POWER FILTER
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Introduction to Active Filter


Sinusoidal Wave Form
Distortion Current

General principle of active filtering


Harmonic current spectrum
Distorting harmonic Current

Waveforms obtained by eliminating
the harmonic components
of a rectangular periodic
signal up to the
(a) 13th harmonic,
(b) the 25th harmonic and
© the 50th harmonic


ACTIVE FILTER USED AS REACTIVE POWER


Capacitor Bank
Automatic Compensation
Fixed Compensation