how work a harmonics filter(L-C combition).
Passive Flitering-
An LC circuit, tuned to each harmonic order to be filtered, is installed in parallel with the non-linear load. This bypass circuit absorbs the harmonics, thus avoiding their flow in the distribution network.
Generally speaking, the passive filter(LC series ckt in parallel with Non linear load ) is tuned to a harmonic order close to the order to be eliminated. Several parallel-connected branches of Passive filters can be used if a significant reduction in the distortion of a number of harmonic orders is required. It offers both power-factor correction and high current-filtering capacity .Passive filters also reduce the harmonic voltages in installations where the supply voltage is disturbed. If the level of reactive power supplied is high, it is advised to turn off the passive filter at times when the percent load is low.
AHC Active harmonics filter-
AHC comprising power electronics and can be installed in series or parallel with the non-linear load, compensate the harmonic current or voltage drawn by the load. A parallel-connected active harmonic conditioner (AHC) compensating the harmonic current (Iharm = -Iactiv) by injecting Iactiv in opposite phase.
The AHC injects in opposite phase active current the harmonics drawn by the non-linear load, such that the line current Is remains sinusoidal.
Hybrid Filtering (Combined Active & Passive Filter)
Passive and active filters are combined in a single system to constitute a hybrid filter. This new filtering solution offers the advantages of both types of filters and covers a wide range of power and performance levels.
Is This Answer Correct ? | 0 Yes | 0 No |
Wat is power factor exact meaning in terms of technical terms plz explain ?
what is diff b/w electrical & electronics ?
What is the HVDC Transmission System? What are the conditions applicable to lay an HVDC Line?
What are the types of transformers according to the arrangement of iron cores?
WHAT IS NORMAL VECTOR GROUP USED FOR DESIGNING OF TRANSFORMERS??
I have a 600VA numeriv digital UPS for computer only. It holds for 15 minutes only. but i am try to using home CFL Light I cant using UPS 2 or 3 secound automatic off .but computer ok how to change this is in to ups ?
How to calculate the cable size for particular load
What is Avg. Power Consumption of 2 TR Split A/C???How v can calc. this???
Explain the fundamental difference between emf (electro motive force) and pd (potential difference) ?
Is there any calculation to find unknwon(unferroled) phases R Y B in alternator,3 phase motor anybody shoot my problem. how can we notice this is the respective phase?
types of motors suitable for escalators with reason
WHAT IS THE USE OF TERTIARY WINDING IN A STAR/DELTA TRANSFORMER ?