With 100+ years’ experience in high quality power, we possess reliable skill set in designing precise filters for systems. Systems are augmented with various analysis software including ETAP, PSPICE, MATLAB, PSCAD and software developed in-house.
Harmonic
filters
With experience in Arc furnaces & SVCs we deliver a vast array of passive filters:
Passive Harmonic Filter:
Built using an array of capacitors, inductors, and resistors. Can take the
form of a simple line reactor or use a series of parallel resonant filters to
eliminate harmonics.
Passive harmonic filters
based connection to the load:
Series Filter: A current rejecter, this filter is placed in series with load and uses inductors and capacitors in parallel.
Parallel Filter: A current acceptor, this filter is placed in parallel with load and components are built in series.
Passive harmonic filters
based on component types:
Band-pass Filter :
Common passive filter built using a capacitor connected in series with a resistor.
High-pass Filter :
Built with a resistor connected in parallel with a reactor. This helps in reducing the Q value of the filter which in turn helps reduce higher frequencies.
Using a a High-pass filter in combination with a band-pass filter will provide a solution for medium voltage and subtransmission voltage networks, which have moderate harmonic distortions.
C-type Filter :
A special variation of the high-pass filter, this filter is used for complex loads, cycloconverters, and electric arc furnaces. C-type filters provide the load with reactive power and avoid forming parallel resonance circuits with the load.
