ACTIVE FILTERS FOR HARMONICS
AHF
The Esscom active filters AHF series, also known as “active harmonic compensators”, eliminate harmonics through the generation of a reverse waveform that compensate for distortion.
The active filters of the AHF series ensure optimal suppression of harmonics regardless of the number of loads and their usage profile.
These filters, installed in parallel to the network, are sized to eliminate a specified amount of harmonic current from the system.
Typical applications include loads present in complex industrial plants; in melting, rolling mill and welding plants; in the oil and gas sector; in generation plants, in commercial and residential buildings, in tunnel ventilation systems and in data processing centers.
The Esscom active harmonic filter AHF series implements a process of compensation of the harmonic content: the harmonic current produced by the load is constantly monitored and an adaptive waveform is generated, that corresponds to the exact shape of the non-linear portion of the load current.
The AHF introduces this adaptive current into the load at the connection point with a reaction time of 50 μs and a response time of 5ms.
Unlike passive harmonic filters, these filters can provide harmonic mitigation in any load condition up to their nominal capacity.
The active harmonic filter works in parallel and compensates the harmonic content current, it can be chosen for applications consisting of a single or a multiple load of different types.
