Study on Shunt Active Power Filter Control Strategies of Three-phase Grid-connected Photovoltaic Systems

Abstract

This paper deals with the improvement of the energy quality using shunt active power filter. The three-phase grid-connected photovoltaic generator consists in solar panels, a three-phase voltage inverter connected to the grid and a nonlinear load constituted by a diode rectifier bridge supplying a resistive load in series with an inductor. In so doing, three main challenges arise from the application context. First, the harmonic currents and the reactive power must be compensated. The second challenge is the injection of active solar energy into the grid. Third, Maximum Power Point Tracking (MPPT) must be found. This paper proposes a method addressing those challenges. For the first and the second one, direct current and power controls is used. For the third challenge, an algorithm is proposed which take in account the electrical variables and the variation of the solar irradiation. Simulation results of the proposed method are shown. The method is illustrated with two different strategies: Hysteresis Control and Direct Power Control (DPC) for a variable load. Obtained results are presented and compared in this paper to confirm the robustness and the superiority of DPC strategy compared to Hysteresis Control strategy. In the same context, the simulation carried out in this article shows promising results with THD approximates 1.33 %.

A New Control Stratum Applied to Two Adaptation Stages Based on Adaline-Type Neuronal Predictive Control in a Photovoltaic Solar Conversion Chain

“…Table 2 compare the THD current (%) of the proposed method with recent works. [25] Proposed synergetic 1.03 [26] R-load with Grid+SAPF 2.48 [27] Modified SRF theory-based control 3.7 [28] Hysteresis Current Controller (HCC) 1.74 [29] DPC proposed controlrol 1.33 The proposed work…”

Power Quality and Capability Enhancement of a Wind-Solar-Battery Hybrid Power System

“…The second mode aims to enhance the HS power quality by reducing the fluctuations of the output power for different weather conditions. This objective aims to smooth the total power produced by the hybrid system in a way that is different from unlike other works which deal the subject of energy quality for the hybrid systems through other techniques and according to other concepts, such as: the technique that applies the improved control strategy for power quality enhancement in standalone systems based on four-leg voltage source inverters (presented in [13]), the technique that aims to achieve the power quality improvement of single phase weak grid interfaced hybrid solar PV and wind system using double fundamental signal extracter-based control (presented in [14]), the technique aims to improve the voltage of remote connection using wind-solar farms equipped with new voltage control strategy based on virtual impedance monitoring (presented in [15]) and the technique which aims to improve the energy quality using a shunt active power filter (presented in [16]).…”

Performance Analysis of Universal Power Quality Conditioner Systems Based on Seven-level NPC Inverter Using PD-SPWM with Fuzzy Control Scheme

“…To improve the power quality, some solutions have been proposed by several authors. Among them the shunt [2] and series active power filters have proven as an important and flexible alternative to compensate most important voltage and current related power quality problems in the distribution system [3]. In the past, these identified power quality problems were mitigated by using switched capacitor and thyristor controlled inductor coupled with conventional passive filters [4].…”