Abstract: The “Generalized Theory of the Instantaneous Reactive Power in Three-Phase Circuits”, proposed by Akagi and also known as the p-q theory, is an interesting tool to apply to the control of active power filters to analyze three-phase power systems in order to detect problems related to harmonics, reactive power and unbalance of the load. Due to the intensive use of power converters and other non-linear loads in industry and by consumers in general, it can be observed an increasing deterioration of the power systems voltage and current waveforms. To overcome all these problems and to improve power quality, Akagi was introduced p-q theory in 1983.In which, the unwanted reactive power is generated which causes bad effects in power systems are reduced by using shunt active power filter compensation technique. In this technique by using compensator, we are injecting the reactive power which opposes the unwanted reactive power. The quantity of reactive power is determined by using p-q theory.
Keywords: Power quality, Harmonics, PI controller, Active Filter, Non-Linear, Load, IGBT, Diode, Instantaneous power Theory.
Title: Power Quality Improvement of Non-Linear Load by Using Instantaneous P-Q Theory
Author: R.V.L. Narayana Divakar, P.Kishore, CH.Ravi Kumar, V.Madhu Kishore, V.Pradeep Kumar
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
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