A review on current reference calculation of three-phase grid-connected PV converters under grid faults

Afshari, Ehsan; Moradi, Gholam Reza; Yang, Yongheng; Farhangi, Babak; Farhangi, Shahrokh

doi:10.1109/peci.2017.7935761

Cited by 24 publications

(15 citation statements)

References 37 publications

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“…5 shows a typical control scheme for the grid‐connected mode involving a secondary communication‐based layer. This section summarises the available literature [14, 15, 16, 17, 20, 24, 26, 162, 219, 226–366] on unbalance mitigation in the grid‐connected scenario of both single and multiple inverters.…”

Section: Unbalance Mitigation In the Grid‐connected Modementioning

confidence: 99%

“…A flexible scheme for LVRT eliminating the need for a PLL for GCIs under asymmetrical fault conditions is presented in [347]. A review of RCG strategies for PV‐based DGs under grid faults is presented in [348]. An asymmetric LVRT strategy is proposed in [349] provides allowable margins for each phase voltage magnitude rather than controlling only the positive‐sequence voltage which allows for a seamless transition over a fault.…”

Section: Unbalance Mitigation In the Grid‐connected Modementioning

confidence: 99%

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Unbalance mitigation strategies in microgrids

Vijay

Doolla

Chandorkar

2020

IET Power Electronics

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Unbalance or asymmetry in the distribution network is a well-known power quality issue. In the modern active distribution system, with the increasing penetration of renewables, this phenomenon becomes more pronounced. In the context of microgrids (MGs), several works have been proposed for the management and mitigation of the unbalance, for both the sharing of unbalanced load and maintaining the voltage quality in the islanded mode and for the control of distributed generators in the grid-connected mode during unbalanced conditions. This study comprehensively reviews, summarises, and classifies the various strategies of the unbalance mitigation techniques for the islanded and grid-connected modes of operation for threephase MGs and presents the possible challenges and avenues for future investigations on the topic.

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Section: Unbalance Mitigation In the Grid‐connected Modementioning

confidence: 99%

Section: Unbalance Mitigation In the Grid‐connected Modementioning

confidence: 99%

Unbalance mitigation strategies in microgrids

Vijay

Doolla

Chandorkar

2020

IET Power Electronics

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“…With this approach, the current in the line is regulated simply by a concentrated strategy and the active and reactive power are managed by taking care of phase angle along with amplitude of inverter output current. Another advantage of this mode of control is that it is protected against over currents [14][15]. Schematic diagram of an inverter control strategy as shown in Figure 2.…”

Section: Controller For Real and Reactive Powermentioning

confidence: 99%

A novel control strategy for power quality improvement in grid-connected solar photovoltaic system

Gakhar

Gupta

2019

IJEECS

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<p>In this paper, a novel and dynamic, current control based inverter control strategy has been used for energy optimization and power quality improvement in a grid-connected solar photovoltaic plant using a PI controller. The output of the plant is delivered to the grid passing through a boost converter controlled by an MPPT controller and an inverter. The control strategy proposed offers the flexibility to keep control of active as well as reactive power being injected straight into the grid and also helps in mitigating the total harmonic distortion levels. Also, the effect of the conventional PI controller and PI controller optimized through Genetic Algorithm has been compared. The GA-PI controller has been found effective in reducing the Total Harmonic Distortion in the current injected in the grid. The effectiveness of the work has been observed by using a MATLAB/SIMULINK environment.</p>

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“…The low-voltage ride-through capability of a single-phase grid-connected PV system is investigated in [10]. A review of the existing current reference calculation methods is provided in [11]. To inject power into the utility grid, a proportional-integral (PI) controller in the synchronous frame is used in [12].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions

et al. 2020

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This paper presents an improved control strategy to cancel the double grid frequency oscillations in the active power, reactive power, and DC-link voltage of a three-phase grid-connected photovoltaic (PV) system under unbalanced grid condition. To achieve these goals, an enhanced positive–negative-sequence control (PNSC) to remove oscillations of active power and an instantaneous active–reactive control (IARC) to mitigate the fluctuations of active and reactive power, simultaneously, are suggested. These methods are also effective to reduce the oscillations of the DC-link voltage. To track the desired unbalanced or harmonic reference currents, improved proportional resonant (PR) current controllers have been designed using the Bode frequency analysis. Simulation studies are carried out via Matlab/Simulink® software to verify the effectiveness of the suggested control strategies.

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A review on current reference calculation of three-phase grid-connected PV converters under grid faults

Cited by 24 publications

References 37 publications

Unbalance mitigation strategies in microgrids

Unbalance mitigation strategies in microgrids

A novel control strategy for power quality improvement in grid-connected solar photovoltaic system

Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions

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