A comparative study and experimental validation on single phase series active power filter control strategies using pi, flc and sliding mode controllers

Abstract

<p><span>Sensitive loads are widely used in industrial, which is the main cause of sag-swell and harmonics voltages problems that can affect the power quality. Among the devices that solve such power quality perturbations, the series active power Filter APFS is considered in this paper. Thus, a single phase APFS is developed through an analytic analysis, supported by an experimental validation, where we applied classical proportional integrator PI, fuzzy logic FLC and <a name="_Hlk525422768"></a>sliding mode SM controllers to improve the dynamic response of the APFS. In addition, a comparative study between these control strategies has made in order to mitigate voltage sag-swell and especially harmonics, where the SMC has showed more effective and robust results compared to PI and FLC and proved by the Total harmonic distortion THD ratio. Results of the proposed controllers are simulated in MATLAB simulink® and validated through experimental tests applied on our system prototype.</span></p>

Simulation and experimental validation of single-phase series active power filter using PI and backstepping nonlinear controllers

“…Then, Figure 13 support these results with the experimental obtained curves of the injected voltage while traking its reference value during the applied sag phenomina during [5.6 s-6.3 s]. In the previous paper [4,29], fuzzy logic FLC and sliding mode SMC controllers have presented satsifactor results compared with the classical PI, where the THD values after the correction were about 4%-3.8% respectively. Figure 14 presents the waveforms of the voltages using the SMC method.…”

Design and Implementation of Hybrid Active Power Filter (Hapf) for UPS System

“…Few of them are Capacitors, Compensators, EMI Filters, Passive filters, Dynamic Voltage Restorer (DVR), Active Power filters, and Unified Power Quality Conditioner (UPQC), Unified Frequency Quality Conditioner (UFQC) and Hybrid Active Power Filters (HAPF) [9][10][11][12][13][14][15][16]. The comparison of various harmonic alleviation techniques has been studied out by different researchers [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] and concluded that the HAPF is effective and more fast and modern filtering method. Therefore, the application of HAPF for UPS System is a novel work and shown effective result.…”

“…Technical constraint of ordinary APFs overcome with HAPF arrangement. It is combination of active and passive filters which has fast operation and rapid control with improved performance, compact size and cost-effective solutions as compare to other harmonic mitigation techniques like passive filters and multiples converter [20][21][22][23][24][25][26][27].…”

“…Reactive power transfer between bus DC Capacitor (Charges and discharges) and power could be drawn by the proposed HAPF. Power is to be provided to load and VSI to maintain the constant bus voltage DC Capacitor which lost due to capacitor leakage current or switching loss [27][28][29][30]. Bus DC Capacitor voltage dropped gradually until losses controlled [30].…”

“…The objective of this research is to address harmonic of UPS System and AC main supply form power system to explore the potential to increase reliability, minimize losses, optimal power transfer [9][10][11][12][13][14][15]. Passive and EMI Filters could not eliminate harmonics effectively from UPS system [16][17][18][19][20][21][22] therefore it requires modern, rapid filtering method as well combination of Active and Passive Filters [23][24][25][26][27] such as proposed model of HAPF for UPS System could mitigate current harmonics [28][29][30][31][32][33][34] for optimal power transfer, minimizing losses, increase overall efficiency, reliability and life span of equipment [13][14][15][16][17][18][19][20]. To address harmonic filtering needs, a harmonic HAPF for UPS System has been proposed on basis of experimental results [7][8].…”