An advanced control strategy of PV system for low-voltage ride-through capability enhancement

Yang, Fang; Yang, Lihui; Ma, Xikui

doi:10.1016/j.solener.2014.08.018

Cited by 67 publications

(29 citation statements)

References 25 publications

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“…For the PV, the occurrence of a fault at the grid makes the inverter incapable of delivering power generated by the PV source due to decrease in the grid voltage. This excess power causes the dc-link voltage to go high due to the power imbalance between the grid side and PV side [26]. The VR-FCL concept is employed to balance the active power at the both sides of the converters during the abnormal grid condition (fault).…”

Section: Concept Of Stability Enhancement By Vr-fclmentioning

confidence: 99%

“…TPD and ΔV PCC during the fault are exploited as the inputs to the FLC to generate the corresponding duty ratio. For better transient stability, fast fault detection is required and in this work, root-mean-square (rms) method is employed for this purpose [26]. The PCC rms voltage is computed without additional transformation given by where V d and V q are the dand q-axis voltage component, respectively.…”

Section: Variable Resistive-type Fault Current Limitermentioning

confidence: 99%

“…Low-voltage fault appeared at the grid side leads to the imbalance in power supplied from the dc side to the ac side of the PV inverter which causes excessive voltage rise in dc link. Also, overcurrent in the ac side of the PV inverter may damage the power electronic converter [26]. Application of the VR-FCL prevents the PV dc-link voltage and ac-side current to go high and hence protects the power electronic converter during grid low-voltage disturbance.…”

Section: B Transient Stability Improvement By Vr-fcl During Balancedmentioning

confidence: 99%

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Transient Stability Augmentation of PV/DFIG/SG-Based Hybrid Power System by Nonlinear Control-Based Variable Resistive FCL

Hossain

Ali

2015

IEEE Trans. Sustain. Energy

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This paper proposes three nonlinear controllers such as fuzzy logic controller (FLC), static nonlinear controller (SNC), and adaptive-network-based fuzzy inference system (ANFIS)based variable resistive-type fault current limiter (VR-FCL) to augment the transient stability of a large-scale hybrid power system consisting of a doubly fed induction generator (DFIG)-based wind farm, a photovoltaic (PV) plant, and a synchronous generator (SG). Appropriate resistance generation of the VR-FCL during a grid fault to provide better transient stability is the main contribution of the work. The effectiveness of the proposed control methods in improving the transient stability of the hybrid power network is verified by applying both balanced and unbalanced faults in one of the double circuit transmission lines connected to the system. Simulation results show that the proposed FLC-, SNC-, or ANFIS-based VR-FCL are effective in improving the transient stability of the studied hybrid system. Moreover, all the proposed methods exhibit almost similar performance. Therefore, any of the methods can be chosen for the transient stability enhancement of the hybrid power system. Index Terms-Adaptive-network-based fuzzy inference system (ANFIS), doubly fed induction generator (DFIG), duty ratio (d), fuzzy logic controller (FLC), photovoltaic (PV), static nonlinear controller (SNC), synchronous generator (SG), transient stability, variable resistive-type fault current limiter (VR-FCL).

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Section: Concept Of Stability Enhancement By Vr-fclmentioning

confidence: 99%

Section: Variable Resistive-type Fault Current Limitermentioning

confidence: 99%

Section: B Transient Stability Improvement By Vr-fcl During Balancedmentioning

confidence: 99%

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Transient Stability Augmentation of PV/DFIG/SG-Based Hybrid Power System by Nonlinear Control-Based Variable Resistive FCL

Hossain

Ali

2015

IEEE Trans. Sustain. Energy

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“…On this basis, a lot of research has been done on the gridconnected PV systems so that they provide LVRT capability [11][12][13][14]. Also, various developments related to this concern have been already done for wind farms [15][16][17][18], since they provide higher power in comparison to the photovoltaic systems which are connected to the grid.…”

Section: Introductionmentioning

confidence: 99%

Fault Ride-Through Capability Enhancement for Microinverter Applications

Ansari

Mizani

Ashouri

et al. 2019

Journal of Renewable Energy

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Due to the fast growth of single-phase grid-connected photovoltaic (PV) systems, the existing grid codes are expected to be modified to guarantee the availability, quality, and reliability of the electrical system. Therefore, the future single-phase PV systems should become smarter and support low voltage ride-through (LVRT) capability, which are required for three-phase wind power systems. In this paper, the operation principle of a flyback inverter in a low-voltage ride-through operation is demonstrated in order to map future challenges. The steady state performance of the flyback inverter under voltage rise and drop conditions at boundary conduction mode (BCM) and discontinues conduction mode (DCM) is studied theoretically. The simulation results of the flyback inverter for various grid faults are presented to verify the theoretical analyses. The results indicate the fact that the flyback inverter at BCM condition can provide LVRT capability for photovoltaic microinverter applications in distributed generation (DG) systems, even though it does not need any auxiliary control branches and any limitations in components design.

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“…Some work has been done to integrate SCESS with STATCOM for low voltage and fault ride through as well as smoothing power fluctuation of wind energy system [9]- [11]. Low voltage ride through and fault response of grid connected solar inverters without energy storage is discussed in [12]- [16]. Different linear and nonlinear control techniques have been proposed recently on isolated and grid connected PV with energy storage system [17]- [21].…”

Section: Introductionmentioning

confidence: 99%

Grid-connected PV array with supercapacitor energy storage system for fault ride through

Worku

Abido

2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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A fault ride through, power management and control strategy for grid integrated photovoltaic (PV) system with supercapacitor energy storage system (SCESS) is presented in this paper. During normal operation the SCESS will be used to minimize the short term fluctuation as it has high power density and during fault at the grid side it will be used to store the generated power from the PV array for later use and for fault ride through. To capture the maximum available solar power, Incremental Conductance (IC) method is used for maximum power point tracking (MPPT). An independent P-Q control is implemented to transfer the generated power to the grid using a Voltage source inverter (VSI). The SCESS is connected to the system using a bi-directional buck boost converter. The system model has been developed that consists of PV module, buck converter for MPPT, buck-boost converter to connect the SCESS to the DC link. Three independent controllers are implemented for each power electronics block. The effectiveness of the proposed controller is examined on Real Time Digital Simulator (RTDS) and the results verify the superiority of the proposed approach.Index Terms--Active and reactive power control, fault ride through, MPPT, Photovoltaic system, RTDS Supercapacitor Energy storage I.978-1-4799-7800-7/15/$31.00 ©2015 IEEE

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An advanced control strategy of PV system for low-voltage ride-through capability enhancement

Cited by 67 publications

References 25 publications

Transient Stability Augmentation of PV/DFIG/SG-Based Hybrid Power System by Nonlinear Control-Based Variable Resistive FCL

Transient Stability Augmentation of PV/DFIG/SG-Based Hybrid Power System by Nonlinear Control-Based Variable Resistive FCL

Fault Ride-Through Capability Enhancement for Microinverter Applications

Grid-connected PV array with supercapacitor energy storage system for fault ride through

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