Single Phase Power Factor Improvement Based Instantaneous Power P Q Theorm

Abstract

This paper presents how to harmonic disturbance reduce on single phase power system. One of the most popular method is harmonic signal extraction with instantaneous power p q theorm. This algorithm implemented to harmonic cencellation by active power filter circuit be paralled with the non linier load. This filter generates of current compensation that are injected into the grid to improve power quality. This Filter is built by an inverter circuit that consists of a mosfet switch array and capasitor mounted on DC link side. Two types of loads are resitive inductive and resistive capasitive produce of current source wave form that close pure sinusoid. Simulation results show the THD index fell to the level of 2.7% in accordance with IEEE 519 standard rules which states that the harmonics content of the power system may occur below 4%, indicating that the power system can be categorized as having good quality.

Power factor improvement for a three-phase system using reactive power compensation

“…A Microcontroller is being used to monitor the power factor and it is automatically switch on the capacitors of the required capacity [4]. A comparative analysis using the solid state relay to improve the PF is used in [5] which uses a relay to detect the value of the power factor and compares it with a pre-set value. After the comparison, if the pre-set value comes out to be less the calculated value, then the capacitor is automatically added, by this design [6] Various methods for reactive power compensation are proposed such as series compensation, shunt compensation, static VAR commutator, STATCOM, and synchronous condenser.…”