Results 11 to 20 of about 123,509 (118)
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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Energies, 2018 Harmonic amplification for doubly-fed induction generator wind turbine systems (DFIG WTSs) will occur due to the existence of non-linear loads and reactive power compensation installation, and grid voltage and total grid current at the point of common ...
Zhen Xie, Lifan Niu, Xing Zhang
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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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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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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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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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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 Open Journal of Industry ApplicationsThe increasing penetration of converter-interfaced generation units results in a frequency-weak power system characterized by decreasing system inertia. Consequently, the angular frequency of the power system may deviate from its nominal value, with its ...
Anant Narula +5 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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IEEE AccessMain shaft bearing failures in wind turbines have drawn increasing attention due to their high maintenance costs and operational risks. While previous studies have primarily focused on mechanical causes or bearing currents induced by generator-side ...
Jian Zhao +4 more
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