Results 21 to 30 of about 397 (141)
Synchronization signal extraction method based on enhanced DSSOGI-FLL in power grid distortion
Systems Science & Control Engineering, 2018 With the development of new energy, three-phase grid connected converter has been widely applied. In order to meet the requirement of synchronous signals extraction under the condition of asymmetry, dc components and harmonic distortion, the positive and
Xuhu Ren +4 more
doaj +1 more source
Phase-Locked Loop Research of Grid-Connected Inverter Based on Impedance Analysis
Energies, 2018 In order to improve the phenomenon that a traditional phase-locked loop based on a double second-order generalized integrator (DSOGI-PLL) cannot track signal amplitude and phase accurately when the input signal contains DC components and high-order ...
Yuxia Jiang +3 more
doaj +1 more source
Improved harmonic detection method based on ip-iq theory [PDF]
E3S Web of Conferences, 2021 Based on the traditional ip-iq harmonic detection theory, the accuracy of harmonic detection is easily affected by the phase-locked loop (PLL) output phase error, and the single low-pass filter (LPF) detection accuracy and filtering effect cannot be ...
Yao Zhisen, Gao Guige
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A Straightforward Quadrature Signal Generator for Single-Phase SOGI-PLL With Low Susceptibility to Grid Harmonics [PDF]
, 2022 Suppressing the negative effects of grid voltage harmonics on the estimated frequency of a phase-locked loop (PLL) is a challenge in literature. This article proposes an easy-to-implement quadrature signal generator (QSG) to attenuate the oscillations on
Hamid Pairo +5 more
core +1 more source
IEEE Access, 2017 DC offset in the input of phase-locked loops (PLLs) is a challenging problem since it will result in fundamental frequency oscillations in the estimated phase and frequency.
Menxi Xie +3 more
doaj +1 more source
Analysis and modelling of a phase‐locked loop based on a novel cascade structure of SOGI
IET Power Electronics, 2023 In order to attenuate the oscillations on the estimated frequency of a phase‐locked loop (PLL), the effective suppression of low‐order harmonics in grid voltage is a crucial issue in three‐phase grid‐connected inverters, which use the standard PLL based ...
Shanwen Ke, Yuren Li
doaj +1 more source
, 2019 Frequency, amplitude, and phase information of the grid voltage are the main constraints for constructing a robust controller algorithm for grid connected applications under unbalanced and distorted voltage conditions.
Blaabjerg F. +6 more
core +2 more sources
, 2022 A second-order generalized integrator (SOGI) is a resonant regulator with a pair of complex-conjugate poles, and therefore, with infinite magnitude at its center frequency.
Al-Turki, Yusuf A. +4 more
core +1 more source
Design of single-phase phase-locked loop based on cascaded second-order generalized integrator
Dianzi Jishu YingyongDue to the inevitable existence of various DC bias and higher harmonics in the current power grid, the traditional phase-locked loop (PLL) based on Second-order Generalized Integrator (SOGI) is sensitive to DC bias and has insufficient filtering ability ...
Yu Cong +4 more
doaj +1 more source
1phi SOGI phase locked loop with secondary control path in grid-connected power converters [PDF]
, 2020 The performance of digitally controlled gridconnected power converters depends to a large extent on the synchronization strategy. Single-phase phase locked loops (PLL) with a second-order generalized integrator (SOGI) as quadrature signal generation ...
Lamo Anuarbe, Paula +5 more
core +1 more source