Current control of three-phase grid-connected PV inverters using adaptive PR controller

Althobaiti, Ahmed; Armstrong, Matthew; Elgendy, Mohammed A.

doi:10.1109/irec.2016.7507628

Cited by 17 publications

(6 citation statements)

References 17 publications

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“…Current control in a synchronous (rotating) reference frame (SRF) using PI controllers is the typical solution, especially in the three-phase grid-connected inverters [84]. As shown in Figure 16, Clark's transformation transforms three-phase grid quantities vector from ABC natural reference frame into balanced two-phase quantities (α-β) and then converting to two-phase rotating reference frame by using Park's transformation which defined as the direct (d) and quadrature (q) components respectively.…”

Section: Parameter the Direction Of Power Flowmentioning

confidence: 99%

Grid-Connected PV Generation System—Components and Challenges: A Review

Hariri

Desa

Masri³

et al. 2020

Energies

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Renewable energy (RE) has become a focal point of interest as an alternative source of energy to the traditional fossil fuel and other energy sources due to the fact that it is more environmentally friendly, abundant and economically feasible. Many countries aggressively promote feed-in tariff schemes and solar photovoltaic (PV) systems have become one of the fastest growing RE sources that can be integrated into the grid distribution network. This paper reviews the recent development of grid-connected PV (GPV) generation systems comprising of several sub-components such as PV modules, DC-DC converter, maximum power point tracking (MPPT) technique, and an inverter. In addition, various grid synchronization and islanding detection methods are elaborated. The future key challenges to build a smart and efficient GPV generation system were also presented.

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Section: Parameter the Direction Of Power Flowmentioning

confidence: 99%

Grid-Connected PV Generation System—Components and Challenges: A Review

Hariri

Desa

Masri³

et al. 2020

Energies

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“…Figure 3a shows the block diagram of the Phase Locked Loop (PLL). The main objective of the PLL is to generate the grid voltage angle (θ PLL ) that utilized for abc/d-q transformation and to synchronize the inverter output voltage (V abc-inv ) with the PCC bus voltage and the grid current [26,27]. Moreover, the main task of the DC-link voltage controller is to maintain the voltage of DC-link at a specified constant value (500 V).…”

Section: Inverter Control Strategymentioning

confidence: 99%

Modified STATCOM control strategy for fault ride-through capability enhancement of grid-connected PV/wind hybrid power system during voltage sag

2020

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This paper proposes the employment of Static Synchronous Compensator (STATCOM) in reactive power compensation to enhance the Fault Ride-Through (FRT) capability and improve the dynamic performance of a grid-connected PV/wind hybrid power system during the transient grid disturbances. The hybrid power system consisting of 9 MW Doubly Fed Induction Generator (DFIG)-based wind farm and 1 MW PV station is integrated with 100 MVAR STATCOM at the Point of Common Coupling (PCC) bus. The dynamic performance of the PV/wind hybrid power system with the proposed STAT-COM controller is analyzed and compared with another FRT control strategy during a grid voltage sag. The FRT control strategy is based on the injection of reactive power from the hybrid system to enhance the FRT capability during the grid faults, and also activation of the outer crowbar protection system to protect the DFIG. On the other hand, the proposed STATCOM controller adjusts the PCC bus voltage during the grid disturbances by dynamically controlling the amount of reactive power injected to or absorbed from the electrical grid. Modeling and simulation of the proposed hybrid power system have been implemented using MATLAB/SIMULINK software. The effectiveness of both the proposed STATCOM controller and the FRT control strategy is evaluated during a 50% grid voltage sag. The simulation results illustrate that the STATCOM controller decreases significantly the level of voltage drop during the voltage sag, maintains the injected active power from the PV station at its rated value, and protects effectively the PV DC-link voltage from overvoltage. Moreover, when the STATCOM controller is employed, the injected active power from the wind farm is improved considerably and the oscillations of the DFIG rotor speed are reduced efficiently during the fault. Furthermore, the comparison confirms the superior dynamic performance of the STATCOM controller in enhancement the FRT capability as compared with the FRT control strategy.

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“…The most important parts of the VSI controller are the Phase Locked Loop (PLL), the DC-link voltage controller, and the decoupled current controller. The PLL estimates the grid voltage angle (θ PLL ) that utilized for abc/d-q transformation and to synchronize the VSI output voltage with the PCC bus voltage [22]. As can be observed in Fig.…”

Section: ) Boost Converter Controller: Adaptive Variable Step-size Imentioning

confidence: 99%

Modeling, Control, and Performance Evaluation of Grid-Tied Hybrid PV/Wind Power Generation System: Case Study of Gabel El-Zeit Region, Egypt

et al. 2020

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The potential for utilizing clean energy technologies in Egypt is excellent given the abundant solar irradiation and wind resources. This paper provides detailed design, control strategy, and performance evaluation of a grid-connected large-scale PV/wind hybrid power system in Gabel El-Zeit region located along the coast of the Red Sea, Egypt. The proposed hybrid power system consists of 50 MW PV station and 200 MW wind farm and interconnected with the electrical grid through the main Point of Common Coupling (PCC) busbar to enhance the system performance. The hybrid power system is controlled to operate at the unity power factor and also the Maximum Power Point Tracking (MPPT) technique is applied to extract the maximum power during the climatic conditions changes. Modeling and simulation of the hybrid power system have been performed using MATLAB/SIMULINK environment. Moreover, the paper presented a comprehensive case study about the realistic monthly variations of solar irradiance and wind speed in the study region to validate the effectiveness of the proposed MPPT techniques and the used control strategy. The simulation results illustrate that the total annual electricity generation from the hybrid power system is 1509.85 GWh/year, where 118.15 GWh/year (7.83 %) generates from the PV station and 1391.7 GWh/year (92.17%) comes from the wind farm. Furthermore, the hybrid power system successfully operates at the unity power factor since the injected reactive power is kept at zero.

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Current control of three-phase grid-connected PV inverters using adaptive PR controller

Cited by 17 publications

References 17 publications

Grid-Connected PV Generation System—Components and Challenges: A Review

Grid-Connected PV Generation System—Components and Challenges: A Review

Modified STATCOM control strategy for fault ride-through capability enhancement of grid-connected PV/wind hybrid power system during voltage sag

Modeling, Control, and Performance Evaluation of Grid-Tied Hybrid PV/Wind Power Generation System: Case Study of Gabel El-Zeit Region, Egypt

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