Results 31 to 40 of about 7,754,773 (292)

Circulating Current Suppression Method of Modular Multilevel Converter Based on SOGI Under Unbalanced Grid Conditions

工程科学与技术, 2023
The design and analysis of modular multilevel converter (MMC) is usually carried out under the condition of power grid balance, but the AC power grid is unbalanced in actual operation.
Shiding ZHOU, Shunliang WANG, Yingmin ZHANG, Junpeng MA, Lin FENG, Peng SHAN   +5 more
doaj  

Novel Fractional-Order Repetitive Controller Based on Thiran IIR Filter for Grid-Connected Inverters

IEEE Access, 2022
The proportional-integral multi-resonance repetitive controller (PIMR-RC) can track the reference current signal of the grid-connected inverter without static error, suppress low-frequency harmonic disturbance signals, and have a fast dynamic response ...
Qiangsong Zhao, Hongwei Zhang, Yang Gao, Shasha Chen, Yan Wang   +4 more
doaj   +1 more source

A Novel Grid-connected Harmonic Current Suppression Control for Autonomous Current Sharing Controller-based AC Microgrids [PDF]

, 2018
Since the power quality of feed-in grid current in a grid-connected microgrid (GCMG) can be influenced by a distorted utility grid, a novel feed-in grid harmonic current suppression control strategy is proposed in this paper.
Yajuan Guan, Lu, Jinghang, Guerrero, Josep M.; id_orcid, Wei Feng, Guan, Yajuan; id_orcid, Feng, Wei, Vasquez, Juan C.; id_orcid, Jinghang Lu, Juan C. Vasquez, Josep M. Guerrero   +9 more
core   +1 more source

A Hybrid Flexible Neutral Grounding Mode for Large Generators

Machines, 2022
Single-phase ground faults frequently occur at the generator stator windings. To realize reliable arc suppression, a dual-frequency active arc-suppression strategy has been widely considered.
Yikai Wang, Xin Yin, Xianggen Yin, Jian Qiao, Liming Tan   +4 more
doaj   +1 more source

Low Vibration Control Scheme for Permanent Magnet Motor Based on Resonance Controllers

Energies
For an electric locomotive traction motor, it is necessary to maintain relatively low vibration and noise due to the higher design standards. By using effective motor control strategies and implementing current harmonic suppression schemes, motor ...
Chi Ma, Wenzhong Xu, Mingtian Liu, Jianfeng Hong   +3 more
doaj   +1 more source

Harmonic Current Suppression Strategy for Grid-Connected PWM Converters With LCL Filters [PDF]

IEEE Access, 2019
As for a grid-connected PWM converter with LCL filter, harmonic current can flow freely into the grid-side inductor and filter capacitor, when the connected power grid is harmonically distorted. The fact lies in that the conventional control scheme has a little ability to suppress the grid current harmonics.
Rende Zhao, Qian Li, Hailiang Xu, Yansong Wang, Josep M. Guerrero   +4 more
openaire   +4 more sources

A harmonic suppression strategy based on harmonic impedance reshaping of grid-forming converters

Zhejiang dianli
With the large-scale integration of nonlinear loads and power electronic equipment into power systems， voltage distortion at the point of common coupling （PCC） has become increasingly prominent， severely affecting power quality and the safe and stable ...
WANG Kangping, ZHI Yuan, GE Pengjiang, LYU Jinli   +3 more
doaj   +1 more source

Current Harmonics From Single-Phase Grid-Connected Inverters—Examination and Suppression [PDF]

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2016
Environmental conditions and operational modes may significantly impact the distortion level of the injected current from single-phase grid-connected inverter systems, such as photovoltaic (PV) inverters, which may operate in cloudy days with a maximum power point tracking, in a non-unity power factor, or in the low voltage ride through mode with ...
Yang, Yongheng; id_orcid 0000-0002-1488-4762, Zhou, Keliang, Blaabjerg, Frede; id_orcid 0000-0001-8311-7412   +2 more
openaire   +1 more source

Loss of IGF‐1R impairs DNA‐PKcs recruitment to chromatin leading to defective end‐joining

Molecular Oncology, EarlyView.
IGF‐1R promotes radioresistance by facilitating DNA‐PKcs recruitment to chromatin, enabling non‐homologous end‐joining (NHEJ) repair of double‐strand breaks. Inhibition or loss of IGF‐1R disrupts this recruitment to damage sites, driving compensatory reliance on microhomology‐mediated end‐joining (MMEJ) repair.
Matthew O. Ellis, Jack V. Mills, Wojciech Niedzwiedz, Valentine M. Macaulay   +3 more
wiley   +1 more source

Research on Radial Vibration Model and Low-Frequency Vibration Suppression Method in PMSM by Injecting Multiple Symmetric Harmonic Currents

Actuators
Driven by frequency conversion, the windings of a three-phase permanent magnet synchronous motor (PMSM) contain both odd and even harmonic currents.
Le Kang, He Zhang, Jiakuan Xia, Meijun Qi, Yunqi Zhao   +4 more
doaj   +1 more source