active harmonic filters
What/How is the nature of Current waveform injected from Active Harmonic Filter?
a. Pure Sine Wavefrom
Active harmonic filters today are designed to calculate the amplitudes and phase angle of each harmonic order up to 71st Order Harmonics. The Active Harmonic Filter (AHF) is a very advanced system power device that is directed to produce a current of equal amplitude but counter shape. This limits the response to specific harmonic orders and may require less than one cycle (< 100microseconds). It is a complete solution for harmonic filtering along with the improvement in power factor correction.
It works by sensing electrical behaviour and instantly corrects the same. This is achieved by using intelligent precise control technology and sophisticated signal processing. AHF constantly monitor and inject the compensation current at real-time the most effective and reliable solution for power quality improvements.
AHF will generate the counter harmonic current to mitigate harmonics of local single load as well as the whole plant. Neutral current compensation is possible by using 3Ph, 4Wire AHF.
Major Industries where AHF is needed
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