Results 21 to 30 of about 610,393 (276)

Harmonic Suppression Method of Grid-Forming Inverter Based on Hybrid Impedance Reshaping Strategy

Abstract As a large number of power electronic devices and other nonlinear loads are connected to the power system, the harmonics generated by them cause great harm to the power quality of the power grid. At present, passive filter and active power filter are mainly used to deal with harmonic pollution.
Liang Meng, Xuekai Hu, Lei Li, Yilin Yin, Wanjun Lei   +4 more
openaire   +2 more sources

Radiation impedance control of brass resonators to reshape sounds with vowel spectral envelopes: a numerical study [PDF]

Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023
The application of active control to brass instruments brings many benefits to composers and performers, by expanding its sound possibilities. In this paper, we propose to simulate the connection of a static human vocal tract, downstream of the bell, so that the instrument radiates a vowel. To this end, we modulate the spectral envelope of the radiated
Martos, Vincent, Boutin, Henri, Hélie, Thomas, d'Andréa-Novel, Brigitte   +3 more
openaire   +3 more sources

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

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

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

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

Stability analysis of different control modes of grid-connected converters under different grid conditions

Frontiers in Energy Research, 2023
With the sustained popularity of renewable energy generation, high penetration of variable energies, e.g., wind and solar, is reshaping the form of power systems and weakening the strength of the grid.
Zhi Xu, Zhi Xu, Yanhui Qin, Yanhui Qin, Zian Li, Zian Li, Chunlei Jiao, Chunlei Jiao, Baoyu Zhai, Baoyu Zhai, Xiqiang Chang   +10 more
doaj   +1 more source

Suppression Strategy of Sub/Super-synchronous Oscillations in Doubly-Fed Wind Farm Based on SVG Additional Current Feedback Impedance Reshaping

Zhongguo dianli
Doubly-fed wind farm often interacts with the power grid, leading to sub/super-synchronous oscillations. To address the issue of limited adaptability in suppressing these oscillations using impedance reshaping methods, this paper proposes an impedance ...
Zejia WANG, Minxiao HAN, Yiwen FAN
doaj   +1 more source

Robust Control and Optimization Method for Single-Phase Grid-Connected Inverters Based on All-Pass-Filter Phase-Locked Loop in Weak Grid

Energies, 2022
In a distributed generation system, the all-pass-filter phase-locked loop (APF-PLL) is a commonly used method for grid synchronization. However, the coupling effect between APF-PLL and current control loop increases the risk of oscillation instability ...
Longyue Yang, Tian Cao, Huapeng Chen, Xinwei Dong, Shuyuan Zhang   +4 more
doaj   +1 more source