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Energy Reports, 2022 Voltage sag is an important problem that causes power quality degradation, and the premise of solving the problem of voltage sag is to detect the depth of voltage sag accurately and quickly. Based on the past research on voltage sag detection, this paper
Ziming Wang +4 more
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Simplified Second-Order Generalized Integrator - Frequency-Locked Loop
Advances in Electrical and Electronic Engineering, 2019 Second-Order Generalized Integrator -- Frequency-Locked Loop (SOGI-FLL) is a popular technique available in the grid synchronization literature. This technique uses gain normalization in the frequency locked-loop.
Hafiz Ahmed, Mohamed Benbouzid
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Application of the second order generalized integrator in digital control systems
Archives of Electrical Engineering, 2014 The paper describes second order generalized integrator (sogi) which is specialized in band-pass filtering and orthogonalization of periodic signals. Modifications of the structure and the influence of parameters on the system performance is described ...
Możdżyński Kamil +2 more
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Modeling, Tuning, and Performance Comparison of Second-Order-Generalized-Integrator-Based FLLs [PDF]
IEEE Transactions on Power Electronics, 2018 The second-order-generalized-integrator-based freq-uency-locked loop (SOGI-FLL) is a well-known tool for filtering and synchronization purposes in the power and energy applications. The SOGI-FLL, nevertheless, has a limited ability in rejecting the grid voltage disturbances. To deal with this problem, two advanced SOGI-FLLs have been proposed recently.
Saeed Golestan +2 more
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Design of feed detection sensor based on second order generalized integrator
Meikuang Anquan, 2023 The feed detection device plays an important role in ensuring gas overrun locking function in underground coal mine. How to effectively solve the feed detection misjudgment caused by external interference is still a difficult problem at present. To solve
BEN Hongwei +4 more
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Non-adaptive second-order generalized integrator for sinusoidal parameters estimation
International Journal of Electrical Power and Energy Systems, 2012 Abstract In this paper, a simple method for frequency, amplitude and phase estimation of a single sinusoidal signal is proposed. The approach described herein uses an orthogonal signals generator based on a Second-Order Generalized Integrator (SOGI).
Giuseppe Fedele
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Optimizing Sensorless Control in PMSM Based on the SOGIFO-X Flux Observer Algorithm [PDF]
SensorsIn the realm of sensorless control for a permanent magnet synchronous motor (PMSM), the flux observer algorithm is widely recognized. However, the estimation accuracy of rotor position is adversely impacted by the interference from DC bias and high-order
Rencheng Jin +3 more
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Energy Reports, 2022 For reducing the carbon emissions from utility sector, it is important to improve the efficiency of network and electrical loads. Current harmonics are responsible for the degradation of the system as well as load efficiency.
Amit V. Sant
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Machines, 2022 In order to realize sensorless control of permanent magnet synchronous motor (PMSM) with high performance in low speed region, a novel rotor position observer scheme based on finite control set model predictive control (FCS-MPC) is presented in this ...
Jie Gao +3 more
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Second order perturbation theory in general relativity: Taub charges as integral constraints [PDF]
Physical Review D, 2019 In a nonlinear theory, such as General Relativity, linearized field equations around an exact solution are necessary but not sufficient conditions for linearized solutions. Therefore, the linearized field equations can have some solutions which do not come from the linearization of possible exact solutions.
Altas, Emel, Tekin, Bayram
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