Results 1 to 10 of about 3,882,562 (249)
Energy Reports, 2023 With the high ratio of distributed generation (DG) linked to power system via converters, power system stability is degraded in terms of inertia and damping.
Lei Wang +4 more
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A control strategy for a grid-connected virtual synchronous generator with virtual impedance
Energy Reports, 2023 Virtual synchronous generator (VSG) can simulate synchronous generator turning and damping characteristics, which can further improve the penetration rate of renewable energy in the grid.
Min’an Tang, Xilin Liu
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Accurate Reactive Power-Sharing Using Modified Droop Method Based on Virtual Impedance Control in the Islanded Microgrids [PDF]
هوش محاسباتی در مهندسی برق, 2023 In the islanded microgrids, distributed energy sources are responsible for power-sharing, and accurate power-sharing is essential among these microgrids.
Monir Ashrafi +3 more
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Virtual Biopsy by Electrical Impedance Spectroscopy in Barrett’s Carcinoma [PDF]
Journal of Gastrointestinal Cancer, 2021 Abstract Purpose Early detection of adenocarcinomas in the esophagus is crucial for achieving curative endoscopic therapy. Targeted biopsies of suspicious lesions, as well as four-quadrant biopsies, represent the current diagnostic standard.
Sandra Blößer +9 more
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Adaptive Grid Impedance Shaping Approach Applied for Grid-Forming Power Converters
IEEE Access, 2022 This paper proposes an adaptive grid impedance shaping approach, implemented through a variable structure virtual impedance control strategy (VS-VIS), to improve the power flow control of grid-forming power converters (GF-PC).
Ricardo Lucio de Araujo Ribeiro +3 more
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Zhongguo dianli, 2021 Using virtual impedance technology to optimize the double closed-loop control structure can improve the equivalent output impedance of the inverter to be inductive and enhance the accuracy of power distribution by traditional inductive droop control ...
Wentao MA, Jinmei WANG, Yongqi WANG
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Virtual Training Laboratory for Primary Impedance Metrology
IEEE Transactions on Instrumentation and Measurement, 2023 This article presents the concept and some aspects of the physical implementation of a virtual training laboratory (VTL) in the field of primary impedance metrology. The creation of a VTL provides a novel method of disseminating metrological knowledge and expertise in a practical way and at a low cost. It will expose new users to the live experience of
Janusz Kaczmarek +9 more
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IEEE Access, 2022 Low frequency oscillation (LFO) incidents may occur in coupled system composed of electric multiple units (EMUs) and traction network, which threaten the safety and stability of EMUs and traction power supply system.
Xuesong Zhou +3 more
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Parallel inverters control strategy based on adaptive virtual impedance
Journal of Hebei University of Science and Technology, 2023 In the low-voltage microgrid, the connection lines between parallel inverters are different due to the different length and loss, and the active power of the parallel inverters cannot be evenly distributed under the conventional droop control.
Yonggang LI, Yepeng WANG, Yuxia JIANG
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IEEE Transactions on Smart Grid, 2022 An islanded microgrid (MG) including low-inertia converter-based distributed generations (DGs) is subjected to instability. The virtual inertia concept was proposed to alleviate the stability issues by imitating the synchronous generators behavior. This paper spotlights on the optimization of virtual synchronous generator (VSG) parameters and virtual ...
Bahram Pournazarian +4 more
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