Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / nagesh.patwari
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 |
Post New Answer View All Answers
What is diversity factor in electric installations?
Factory acceptance test. FAT. For 132 kv transmisstion towers what is that meaning and what are the tests commonly companies perform now days.
what do u understand about FACTS? how they are useful?
Explain the functioning of diode?
What is the formuala to calculate the rating of motor protection circuit breaker
What is the real function of reverse power relay in generator panel while syncronising?
Could the power factor on electrical system can affect the registration of the kwhr meter or the CT/PT?
why asa method ZPF method is more accurate than ASA method?
how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids
What is the difference between Static and servo controlled voltage stablizer?
wat is d diffr btw shunt coil and trip coil in VCB?
In TNC switch, is there any 1NO+1NC block ? and if we move over closing position, is ther any affect on trip position or vice versa?
i need list of swg(standard wire guage) or area of conductor v/s current carrying capacity of conductor copper & alluminium...
what is the constructional difference between a power transformer and potentian transformer?
Why 1/3 is used in symmetrical components?
