Grid-Connected Renewable Energy Sources: A New Approach for Phase-Locked Loop with DC-Offset Removal

Bany Issa, Mohammad A.; Al Muala, Zaid A.; Bello Bugallo, Pastora M.

doi:10.3390/su15129550

Cited by 4 publications

(6 citation statements)

References 22 publications

(35 reference statements)

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“…The gain values for tuning S1 are displayed in Table 1. The values of the gains of the loop filter were calculated as in [33], but in this case, ζ = 1 and the loop filter is limited to a PI controller. The value of k αβ = 1.4142 is chosen according to [24].…”

Section: Response To Sintonization 1 (S1)mentioning

confidence: 99%

A Three-Phase Synchronization Algorithm Based on a Modified DSOGI with Adjustable Re-Filtering

Herrejón-Pintor,

Melgoza-Vázquez,

Monroy-Morales

2023

Energies

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The precise calculation of phase angle, voltage magnitude and frequency is crucial for the effective control of power electronic inverters connected to an electrical power system. The phase-locked loop (PLL) is a commonly employed method for measuring these variables. Nevertheless, the reliability of this measurement is influenced by transient events in the electrical power system and varies depending on the nature of the event and the specific design of the PLL. Notably, PLLs utilizing the double second-order generalized integrator are widely adopted for power converter synchronization purposes. This article proposes a three-phase PLL, which is based on the single-phase version previously reported by the authors. The proposed PLL, based on an alternative integrator approach, allows a fine adjustment of the tolerance to disturbances in the input voltage thanks to a second feedback gain in its pre-filter. It is reasonable to anticipate that the three-phase PLL will exhibit similar strengths to the single-phase version; however, in the three-phase case, an additional integrator is involved in pre-filtering the quadrature signals, and the double integrator is not employed as the quadrature signal generator. The performance of the proposed PLL is assessed by comparing it to other PLLs based on the second-order integrator, using a processor-in-the-loop approach.

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Section: Response To Sintonization 1 (S1)mentioning

confidence: 99%

A Three-Phase Synchronization Algorithm Based on a Modified DSOGI with Adjustable Re-Filtering

Herrejón-Pintor,

Melgoza-Vázquez,

Monroy-Morales

2023

Energies

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“…Synchronization techniques are employed to achieve fast and accurate grid synchronization between power electronics converters and the grid. Phase Locked Loop (PLL) algorithms are probably the most popular and widely used techniques for grid synchronization owing to their robustness and effectiveness [5][6][7][8][9]. Several research were done in designing PLLs for grid synchronization [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…In general, the PLL consists of three main parts [6,8,10,16]; the Phase Detector (PD), the Loop Filter (LF), and the Voltage-Controlled Oscillator (VCO) (see Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

“…Synchronization issues were brought on by the presence of (DC-offset) in the PLL's input, which can be summed up as causes oscillations in the estimated fundamental grid phase, frequency, and amplitude. Additionally, the stability of the closed-loop system will be affected [6,9,11]. The use of Analog/Digital (A/D) conversions, digital controllers, the implementation of control algorithms in microcontrollers, sensors offsets, geomagnetic events, and grid failures can all contribute to DC-offset in grid synchronization [6,11].…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the stability of the closed-loop system will be affected [6,9,11]. The use of Analog/Digital (A/D) conversions, digital controllers, the implementation of control algorithms in microcontrollers, sensors offsets, geomagnetic events, and grid failures can all contribute to DC-offset in grid synchronization [6,11].…”

Section: Introductionmentioning

confidence: 99%

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Simple solution of DC-offset rejection based phase-locked loop for single-phase grid-connected converters

Bany Issa,

Al Muala,

Bello Bugallo

2024

Renew. Energy Environ. Sustain.

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Distributed Generators (DG) systems based on Renewable Energy Sources (RES) such as hydro, wind, and solar power plants have been spread widely due to their lower cost and the advanced capability of connecting them with the grid. The power generated from the DG must be shaped to be interfaced with the grid employing power electronics converters. The grid-connected power electronics converters must be synchronized with the grid (i.e., the same fundamental component of the grid frequency, phase, amplitude, and sequence). Synchronization techniques are employed to achieve accurate and fast grid synchronization between the converter and the grid. The existence of (DC-offset) in the input of Phase Locked Loop (PLL) caused synchronization problems as it causes oscillations in the estimated fundamental grid phase, frequency, and amplitude. In addition, the closed-loop system stability can be affected. This work proposes a simple technique for grid synchronization based on PLL with a phase angle correction. The proposed method was developed using Transfer Delay (TD) and Delay Signal Cancelation (DSC) operators; then, the small single model and stability analysis was employed. Several scenarios were developed to compare the proposed method with previous methods using MATLAB/Simulink tool. The scenarios involve introducing phase jumps, DC offsets, and amplitude changes to the grid voltage. Additionally, the grid frequency was also changed. The results show that the proposed PLL can solved the DC-offset problem using any delay time and fully synchronized with the grid. Moreover, the proposed PLL has the fastest dynamic response and shortest synchronization time over the other methods from literature.

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Thermoeconomic Evaluation and Sustainability Insights of Hybrid Solar–Biomass Powered Organic Rankine Cycle Systems: A Comprehensive Review

Alvi,

Guan,

Imran

2024

Biomass

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Hybrid solar–biomass organic Rankine cycle (ORC) systems represent a promising avenue for sustainable energy production by combining abundant but intermittent solar energy with the reliable biomass energy. This study conducts a detailed thermodynamic and economic assessment of these hybrid systems, focusing on their potential to enhance energy efficiency and reduce greenhouse gas emissions. The study also evaluates the performance of various working fluids, identifying optimal configurations for different operating conditions. A key finding is that the hybrid system, with an optimized solar–biomass ratio, achieves up to a 21 to 31% improvement in efficiency and a 33% reduction in levelized cost of electricity (LCOE) compared to solar-only systems. Additionally, the study examines case studies of real-world applications, offering insights into the scalability and cost-effectiveness of these systems in regions with high solar irradiation and biomass availability. These results underline the need for continued technological innovation and policy support to promote widespread adoption of hybrid ORC systems, particularly in the context of global decarbonization efforts.

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Grid-Connected Renewable Energy Sources: A New Approach for Phase-Locked Loop with DC-Offset Removal

Cited by 4 publications

References 22 publications

A Three-Phase Synchronization Algorithm Based on a Modified DSOGI with Adjustable Re-Filtering

A Three-Phase Synchronization Algorithm Based on a Modified DSOGI with Adjustable Re-Filtering

Simple solution of DC-offset rejection based phase-locked loop for single-phase grid-connected converters

Thermoeconomic Evaluation and Sustainability Insights of Hybrid Solar–Biomass Powered Organic Rankine Cycle Systems: A Comprehensive Review

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