Low-voltage Ride-through Methods for Grid-connected Photovoltaic Systems in Microgrids: A Review and Future Prospect

Kamil, Haval Sardar; Said, Dalila Mat; Mustafa, Mohd Wazir; Miveh, Mohammad Reza; Ahmad, Nasarudin

doi:10.11591/ijpeds.v9.i4.pp1834-1841

Cited by 5 publications

(4 citation statements)

References 25 publications

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“…Hence, all generic three-phase variables are converted into -frame with the simplified, amplitude-invariant Clarke transformation. Thus, the model of a three-phase inverter with a LCL filter is described in the -frame with the capacitor dynamics equation ( 1) and the inductance dynamics equation (2). (1)…”

Section: Research Methods 21 the Modelling Of Finite-control-set Model Predictive Control Of Voltage Source Inverter With Lcl Filtermentioning

confidence: 99%

“…This is evidenced by the global capacity of wind turbines and solar cells, which are increasing annually. However, unlike conventional power generation, RESs usually require a topologically power-source-dependent power converter to deliver their power to the grid [2]- [4]. Such power-converter-based-generators are often operating in parallel with the utility distribution system near the loads.…”

Section: Introductionmentioning

confidence: 99%

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Active damping method for voltage source inverter-based distributed generator using multivariable finite-control-set model predictive control

Jongudomkarn

Kampeerawat

2021

IJPEDS

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Despite its advantages, the LCL filter can significantly distort the grid current and constitute a substantially more complex control issue for the grid-connected distributed generators (DGs). This paper presents an active damping approach to deal with the LCL filter's oscillation for the finite-control-set model predictive control (FCS-MPC)-three-phase voltage source inverters (VSIs)-based DG. The new approaches use the multivariable control of the inverter side's filter current and capacitor voltage to suppress the LCL filter resonance. The proposed method has been tested in steady-state and under grid voltage disturbances. The comparative study was also conducted with the existing virtual resistance active damping approaches for an FCS-MPC algorithm. The study validates the developed control schemes' superior performance and shows its ability to eliminate lower-order grid current harmonics and decrease sensitivity to grid voltage distortion.

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Section: Research Methods 21 the Modelling Of Finite-control-set Model Predictive Control Of Voltage Source Inverter With Lcl Filtermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active damping method for voltage source inverter-based distributed generator using multivariable finite-control-set model predictive control

Jongudomkarn

Kampeerawat

2021

IJPEDS

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“…Grid-connected renewable energy systems play a crucial role in integrating clean energy sources into the existing power grid infrastructure. These systems enable the efficient utilization of renewable energy resources and facilitate the transition towards a more sustainable and environmentally friendly energy generation paradigm [1][2][3]. The deployment of grid-connected PV and wind turbine systems has seen remarkable growth worldwide, driven by advancements in technology, policy support, and the increasing global demand for clean energy.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Photovoltaic and Wind Turbine Grid-Connected Systems under LVRT Conditions

Muhamad Zahim Sujod,

Muhammad Muttaqin A. Rahim,

Nor Azwan Mohamed Kamari

et al. 2024

ARFMTS

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The integration of grid-connected renewable energy systems has gained significant attention and introduces several challenges and considerations. One of these challenges is ensuring the reliable and stable operation of these systems under various grid conditions. For example, faults at the grid could lead problems such as DC-link over-voltage and AC over-current that may cause disconnection or damage to inverter. This paper presents a comprehensive analysis of the performance of photovoltaic (PV) and doubly-fed induction generator (DFIG) wind turbine grid-connected systems under low voltage ride-through (LVRT) conditions. The study aims to investigate their behavior, and stability during LVRT events and provide insights for enhancing their grid integration capabilities. The PV and DFIG systems are modelled and simulated using MATLAB Simulink under three difference conditions, with and without using reactive current injection and DC chopper circuit. Various performance parameters, including grid voltage, grid current, DC-link voltage, active power, and reactive power, are analyzed to assess the system's behavior and compare their responses. The principal results reveal distinct performance characteristics of the PV and DFIG systems. The PV system shows higher overshoot currents, over-voltage, and significant drops in active power during fault occurrences, while the DFIG system exhibits lower overshoot currents and better stability in the DC-link voltage. Reactive power responses differ between the systems, with the PV system demonstrating a higher capability for support. The implementation of DC chopper shows more effective in the reduction of DC-link voltage and overshoot grid current in the PV system compared to the DFIG system.

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“…Sardar Kamil et al [13] reviewed the several control strategies for maintaining the low voltage ride through (LVRT) capability of grid-feeding converters, with their benefits and drawbacks, thereby presenting a comparative listing of various current control loops where vector control is chosen as the primary control with various rotor parameters as reference. In [14], stator flux orientation and Lyapunov theory are proposed as an LVRT solution with an enhanced control technique of stator powers exchanged between the DFIG and the grid.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy-Based EV Charging Station and DVR-Fed Voltage Compensation for a DFIG-Fed Wind Energy System during Grid Faults

Uthra

Suchitra

Babu

et al. 2022

International Transactions on Electrical Energy Systems

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In recent years, it can be seen that more and more wind energy systems are integrated to focus on developing a more reliable energy system. A doubly-fed induction generator is the most employed machine in wind energy systems having the advantages of variable speed operation, improved power quality, and high energy capture. In a wind energy conversion system (WECS), the generator’s capability to remain connected during short electric faults resulting in voltage sag is known as fault ride through (FRT). Over the last few years, electric vehicles have been providing a remarkable solution for many sustainability issues such as global warming, depletion of fossil fuel reserves, and emission of greenhouse gas that needs attention to detail. A voltage compensation using Dynamic Voltage Restorer and Electric Vehicle charging station both employing a fuzzy controller is proposed in this paper for sustaining FRT capability. The variation in the stator voltage is tracked and utilized to inject the necessary shortfall of voltage in the system via DVR or EV charging station for the intensity of the created voltage sag. Vehicle-to-grid unit of the electric vehicle charging station comes into action when voltage sag intensity is 0.9 p.u. to 0.51 p.u. Value of the nominal voltage and the DVR takes over when voltage sag falls between 0.5 p.u. and 0.2 p.u. Consequently, this voltage compensation regulates the other relative parameters like DC link voltage and active power and retains them within the permissible limits during the fault.

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Low-voltage Ride-through Methods for Grid-connected Photovoltaic Systems in Microgrids: A Review and Future Prospect

Cited by 5 publications

References 25 publications

Active damping method for voltage source inverter-based distributed generator using multivariable finite-control-set model predictive control

Active damping method for voltage source inverter-based distributed generator using multivariable finite-control-set model predictive control

Performance Analysis of Photovoltaic and Wind Turbine Grid-Connected Systems under LVRT Conditions

Fuzzy-Based EV Charging Station and DVR-Fed Voltage Compensation for a DFIG-Fed Wind Energy System during Grid Faults

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