devices, so-called non-linear consumers, the characteristics of energy consumption have also changed. In addition to displacement reactive power, dynamic distortion power is also produced by power electronics. The compensation methods have expanded accordingly, with active analysis options through current transformers, and are therefore able to increase the quality of the energy supply efficiently as required.

Active harmonic filters increase efficiency and quality of energy supply
Active harmonic filters primarily reduce harmonics. These occur due to the characteristic energy consumption of non-linear consumers. In our everyday lives, products with power electronics are indispensable. These include LED light sources, IT and telecommunications equipment, frequency inverters, pumps, compressors, uninterruptible power supplies, electric vehicle charging stations, solar inverters and many more.

Institutions in critical infrastructure, in particular, which both help maintain important social functions and use sensitive electrical devices, such as hospitals, data centres or airports, place great importance on reliability, voltage quality and the stability of their supply.

Choose an innovative, simple and coordinated system with ZIEHL-ABEGG
ZIEHL-ABEGG already offers innovative compensation of harmonics required to provide the best possible support for the energy supply. The implemented SiC technology enables much more efficient use than comparable products in this performance class. Due to the lower heat dissipation, a much more compact active filter is possible and saves valuable space in the control cabinet during planning. In addition, optimised algorithms make automatic compensation available, eliminating the need for complex initial configuration.

The different active filter sizes available, 15A, 35A or 55A filter current, ensure a wide range of options depending on the application. With ZIEHL-ABEGG control technology for ZIEHL-ABEGG fans, you choose a perfectly coordinated system that meets the requirements of the future.