PLL Synchronization Method Based on Second-Order Generalized Integrator for Single Phase Grid Connected Inverters Systems during Grid Abnormalities

Ikken, Naima; Bouknadel, A.; Haddou, Ahmed; Tariba, Nour-Eddine; Omari, Hafsa El; Omari, Hamid El

doi:10.1109/wits.2019.8723856

Cited by 21 publications

(18 citation statements)

References 10 publications

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“…The PLL is used for synchronizing and monitoring the grid. The phase angle of the grid voltage must be calculated in real time to define the power ratio between the grid and the inverter [28]. In this investigation, the second-order generalized integrator (SOGI)based phase-locked loop (PLL) is implemented (Figure 13) because it presents harmonic immunity, a fast tracking accuracy, and a rapid dynamic response [6].…”

Section: Phase-locked Loop (Pll)mentioning

confidence: 99%

“…The phase detector is composed of an orthogonal signal generator and obtains the Park transform of the waves to detect the components q and d in the rotating reference frame. For the orthogonal signal generator, a second-order generalized integrator (SOGI) [28] is used, as shown in Figure 14. The input signal is the voltage of the power grid.…”

Section: Phase-locked Loop (Pll)mentioning

confidence: 99%

“…where x = 2kω n T s , y = (ω n T s ) 2 , ω n is the estimated grid frequency, T s is the sampling time, and k is the gain that affects the SOGI bandwidth [28].…”

Section: Phase-locked Loop (Pll)mentioning

confidence: 99%

“…Using control theory and using a PI controller as a low-pass filter to keep the error at zero, the closed-loop transfer function of the PLL [28] is given by:…”

Section: Phase-locked Loop (Pll)mentioning

confidence: 99%

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Design of an On-Grid Microinverter Control Technique for Managing Active and Reactive Power in a Microgrid

et al. 2021

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This paper presents the design and implementation of an on-grid microinverter control technique for managing active and reactive power based on a dq transformation. The system was implemented in a solar microinverter development kit (Texas Instruments—TMDSSOLARUINVKIT). This microinverter has two stages: DC-DC and DC-AC. The DC-DC stage contains an active clamp flyback converter, where the maximum power point tracking (MPPT) of the solar panel is obtained with a current-based incremental conductance algorithm. The DC-AC stage comprises a dual-buck inverter in which voltage-, current-, and phase-tracking control loops are implemented to control the active and reactive power. These techniques were simulated in MATLAB using the proposed mathematical model and experimentally validated in the solar development kit. The results show that the simulated model behaved similarly to the real system, and the control techniques presented good performance. The maximum power point (MPP) of the solar panel was monitored in the DC-DC stage using a current reference provided by the incremental conductance MPPT algorithm and was regulated by a 2P2Z control. The algorithm is robust against continuous changes in irradiance, as it quickly follows the ideal power and continually operates at a point close to the MPP. In addition, the active and reactive power control in the DC-AC stage enables the microinverter to supply the maximum active power. Moreover, the microinverter supplies reactive power according to a defined reference and within the established limits. The proposed mathematical model of the microinverter can be used to design new control techniques and other microinverter topologies. In addition, this active and reactive power-control technique can be implemented in low-power and low-cost microinverters to successfully maintain power quality in small microgrids.

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Section: Phase-locked Loop (Pll)mentioning

confidence: 99%

Section: Phase-locked Loop (Pll)mentioning

confidence: 99%

“…where x = 2kω n T s , y = (ω n T s ) 2 , ω n is the estimated grid frequency, T s is the sampling time, and k is the gain that affects the SOGI bandwidth [28].…”

Section: Phase-locked Loop (Pll)mentioning

confidence: 99%

“…Using control theory and using a PI controller as a low-pass filter to keep the error at zero, the closed-loop transfer function of the PLL [28] is given by:…”

Section: Phase-locked Loop (Pll)mentioning

confidence: 99%

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Design of an On-Grid Microinverter Control Technique for Managing Active and Reactive Power in a Microgrid

et al. 2021

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“…A second‐order generalized integrator based PLL recently investigated by Ikken et al. used a strategy to test its ability to create orthogonal tension system in single‐phase inverters [24].…”

Section: Introductionmentioning

confidence: 99%

Phase shift control and controller area network assisted proportional resonant control for grid integration of single phase voltage source inverters

Nirmal

Sivarajan

Jasmin

2021

IET Power Electronics

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Grid integration of inverters using renewable sources of energy is essential for providing a secure and clean source of power supply. Many techniques developed so far control the grid current to realize the regulation of power flow to the power grid. However, implementation of communication assisted synchronization methods for single-phase full-bridge inverters is not found to be discussed in the literature. The focus of this research is to conceptualize, simulate, and implement two control techniques, namely Phase Shift Control (PSC) and Controller Area Network Assisted Proportional Resonant Control (CANAPRC) for single-phase inverters. In the PSC method, the inverter injects the desired real power into the grid by controlling the phase angle between converter and grid voltages. A low complexity synchronization procedure was adopted using single-phase PLL to generate a reference voltage signal using the PSC method. In contrast, the CANAPRC method outputs a current reference created by the resonant controller using a communication network. The inverter can pump the required real and reactive power to the grid with reduced harmonics, enhanced power-sharing and transient stability using the two strategies. Simulations in MATLAB R2016a analyze the two models out effectively. Prototype models validate the proposed control strategies.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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A novel time delay‐based phase‐locked loop with improved anti‐harmonic interference performance for grid synchronization

Liu

Zhang

et al. 2023

Circuit Theory & Apps

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SummaryThe time delay unit‐based PLLs (TD‐PLLs) are widely used in grid synchronization in single‐phase power systems. However, the TD‐PLL is vulnerable to frequency variations and harmonic disturbances, leading to grid synchronization failures. Analysis shows that the performance degradation is due to the inability to obtain the variation of the input signal frequency. This paper proposes a new time delay‐based phase‐locked loop called immune to double frequency component TD‐PLL (IDFC‐TD‐PLL) based on a feedback structure to accurately capture the variation of input signal frequency, which can improve the dynamic performance and the performance against harmonic interference. Simulations and experiments have evaluated the performance of the proposed phase‐locked loop, demonstrating its superior accuracy and dynamic performance compared to the phase‐locked loops referred in the paper.

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PLL Synchronization Method Based on Second-Order Generalized Integrator for Single Phase Grid Connected Inverters Systems during Grid Abnormalities

Cited by 21 publications

References 10 publications

Design of an On-Grid Microinverter Control Technique for Managing Active and Reactive Power in a Microgrid

Design of an On-Grid Microinverter Control Technique for Managing Active and Reactive Power in a Microgrid

Phase shift control and controller area network assisted proportional resonant control for grid integration of single phase voltage source inverters

A novel time delay‐based phase‐locked loop with improved anti‐harmonic interference performance for grid synchronization

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