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Original Research

. 2016; 4(1): 7-11


IMPROVEMENT OF POWER QUALITY USING PQ THEORY BASED SERIES HYBRID ACTIVE POWER FILTER

Dr.K.Sundararaju, Preetha Sukumar.

Abstract
This paper investigate the power quality
improvement under unbalanced supply condition. The
current drawn is highly non-linear and contain harmonics.
Shunt active filter eliminate only the current harmonics,
not the voltage harmonics. But he series active filter
provide harmonics isolation. SHAPF is suitable for
compensation of source voltage, reactive power and
reduce source current and voltage harmonics. It also
eliminate series and parallel resonance. The control
technique for the SHAPF is based on the Generalized
Instantaneous Reactive Power Theory. The real and
reactive power are converted into voltage component.
Then the reference voltage are calculated inorder to
compensate the source current and load voltage
harmonics. Simulations have been carried out on
MATLAB-Simulink Platform and results are presented.

Key words: Active and passive filter; instantaneous reactive power theory; Harmonics; MATLAB


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