Results 31 to 40 of about 22,474,821 (353)
EnergiesAn increase in renewable energy generation in the microgrid can cause voltage oscillation problems. To address this issue, an equivalent circuit of the microgrid was established, including a synchronous generator, grid-connected inverter, and constant ...
Mingming Shi +4 more
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Analysis of the Current Electric Battery Models for Electric Vehicle Simulation
Energies, 2019 Electric vehicles (EVs) are a promising technology to reduce emissions, but its development enormously depends on the technology used in batteries. Nowadays, batteries based on lithium-ion (Li-Ion) seems to be the most suitable for traction, especially ...
Gaizka Saldaña +4 more
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Stability Assessment of A Radial Grid With Power Converters
IEEE Open Journal of Power Electronics, 2022 The increase proportion of power converters causes stability problems in the radial grid. To address these issues, this paper firstly proposes a unified modeling procedure and applies it to two types of converters. Secondly, the impedance models are used
Xingqi Liu +7 more
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Stability analysis of grid-following converter considering DC side dynamics
电力工程技术DC side dynamics are ignored in most of the research on grid-connected converter, which is dealt as a constant voltage source. In this case, the analysis result of small-signal stability is affected to some extent.
ZHAO Yujing +3 more
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Impedance Modeling and Analysis for DFIG-Based Wind Farm in SSO Studies
IEEE Access, 2020 Several models were developed in the literatures for studying the system impedance characteristics during sub-synchronous oscillations (SSO). However, the doubly-fed induction generator (DFIG) impedance presents a 2 × 2 matrix with the frequency ...
Ping Ju +3 more
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IEEE Access, 2018 Bolted joint are among the key components that enable the robust assembly of a wide variety of structures. However, due to wear and tear over time, bolted joint may loosen, and if not detected in its early stages, can lead to devastating results.
Furui Wang, S. Ho, L. Huo, G. Song
semanticscholar +1 more source
Low-Frequency Stability Analysis of Power Electronic Traction Transformer Based Train-Network System
CSEE Journal of Power and Energy SystemsPower electronic traction transformers (PETTs) will be increasingly applied to locomotives in the future for their small volume and light weight. However, similar to conventional trains, PETTs behave as constant power loads and may cause low-frequency ...
Yi Hong +3 more
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Energies, 2020 This paper develops the impedance models of grid-connected converters under the virtual synchronous generator (VSG) strategy with a cascaded inner control loop and analyzes the system stability of VSG controlled converters with different kinds of weak ...
Yunyang Xu +3 more
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Modeling high impedance connecting links and cables below 1 Hz
, 2012 High impedance connecting links and cables are modeled at low frequency in terms of their impedance to ground and to neigbouring connecting links. The impedance is usually considered to be the parallel combination of a resistance and a capacitance. While
Giachero, Andrea +3 more
core +1 more source
IEEE Access, 2018 This paper proposes a small-signal stability analysis method for the three-phase multifunctional grid-connected inverter (MFGCI) system with an unbalanced local load based on impedance modeling.
Wei Jin +4 more
doaj +1 more source