A Comprehensive Study of Orthogonal Signal Generation Schemes for Single Phase Systems

Gautam, Samir; Hassan, Waqas; Bhatta, Ayush; Lu, Dylan Dah-Chuan; Xiao, Weidong

doi:10.1109/icpee50452.2021.9358671

Cited by 6 publications

(2 citation statements)

References 34 publications

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“…In general, single-phase PLLs are more difficult to construct than three-phase PLLs because of the way to generate orthogonal signals are generated in the PD part of the PLL. Many techniques have been proposed in order to generate the orthogonal signal in the single-phase PLL [15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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

Bany Issa,

Al Muala,

Bello Bugallo

2023

Sustainability

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Renewable Energy Sources (RES) are widely used worldwide due to their positive effect on the environment, being sustainable, low cost, and controllable. The power generated from RESs must be configured to interface and perfectly synchronize with the grid by using Power Electronics Converters (PEC). A Phase-Locked Loop (PLL) is one of the most popular synchronization techniques used due to its speed and robustness. A growing issue that results in oscillations in the estimated fundamental grid phase, frequency, and voltage amplitude is the DC-offset in the input of the PLL. This study was developed to eliminate the DC-offset in the single-phase grid synchronization using Delay Signal Cancellation (DSC) and a fixed-length Transfer Delay (TD)-based PLL. Then, the small-signal model, stability analysis, and selection of controller gains were discussed. The proposed PLL was simulated using MATLAB/Simulink. Moreover, to evaluate the proposed method, several scenarios were developed in order to compare it with other powerful PLLs in terms of performance indicators such as settling time, frequency, and phase error. As a result, the proposed PLL has the fastest dynamic response, completely rejects the DC-offset effect, and fully synchronizes with the electrical grid.

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Section: Introductionmentioning

confidence: 99%

“…In ref. [16], the authors conducted a comprehensive comparison of seven orthogonal signal generator structures, considering five assessment criteria. Their analysis revealed that Transfer Delay (TD) and all-pass filters are the simplest approaches to generating an orthogonal signal.…”

Section: Introductionmentioning

confidence: 99%