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Compensation of harmonic currents utilizing AHC
Post: #1

Today, the situation on low-voltage AC systems has become a serious concern.The quality of electrical power in commercial and industrial installations is undeniably decreasing.


In addition to external disturbances, such as outages, sags and spikes due to switching and atmospheric phenomena, there are inherent, internal causes specific to each site and resulting from the combined use of linear and non-linear loads.

Untimely tripping of protection devices, harmonic overloads, high levels of voltage and current distortion, temperature rise in conductors and generators all contribute to reducing the quality and the reliability of a low-voltage AC system.


The loads which consume non-sinusoidal currents are called as non-linear load.This type of load is used for the conversion, variation and regulation of electrical power in commercial, industrial and residential installations.

Acurrate signal conditioning plays an important role in voltage signals.Proper signal conditioning converts the high power signals to meet the requirements of the low voltage control circuits.Increase in non-linearity causes different undesirable features like low power factor and low efficiency.


Active harmonic conditioners are proving to be viable option for controlling harmonic distortion levels in many applications.It has been proved to be effective when the load is non-linear.

The effective operation of the active harmonic conditioner is based on the accurate sensing of the source current,source voltage and DC side capacitor voltage of the filter...
Post: #2
give me full doc& ppt of this topic
Post: #3
Hi,
a report pdf of the topic is posted in this thread:
http://seminarprojectst-compensation-of-harmonic-currents-utilizing-ahc--2262
Post: #4
to get information about the topic compensation of harmonic currents utilising ahc full report ,ppt and related topic refer the link bellow
http://seminarprojectst-compensation-of-harmonic-currents-utilizing-ahc

http://seminarprojectsattachment.php?aid=10032

http://seminarprojectst-compensation-of-harmonic-currents-utilizing-ahc--2262?pid=40034#pid40034
Post: #5
(21-09-2008 10:01 AM)computer science crazy Wrote:  Today, the situation on low-voltage AC systems has become a serious concern.The quality of electrical power in commercial and industrial installations is undeniably decreasing.


In addition to external disturbances, such as outages, sags and spikes due to switching and atmospheric phenomena, there are inherent, internal causes specific to each site and resulting from the combined use of linear and non-linear loads.

Untimely tripping of protection devices, harmonic overloads, high levels of voltage and current distortion, temperature rise in conductors and generators all contribute to reducing the quality and the reliability of a low-voltage AC system.


The loads which consume non-sinusoidal currents are called as non-linear load.This type of load is used for the conversion, variation and regulation of electrical power in commercial, industrial and residential installations.

Acurrate signal conditioning plays an important role in voltage signals.Proper signal conditioning converts the high power signals to meet the requirements of the low voltage control circuits.Increase in non-linearity causes different undesirable features like low power factor and low efficiency.


Active harmonic conditioners are proving to be viable option for controlling harmonic distortion levels in many applications.It has been proved to be effective when the load is non-linear.

The effective operation of the active harmonic conditioner is based on the accurate sensing of the source current,source voltage and DC side capacitor voltage of the filter...

 

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