Double Demodulation Type Open-Loop Synchronization Method for Single-Phase System

Gautam, Samir; Verma, Anant Kumar; Torres, Miguel; Mandal, S. K.; Taghizadeh, Seyedfoad; Akhtar, Md. Afroz

doi:10.1109/globconpt57482.2022.9938355

Cited by 1 publication

(5 citation statements)

References 17 publications

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“…They are QSG gain l , low-pass filter cut-off frequency 𝜔 c and the frequency estimation dynamics gain k f . Tuning of l can be done using formula (33). For this purpose, one-cycle settling time can be chosen as a good value for t s , that is, t s = 0.02.…”

Section: Parameter Tuningmentioning

confidence: 99%

“…For this purpose, one-cycle settling time can be chosen as a good value for t s , that is, t s = 0.02. This results in l = 400 according to (33). To tune the LPF cut-off frequency, analogy with the moving average filter can be considered.…”

Section: Parameter Tuningmentioning

confidence: 99%

“…Considering the dynamic response advantage of QT1-PLL, several PLL methods involving this architecture have been proposed in the literature [29][30][31][32][33][34][35]. However, most of them [29][30][31][32]35] are dedicated to the three-phase systems.…”

Section: Introductionmentioning

confidence: 99%

“…To the best of our knowledge, very few results are available for the single-phase case. In [33], a QT1-type open-loop estimator has been proposed for the single-phase system. This system is suitable for grid monitoring purposes.…”

Section: Introductionmentioning

confidence: 99%

“…Secondly, to provide harmonic robustness, a low‐pass filter is used as opposed to the conventionally used moving average filters. This lowers the computational burden of the proposed method over similar techniques from the literature [33, 34].…”

Section: Introductionmentioning

confidence: 99%

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A second‐order sliding mode control with active disturbance rejection for dynamic voltage restorers

Bagheri

Biricik

Ahmed

et al. 2023

IET Power Electronics

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This paper proposes an extended state observer (ESO)‐based second‐order sliding mode control (SMC) for dynamic voltage restorers (DVRs). Unlike the conventional first‐order SMC and some second‐order SMC (SOSMC) methods that suffer from chattering, the proposed control method can alleviate chattering and achieve finite‐time convergence. Chattering suppression (i.e. eliminating discontinuities) is achieved via continuous control input which is also used to generate the pulse width modulation signals. However, while removing the discontinuities in the control input, the performance of the control method is degraded when it is subjected to disturbances. Therefore, an active disturbance rejection (ADR) based on an ESO is proposed to enhance the performance. In addition, an advanced single‐phase phase‐locked loop (PLL) using linear observer and quasi‐type‐1 PLL is also proposed. The effectiveness of the proposed method is verified through simulation and experimental results which are compared with the results of the existing SMC methods applied to DVR.

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Section: Parameter Tuningmentioning

confidence: 99%

Section: Parameter Tuningmentioning

confidence: 99%