Results 51 to 60 of about 3,032 (260)

Unveiling Exsolution‐Induced Giant Electronic and Magnetic Property Changes in Non‐Stoichiometric Titanate Perovskite Thin Films

Advanced Materials, EarlyView.
A giant insulator to metal transition and emergent superparamagnetism are revealed by nanoparticle exsolution in non‐stoichiometric titanate perovskite thin films. By combining transport, synchrotron spectroscopy, and first‐principles calculations, this work reveals how defect reconfiguration and lattice reconstruction fundamentally reshape electronic ...
Sungil Kim, June Ho Lee, Yaolong Xing, Dongchang Kim, Haeseong Jeong, Mongjun Jeong, Manuel Valvidares, Stuart S. P. Parkin, Sang Ho Oh, Donghwa Lee, Hyojin Yoon, Hyeon Han   +11 more
wiley   +1 more source

ADALINE generalized integrator based control to mitigate the power quality issues in grid connected solar PV systems

AIP Advances
This paper presents a control strategy for a grid-connected solar photovoltaic (PV) system that effectively addresses power quality issues arising from various grid conditions and load types.
Priyank Nema, Sivasankaran V
doaj   +1 more source

Hybrid vector modulated model predictive control of bidirectional voltage source converter under unbalanced grid voltages

Systems Science & Control Engineering
For the power control problem of a bidirectional voltage-source converter, because only one voltage vector is applied at each control period, the traditional model predictive direct power control strategy brings in high harmonic content. In this paper, a
Zhichao Zhao, Licheng Wang, Jin Xiong, Zahoor Ahmed   +3 more
doaj   +1 more source

Reprogramming the Immunosuppressive Microenvironment in Triple‐Negative Breast Cancer via FAP‐Targeted Nanoprobes for Multimodal Imaging and Photothermal Therapy

Advanced Materials, EarlyView.
Targeting cancer‐associated fibroblasts (CAFs) with fibroblast activation protein (FAP)‐directed nanoprobes for multimodal imaging and photothermal remodeling of the immunosuppressive microenvironment to enhance immunotherapy in triple‐negative breast cancer (TNBC).
Ling Zhan, Yanhong Chen, Jingjing Hu, Chunting Wang, Huanhuan Liu, Defan Yao, Dengbin Wang   +6 more
wiley   +1 more source

Dynamic Modeling and Robust Controllers Design for Doubly Fed Induction Generator-Based Wind Turbines under Unbalanced Grid Fault Conditions

Energies, 2019
High penetration of large capacity wind turbines into power grid has led to serious concern about its influence on the dynamic behaviors of the power system.
Imran Khan, Kamran Zeb, Waqar Ud Din, Saif Ul Islam, Muhammad Ishfaq, Sadam Hussain, Hee-Je Kim   +6 more
doaj   +1 more source

An application of four‐wire grid‐forming power inverter in unbalanced distribution network

IET Generation, Transmission & Distribution, 2023
The modelling of a three‐phase four‐leg four‐wire grid‐forming inverter in a low voltage distribution system 18‐bus European Cigré under unbalanced conditions in an autonomous distribution network is presented.
Jéssica S. Döhler, Raul P. Mota, João Antônio G. Archetti, Dalmo C. Silva Júnior, Cecilia Boström, Janaína G. Oliveira   +5 more
doaj   +1 more source

Hydrophobic MFI‐Type Zeolites via Alkali‐Cation‐Induced Defect Healing: Implications for Adsorbent and Catalyst Design

Advanced Materials, EarlyView.
Sub‐stoichiometric amounts of Na+ or K+ enhance defect healing during Silicalite‐1 (MFI) and TS‐1 calcination by promoting Si–O–Si annealing and healing framework vacancies. The resulting defect‐free zeolites are more hydrophobic and show improved butanol/water separation and improved activity and selectivity in the epoxidation of 1‐hexene, offering a ...
Christos Kanteler, Pau Ferri, Francisco Javier Escobar‐Bedia, Álvaro Mayoral, Alejandro Vidal‐Moya, Richard Kendra, Chen Lei, Miguel Palomino, Fernando Rey, Lukáš Grajciar, Christopher James Heard, Pedro Serna, Mercedes Boronat, Cristina Martínez, Manuel Moliner   +14 more
wiley   +1 more source

Control of Three-phase Four-leg Micro-grid Inverter in Islanding Mode

Kongzhi Yu Xinxi Jishu, 2013
Off-grid operation is one of the significant characteristics of micro-grid. In off-grid mode, unbalanced loads will cause voltage unbalance and degrade the performance of micro-grid.
TAN Lanlan
doaj  

Compensation of negative sequence stator flux of doubly-fed induction generator using polar voltage control-based direct torque control under unbalanced grid voltage condition

The Journal of Engineering, 2015
This study proposes a polar voltage control-based direct torque control method to reduce the effects of unbalanced grid voltage on doubly-fed induction generator (DFIG)-based wind turbine system.
Badrinarayan Bansilal Pimple, Vishal Yashwant Vekhande, Baylon G. Fernandes   +2 more
doaj   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

Advanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park, Kate Chen, Su Min Ahn, Hengquan Guo, Cy Fujimoto, Jong‐Ho Choi, Lynda Amichi, Danah Kim, Seung Geol Lee, Xiaojing Wang, Jacob S. Spendelow, Sun Young Kang, Panagiotis Bexis, Eun Joo S. Park, Yu Seung Kim   +14 more
wiley   +1 more source