Product Description Active harmonic filters (AHFs/APF) are
typically stand-alone devices that reduce the high levels of
harmonics produced by energy efficient non-linear loads.They work
by injecting harmonics into the electrical system in equal and
opposite measure to the existing system harmonics.As previously
mentioned, harmonic filters are used to eliminate harmonic
distortion caused by excess currents in and out of appliances. It
can prevent large quantities of harmonics from causing damage to
equipment, downtime of operation, and preventing an increase in
operating costs.The Active power filter monitors the load current
real-time through the external current transformer CT, and extracts
the harmonic component of the load current through the internal DSP
computing, then sends it through the PWM signal to the internal
IGBT, the inverter produces a current equal to the load harmonic
and opposite to the harmonic direction and injects the current into
the grid to compensate the harmonic current realizing the function
of harmonic control.System parameters Rated input wire voltage 3 8
0 V(-1 5%~+2 0%) Grid frequency 5 0 / 6 0 H z ( r a n g e : 4 5 H
z~6 2 H z) Number of parallel machines 1 ~ 1 0 s e t s Overall
efficiency ≥9 7% Grid structure T h r e e - p h a s e t h r e e - w
i r e / t h r e e - p h a s e f o u r - w i r e Current transformer
1 5 0/5~1 0 0 0 0/5 Circuit topology T r i - l e v e l P e r
f o r m a n c e i n d e x Response time
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