Power Quality Improvement using a Robust Voltage Vector-Controlled Three-Phase SAPF-based Fuzzy Logic and Space Vector Modulation

The multiplication of nonlinear loads leads to significant degradation of the energy quality. Thus the interconnection network is subject to being polluted by the generation of harmonic components and reactive power, which causes a weakening efficiency, especially for the power factor. This research treats the modeling of robust voltage-oriented control (VOC) for a shunt active power filter (SAPF). To sustain the DC-bus voltage, a fuzzy logic controller (FLC) based Mamdani algorithm is synthesized to ensure active power control. Besides, a robust PLL-based bandpass multivariate filter (BPMVF) is used to ameliorate the network voltage quality. Furthermore, a space vector modulation (SVM) is inserted. A unitary power factor and sinusoidal network current are supplied with no requirement for a PWM generator, and with fewer harmonics. Expanded simulation results obtained from the transient and steady-state have demonstrated high performance and have verified the effectiveness of the suggested power control.

I. Introduction

Electrical networks are complex dynamic systems. Sometimes they have to deal with sudden variations in voltages and currents. These changes are due to the various disturbances caused by the connected nonlinear loads, on the one hand, and to all the various incidents that may occur on the network, on the other hand [1]. With the increasing use of power semiconductors components by most users, electrical networks are polluted by significant harmonic currents. These currents cause adverse effects on the normal operating mode of the network or the connected devices, without mentioning the economic losses generated [2].