Grid-Connected Photovoltaic System with Active Power Filtering Functionality

Vaquero, Joaquín; Vázquez, N.; Soriano, Ivan; Vázquez, Jeziel

doi:10.1155/2018/2140797

Cited by 18 publications

(5 citation statements)

References 20 publications

(29 reference statements)

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“…However, the possibilities of increasing the modulation frequency are limited, as this will lead to increased power losses in VSI switches and reducing its efficiency. The same applies to the use of the sliding mode [11,12], when the modulation frequency is 90 kHz. Acceptable indicators for a modulation frequency of 6.8 kHz provide a rather complicated option in the implementation of CCL using dynamic error compensation [13].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improvement of the current control loop of the single-phase multifunctional grid-tied inverter of photovoltaic system

Shavelkin¹,

Jasim²,

Shvedchykova³

2019

EEJET

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source inverter (VSI) that combines the functions of an active power filter (APF) [2]. This contributes to increasing the utilization factor of CU due to its round-the-clock use [2-5] to maintain the maximum (close to one) power factor at the PCC to DG. The result is reduced load and energy loss in the DG. It is also possible to provide an autonomous mode of operation during the daytime [2, 3], stabilization of the load voltage [4]. Thus, improving the indicators of CU for systems with RES is an urgent task and contributes to the further development of energy with distributed sources of electricity.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Improvement of the current control loop of the single-phase multifunctional grid-tied inverter of photovoltaic system

Shavelkin¹,

Jasim²,

Shvedchykova³

2019

EEJET

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“…For local objects (small enterprise, cottage, mini-hotel, etc.) with power supply from the RES and the distribution grid (DG) of the alternating current, increasing the efficiency of the use of the conversion unit is achieved by the use of a multifunctional grid-connected AVI with a combined function of the power active filter (PAF) [1][2][3][4][5][6][7][8][9] thanks to its roundthe-clock use to maintain the maximum (close to 1) power factor at the point of connection to the DG.…”

Section: цель устранение погрешности контура регулирования тока инвеmentioning

confidence: 99%

“…Typical solutions in the current control circuit (CCC) of the multi-functional AVIs are the use of a proportional-integral (PI) regulator [1,3,4], the proportional-resonant regulator [1], the relay current regulator [1,2], the regulator on the basis of the fuzzylogic [5]. Solutions using PWM are More widespread [1,3,[5][6][7][8][9].…”

Section: цель устранение погрешности контура регулирования тока инвеmentioning

confidence: 99%

Error Elimination for Current Control Loop for Multi-Functional Single-Phase Grid-Connected Inverter

Shavelkin¹,

Kaplun²,

Shvedchikova³

2019

Elektroteh. elektromeh.

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Purpose. Elimination of the error of the inverter current control loop by improving its structure and justifying the parameters, which will ensure compliance with the current quality standard at the common coupling to the distribution grid of the load and the multi-functional grid inverter at the output of the renewable source of electrical energy. Methodology. Synthesis of structure of current control loop based on analysis of processes in electrical circuits and computer simulation. Results. Relationships for determining the input voltage of the inverter, reactor inductance and modulation frequency in accordance with the grid voltage, the maximum values of the inverter current and the amplitude of its ripple when combining the function of the active power filter. Dependencies of the amplitude of the pulsations of the output current of the inverter and the errors in the fundamental harmonic in accordance with the voltage at the input of the inverter, the modulation frequency and inductance of the output reactor are obtained. Originality. The structure of the inverter current control loop has been improved with a combination of proportional, integrating and differentiating links, and their parameters have been determined to ensure compensation of the disturbing action on input of the reference and compensation of the error of current from the disturbing action of the grid voltage regardless of its value. Practical value. The obtained solutions are the basis for the design of converters of electric power systems with renewable sources of electricity with improved energy efficiency. References 10, figures 7.

