Active Harmonic Filtering

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What are Harmonics?

Harmonic voltages and current in an electric power system are the result of non linear electric loads. Harmonic frequencies in the power grid are a frequent cause of power quality problems.

Harmonics in power systems result in increased heating of the equipment and the conductors, misfiring in variable speed drives and torque pulsations in motors.

What is Active Harmonic Filtering?

Active Harmonic Filtering eliminates these behaviors through an on-going system of monitoring and intervening.

Solutions to fit your requirements

We use high-quality Circutor Active Harmonic Filters and have a number of systems available to suit your commercial or industrial needs.

The cleaner the grid, the greater the benefit

Circutor AHF's help to eliminate harmonic pollution from the grid, reduce power quality problems and use energy more efficiently and reliably.

Harmonic pollution is a growing problem with the increasing use of power electronics and non-linear loads (such as variable speed drives, UPS, computers, servers, TV sets, etc.).​

General information​

AFQ multi-function parallel active filter offer the most complete solution for solving quality-related problems in three-phase industrial, commercial or service installations, caused not only by harmonics but also by the consumption of reactive power (usually of the capacitive type).

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  • Harmonic compensation up to 50th harmonic – (individually selectable)
  • Flicker compensation
  • Ultra-fast reactive power compensation – (inductive and capacitive)
  • Load balancing between phases and unloaded – neutral wire
  • Compact design
  • Modular system extendable from – 30 A to 3000 A
  • Grid resonance detection
  • Ethernet and Ethercat system for interconnection
  • User-friendly menu operation
  • High performance and reliability
  • Insensitive to network conditions
  • Simple installation

Typical applications

Fast current harmonics and reactive power suppression e.g. for:

– Data centers – UPS systems – Green power generation

(e.g. photovoltaics and wind turbines) Sensitive equipment manufacturing(e.g. silicon wafer production, semiconductor production) Industrial production machines – Electrical welding systems – Plastic industry machinery (extruders, injection molders) Office buildings and shopping centers (3rd and triple harmonic cancellation and neutral conductor unloading)

Continuous monitoring

Many modern systems require flexibility due to constant load and network changes.

Our solution continuously monitors your network and injects exactly the right amount of compensation current at exactly the right time.

This ensures your current waveform is restored instantaneously, the current consumption is lowered, and changes in load or installation conditions are fully compensated at all times.

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