Results 1 to 10 of about 108 (89)
A Comparative Study of Smart THD-Based Fault Protection Techniques for Distribution Networks [PDF]
Sensors, 2023 The integration of Distributed Generators (DGs) into distribution systems (DSs) leads to more reliable and efficient power delivery for customers. However, the possibility of bi-directional power flow creates new technical problems for protection schemes.
Wael Al Hanaineh +2 more
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Comparison of SOGI-FLL with SOGI-PLL for Single-Phase Grid-Connected Inverters [PDF]
E3S Web of Conferences, 2019 Phase locked loop (PLL) is a feedback system that has a vital role in the grid-connected inverter systems. The primary function of PLL is to obtain various grid information, such as magnitude, frequency, and phase.
Royan +4 more
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A Secure Dual-Layer Fault Protection Strategy for Distribution Network with DERs: Enhancing Security in the Face of Communication Challenges [PDF]
SensorsEarlier protection methods mainly focused on using communication channels to transmit trip signals between the protective devices (PDs), with no solutions provided in the case of communication failure.
Wael Al Hanaineh +3 more
doaj +2 more sources
Applied Sciences (Switzerland), 2018 This paper studies a second order generalized integrator-frequency locked loop (SOGI-FLL) control scheme applicable for 3-phase alternating current/direct current (AC/DC) pulse width modulation (PWM) converters used in DC distribution systems.
Jin-Wook Kang +2 more
exaly +3 more sources
IEEE Transactions on Power Electronics, 2021 In recent years, single-phase frequency-locked loops (FLLs) are gaining more popularity as a signal processing and synchronization tool in a wide variety of engineering applications. In the power and energy area, a basic structure in designing the majority of available single-phase FLLs is the second-order generalized integrator-based FLL (SOGI-FLL ...
Saeed Golestan +2 more
exaly +3 more sources
Analysis and Suppression of MMC-RPC Circulating Current Based on SOGI-FLL
机车电传动, 2019 In view of the problems of the modular multi-level structure of the new railway power regulator (MMC-RPC), such as the serious influence of internal circulating current on the performance and efficiency of traction power supply system under the non-ideal
Pinggang SONG +3 more
doaj +1 more source
Hybrid SOGI-FLL-LUT Sensorless PMSM Drive With Back-EMF Distortion Elimination
IEEE Open Journal of Industry ApplicationsThere is growing demand for robust sensorless control of permanent magnet synchronous motors (PMSMs), but conventional methods using phase locked loops (PLLs) are computationally intensive and offer limited back-Electromotive Force (back-EMF) distortion ...
Pengwei Li, Zhe Zhang, Ali Bazzi
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Frequency-Tracking Algorithm Based on SOGI-FLL for Wireless Power Transfer System to Operate ZPA Region [PDF]
Electronics (Switzerland), 2020 The wireless power transfer (WPT) system has attracted attention for energy transmission without physical contact. However, a WPT system has low coupling condition because of a big air gap between transmitter and receiver coils. The low coupling condition has a high leakage inductance. To overcome this problem, we design a proposed system for WPT using
Do-Hyun Kim +2 more
exaly +2 more sources
Advanced SOGI-FLL Scheme Based on Fuzzy Logic for Single-Phase Grid-Connected Converters [PDF]
Journal of Power Electronics, 2014 This paper proposes a frequency-locked loop (FLL) scheme for a single-phase grid-connected converter. A second-order generalized integrator (SOGI) based on fuzzy logic (FL) is applied to this converter to achieve precise phase angle detection. The use of this method enables the compensation of the nonlinear characteristic of the frequency error, which ...
Thanh Hai Nguyen, Dong-Choon Lee
exaly +2 more sources
Direct power control based virtual flux using SOGI-FLL estimator for BDFIG-WEC system
Revue des Énergies Renouvelables, 2017 This paper deals with the control aspect of the brushless doubly fed induction generator, 'BDFIG' incorporating in a wind energy conversion system, 'WECS'.
A. Rahab, F. Senani, H. Benalla
doaj +2 more sources