Drive Isolation Drive Vs Passive Harmonics Filter
Drive Isolation Drive Vs Passive Harmonics Filter
(OP)
Can anyone advise the advantage on Drive Isolation Drive Vs Passive Harmonics Filter use on variable speed dive application?
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Drive Isolation Drive Vs Passive Harmonics Filter
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Drive Isolation Drive Vs Passive Harmonics FilterDrive Isolation Drive Vs Passive Harmonics Filter(OP)
Can anyone advise the advantage on Drive Isolation Drive Vs Passive Harmonics Filter use on variable speed dive application?
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RE: Drive Isolation Drive Vs Passive Harmonics Filter
Visit
http://www.mirusinternational.com/
for more info
RE: Drive Isolation Drive Vs Passive Harmonics Filter
A passive harmonic filter consists of R, L, C components tuned in a specific manner to shunt away from the power system certain harmonic frequencies generated by the drive.
The problem with passive filtering is it is sensitive to the power system electrical quantities. Changes in things like tie breaker positions, adding / removing loads can change the filter tuning frequencies and therby impact filtering effectiveness.
Passive filtering usually incorporates capacitors that typically have a shorter life than inductive components such as transformer coils.
RE: Drive Isolation Drive Vs Passive Harmonics Filter
A passive harmonic filter consists of R, L, C components tuned in a specific manner to shunt away from the power system certain harmonic frequencies generated by the drive.
The problem with passive filtering is it is sensitive to the power system electrical quantities. Changes in things like tie breaker positions, adding / removing loads can change the filter tuning frequencies and therby impact filtering effectiveness.
///The matrix (inline) filters (e.g. Lineator) are also passive harmonic filters; however, they have some advantages over the shunt passive harmonics filters, e.g. do not produce inadvertent resonance, have high input impedance to higher frequencies, etc. Visit
http://www.mirusinternational.com
for more info on Mirus Lineator.\\\
RE: Drive Isolation Drive Vs Passive Harmonics Filter
Under what circumstances we need to select Drive islolation Transformer instead of Matrix Harmonics filter?
RE: Drive Isolation Drive Vs Passive Harmonics Filter
But if harmonic reduction is the issue, transformer generally is not required - an input line reactor can provide equivalent harmonic reduction.
RE: Drive Isolation Drive Vs Passive Harmonics Filter
RE: Drive Isolation Drive Vs Passive Harmonics Filter
here is additional info for your comparison Drive Isolation phase-shifting XFMR vs Passive Harmonic Filters:
1. Shorts on filters:
a)they have a leading power factor when they unloaded,
b)the presence of the Cap Bank boosts the input voltage of the Drive when the Drive in stand-by mode (bad for the drine input suppressors),
c)some filters have a significient increase of their impedance that helps with the harmonic mitigation but creates more the voltage drop under full rated load; this voltage drop can affect on inverter bus supply and you can loose you output power to the motor.
2. Shorts on Isolation phase-shifting XFMRs;
a)a larger size than filters definately,
b)a higher cost due to the copper utilization for a two windings, a copper cost has increased lately on market.
Solutions: check with the Drive manufacturer, they have more options for you:
phase-shifting AutoXFRMs, active Harmonic Filters and so on.
Thanks, NNG.
RE: Drive Isolation Drive Vs Passive Harmonics Filter
http://www.mirusinternational.com/
for: Matrix (Passive) Harmonic Filters, e.g. Lineator.