Results 31 to 40 of about 697,778 (299)

Impedance Characteristics and Harmonic Analysis of LCL-Type Grid-Connected Converter Cluster

Energies, 2022
This study addresses the output impedance model of the LCL-type grid-connected converter considering the dead-time effects and the digital control delay.
Xiaojie Zhou, Dezhi Xu, Yourui Huang
doaj   +1 more source

A study of harmonic spatial propagation along AC power lines of meshed power systems

IET Circuits, Devices and Systems, 2022
Severe harmonics propagation in power systems may result in increased power losses and equipment damages. In this paper, an elliptic formula is derived to analyse the harmonic spatial distribution not only at the substations but also along the power ...
Chengxi Liu, Zhen Gong, Filipe Faria da Silva, Qiupin Lai, Pan Hu   +4 more
doaj   +1 more source

Non-Uniform Time Sampling for Multiple-Frequency Harmonic Balance Computations [PDF]

, 2013
A time-domain harmonic balance method for the analysis of almost-periodic (multi-harmonics) flows is presented. This method relies on Fourier analysis to derive an efficient alternative to classical time marching schemes for such flows.
Dufour, Guillaume, Gallard, François, Puigt, Guillaume, Guédeney, Thomas, Gomar, Adrien, Sicot, Frédéric   +5 more
core   +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

Research on the Performance Boundaries and Improvement Strategies of Oscillation Suppression in Continuously Adjustable Phase-Shifting Transformer [PDF]

Dianli jianshe
[Objective] To enhance the sub-synchronous oscillation suppression capability under high proportion of power electronic equipment conditions in power grids， promote the application of continuous tunable phase shifters in power flow regulation and ...
DU Jingyan, CHEN Junjie, LIN Jinjiao, WANG Chuyang
doaj   +1 more source

Designing Passive Harmonic Filter of Electric Propulsion System on Tanker Ship [PDF]

, 2018
Harmonic is a frequency defect that have some negative effect to the electrical network system. In a ship, electrical network system are interconnected to each other to another electrical consumer device.
Zaman, Muhammad Badrus; Department of Marine Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Satrio, Faisal Muhammad, Semin, Semin; Department of Marine Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Kusuma, Indra Ranu; Department of Marine Engineering, Faculty of Marine Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111   +3 more
core   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

An n^th Harmonic Current Suppression Method Based on the Impulse Current PWM Technique for a Multi-Phase Permanent Magnet Synchronous Motor Fed with a Current Source Inverter

Energies, 2022
Among the existing harmonic current suppression methods, it is difficult and complicated to suppress any nth harmonic current accurately for multi-phase permanent magnet synchronous motors (PMSMs).
Chao Chen, Zhen Chen, Congzhe Gao, Jing Zhao, Xiangdong Liu, Xiaoyong Sun   +5 more
doaj   +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

Epigenetic heterogeneity and plasticity in therapy‐induced tumor states through single‐cell multi‐omics

Molecular Oncology, EarlyView.
Single‐cell multi‐omics reveals epigenetic heterogeneity across therapy‐adaptive tumor states, including quiescent/dormant, drug‐tolerant persister, and EMT‐like phenotypes. By linking regulatory features with state‐associated biomarkers, these approaches inform biomarker‐guided therapeutic strategies for evolving tumors.
Hee Jung Kim, Hwiyeong Lee, Jin Hong, Daechan Park   +3 more
wiley   +1 more source