Abstract
Control of Three-Phase Shunt Active Power Filter SAPF by Instantaneous Reactive Power Theory
Highlights
Power quality issue is becoming very serious now-adays
Active and reactive power for three phase system can be given as following equations (3) and (4), p=vα·iα + vβ·iβ iabc* = ඥ2/3 −1/2 √3/2 ·iαβ*. These currents are compared with source currents and obtained error is processed through PI to generate reference current for active power filters (APFs)
SIMULATION RESULTS The proposed system is simulated in MATLAB/simulink along with the control technique proposed in figure 2 and 3
Summary
Power quality issue is becoming very serious now-adays. This is because nonlinear loads such as electrical machines, static power converters, electric arc furnaces, etc. which mainly lead to harmonic disturbances in power lines. Power electronic equipments for human comfort plays major role in it These power electronic equipments make our life convenient, it injects lot of harmonic current to the supply system and affects power factor [1]. Passive LC filters have been used to eliminate line current harmonics and thereby increase the load power factor. Tuned passive filters are very effective for the elimination of specific harmonic components but has some drawbacks, such as. They may cause series and load resonances in the system. Following are some of the disturbances which are common in affecting power quality of the system: Transients Sag and Swell Variation in voltage Harmonics. Shunt Active Power Filter (SAPF) is the effective solution to these problems. Basic structure of SAPF In this paper reference current generation using IRP theory is presented
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