Active Filter

The different faults in industrial systems is continuously growing.
It comes more often to problems and failures of control systems and equipment.

In a variety of power grid problems Active filters can help.

FRANKE Elektrotechnik offers different Active filters for each specific need.

We support our customers in the conceptualisation to commissioning.

What is a Active Harmonic Filter used for?  
Harmonic compensation
For 3- and 4-wire power networks, up to 50th harmonics

Reactive power compensation
Fast power factor correction.

Load balancing
Balancing loads between phases and unload neutral wire

Flicker compensation
Reducing flicker values (caused by reactive current)
 
What is the reason for Harmonics in 3ph. Power Systems?

None linear loads generate harmonics on the grid side!

6 pulse – Line Rectifier (B6), Thyristor – Bridge (SCR), other Loads

 

Modern loads are the source for harmonics (Current and Voltage)

Non sinusoidel currents generates voltage drops in combination with the line impedance and this is the result for voltage distortion.

 

Active Filter,  what else?

• Connecting point (PCC) parallel to the load
• Filter performance adjustable

• Filter result independent from the grid impedance
• Filter result independent from partial-load operational range
• Control algorithmic are adapting to dynamic loads
• Overload proof (Temperature proof)

• Parallel operation of different filter size possible

• etc.

Additional benefits as add on:

• Compensation of reactive Power (ind. or cap.)
• Load balancing
• etc.

Mode of operation, 3-wire system

FRANKE Elektrotechnik Active Filter (3-wire), TN-S – Grid