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“…In the first topology, a DC-DC converter is used for tracking maximum power from solar PV panels, and a SAPF is used to improve power quality. 4,7 In the second topology, the PV source is connected to the power grid via a SAPF to ensure the MPPT functionality and the power quality requirement by compensating for harmonic currents and reactive power. 8,9 Among the more usual MPPT algorithms are the perturb-and-observe (PO) algorithm and incremental conductance (IC) algorithm.…”

Section: Introductionmentioning

confidence: 99%

“…In this regard, two principal topologies can be distinguished. In the first topology, a DC‐DC converter is used for tracking maximum power from solar PV panels, and a SAPF is used to improve power quality 4,7 . In the second topology, the PV source is connected to the power grid via a SAPF to ensure the MPPT functionality and the power quality requirement by compensating for harmonic currents and reactive power 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Advanced nonlinear controller of single‐phase shunt active power filter interfacing solar photovoltaic source and electrical power grid

Hekss

Abouloifa

Lachkar

et al. 2021

Int Trans Electr Energ Syst

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This paper addresses the nonlinear controller design and the stability analysis of a shunt active power filter (SAPF) interfacing a solar photovoltaic (PV) system that consists of a couple of PV panels, a single-phase two-stage IGBT half-bridge SAPF and two identical DC link capacitors. We seek for the considered system the fulfillment of three control objectives: (a) extracting the maximum PV power using an appropriate maximum power point tracking (MPPT) algorithm; (b) regulation of the DC link capacitor voltages to the reference provided by the MPPT controller hence ensuring the exchange of power between the PV source and the AC power grid; (c) compensation for reactive power and undesired harmonics caused by the nonlinearity of electronic power loads, that is, performing power factor correction (PFC). The control objectives are achieved using a new two-loop cascaded controller. The Backstepping approach is applied in the inner loop to perform PFC. A filtered proportional-integral (PI) controller is applied in the outer loop to ensure tight regulation of the PV voltage. The MPPT control is implemented using a perturb-and-observe (PO) algorithm. The performance of the closed-loop system under the two-loop control strategy is formally analyzed through the Lyapunov approach applied to the averaged model. Numerical simulations are performed in MATLAB/SimPowerSystems environment to validate the design methodology and to confirm the theoretically predicted performances of the system under the proposed nonlinear controller.average analysis, Lyapunov stability analysis, nonlinear control, power factor correction, shunt active power filter, solar photovoltaic system List of Symbols and Abbreviations: L g , grid inductor; r g , grid resistor; R, load resistor; L, load inductor; C pv , filter capacitor; r f , filter resistor; L f , filter inductor; N s ,N p , number of connected modules in series and in parallel respectively; G, irradiance; T, temperature; μ, binary switching signal; i g , grid current; v go , grid voltage; i f , filtering current; i L , load current; i pv1 , i pv2 , PV output currents; v pv1 , v pv2 , PV output voltages; u, continuous control input; β, external control signal; P pv , PV panels power; v f , inverter output voltage; v g , voltage at point of common coupling; I f , peak value of output filter current; V f , peak value of inverter output voltage; θ 1 , phase of the voltage at point of common coupling; θ 2 , phase of the output filter current; χ, square of the PV voltage; u Ã , Steady state value of u; V , Lyapunov function candidate; f PWM , switching frequency; Q g , reactive power; T g , grid period; P g , active power; c 1 ,c 2 , c 3 , c 4 , controller parameters; ω g , angular frequency; IC, incremental conductance; IGBT, insulated-gate bipolar transistor; MPP, maximum power point; MPPT, maximum power point tracking; PCC, point of common coupling; PFC, power factor correction; PI, proportional-integral; PO, perturb and observe; PV, photovoltaic; PWM, pulse width modulation principle; SAP...

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Grid-Connected Photovoltaic System with Active Power Filtering Functionality

Cited by 18 publications

References 20 publications

Improvement of the current control loop of the single-phase multifunctional grid-tied inverter of photovoltaic system

Improvement of the current control loop of the single-phase multifunctional grid-tied inverter of photovoltaic system

Error Elimination for Current Control Loop for Multi-Functional Single-Phase Grid-Connected Inverter

Advanced nonlinear controller of single‐phase shunt active power filter interfacing solar photovoltaic source and electrical power grid

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