Results 11 to 20 of about 4,684 (264)

Quantitative damping reshaping method based on equivalent RLC circuits using an active damper

IET Power Electronics, 2023
Large scale power electronic converters in renewable energy power system (REPS) constitute a complex multi‐scale high‐order non‐linear network. Harmonic amplitude amplification of specific frequency (e.g.
Fei Li, Qiang Feng, Yichao Wang, Hanyu Wang, Mingyao Ma, Xing Zhang   +5 more
doaj   +1 more source

High Frequency Resonance Suppression Strategy of Three-Phase Four-Wire Split Capacitor Inverter Connected to Parallel Compensation Grid

Energies, 2022
With the continuous penetration and development of renewable energy power generation, the distributed grid and the microgrid are becoming increasingly important in modern power systems.
Guoli Feng, Zhihao Ye, Yihui Xia, Heng Nian, Liming Huang, Zerun Wang   +5 more
doaj   +1 more source

Magnitude-Reshaping Strategy for Harmonic Suppression of VSG-Based Inverter Under Weak Grid

IEEE Access, 2020
Driven by inertial demand from the grid, the virtual synchronous generators (VSGs) are widely utilized in distributed generation systems. However, harmonic sources in the distributed generation systems with high grid impedance will cause grid voltage ...
Wen Yang, Mingyu Wang, Saddam Aziz, Ali Yousaf Kharal   +3 more
doaj   +1 more source

Bandwidth aspects in second generation current conveyors [PDF]

, 2002
This paper discusses bandwidth problems associated with second-generation current conveyors (CCII). In particular, our work is centered in high-capacitance applications, and has been oriented for wireless optical links and applied physics.
Aguiar, R.L., Alves, L. N., Santos, D.M.
core   +2 more sources

Train Impedance Reshaping Method for Suppressing Harmonic Resonance Caused by Various Harmonic Sources in Trains-Network Systems With Auxiliary Converter of Electrical Locomotive

IEEE Access, 2019
With the development of electrified railway, harmonic resonance accidents occur from time to time. Based on the mechanism of resonance, a harmonic resonance suppression radical method by impedance reshaping is proposed.
Shihui Liu, Fei Lin, Xiaochun Fang, Zhongping Yang, Zhiwei Zhang   +4 more
doaj   +1 more source

Femtosecond nonlinear ultrasonics in gold probed with ultrashort surface plasmons [PDF]

, 2012
Fundamental interactions induced by lattice vibrations on ultrafast time scales become increasingly important for modern nanoscience and technology. Experimental access to the physical properties of acoustic phonons in the THz frequency range and over ...
A Devos, AV Scherbakov, B Koopmans, C de la Fuente, C Thomsen, C V. Korff Schmising, G Steinle-Neumann, G Tas, H Park, HY Hao, J Behari, JW Kim, K Sokolowski-Tinten, L Thevenard, M Getzlaff, M van Exter, ME Siemens, MR Armstrong, O Matsuda, OB Wright, P Nagpal, PA Mante, PJS van Capel, RM Bozorth, RW Rendell, T Saito, VV Temnov, VV Temnov, VV Temnov, X Tang, Y Hiki   +30 more
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Overview of DFIG-based Wind Power System Resonances under Weak Networks [PDF]

, 2017
The wind power generation techniques are continuing to develop and increasing numbers of Doubly Fed Induction Generator (DFIG)-based wind power systems are connecting to the on-shore and off-shore grids, local standalone weak networks, and also micro ...
Blaabjerg, Frede, Song, Yipeng
core   +2 more sources

High Frequency Resonance Damping of DFIG based Wind Power System under Weak Network [PDF]

, 2017
When operating in a micro or weak grid which has a relatively large network impedance, the Doubly Fed Induction Generator (DFIG) based wind power generation system is prone to suffer high frequency resonance due to the impedance interaction between DFIG ...
Blaabjerg, Frede, Song, Yipeng, Wang, Xiongfei   +2 more
core   +2 more sources

Admittance Reshaping Control Methods to Mitigate the Interactions between Inverters and Grid

Energies, 2019
With the increasing impedance coupling between inverters and grid caused by the phase-locked loop (PLL), traditional three-phase inverters suffer from the harmonic distortion or instability problems under weak grid conditions.
Ling Yang, Yandong Chen, An Luo, Kunshan Huai   +3 more
doaj   +1 more source

Resonance suppression and quality improvement control strategy for a three-phase grid-connected voltage-source inverter under weak grid conditions

Frontiers in Energy Research, 2023
The three-phase voltage-source grid-connected inverters suffer from grid-connected current quality problems due to system resonance caused by the under-damping characteristics of the filter and grid impedance, on the one hand, and the grid-connected ...
Zhi Zhang, Yiyun Li, Yiyun Li, Caomao Zhong, Zhaoyun Zhang   +4 more
doaj   +1 more source