Results 121 to 130 of about 6,734,093 (295)

Single-stage multiport AC–DC–DC converter with reactive power control capability

This article introduces a single-stage three-port ac–dc–dc converter designed to overcome the limitations observed in conventional two-stage converters used in grid-tied applications with multiple dc sources, such as hybrid energy storage systems and ...
Sun, Tengfei, He, Zhou, Deng, Fei, Xiao, Ziheng, Pan, Xuewei, Tang, Yi   +5 more
core   +1 more source

Chemical Bond‐Orchestrated Energy Depletion to Augment Lung Cancer Chemo‐Immunotherapy

Advanced Science, EarlyView.
This study grafted dichloroacetic acid (DCA) into perylenediimide (PDI) skeleton via ionic or covalent bond to create novel metabolic agent PDIC‐AC and PDIC‐NAC, explicitly elaborated the underlying energy metabolism and therapeutic mechanism, and developed a promising strategy for energy metabolism‐targeting chemo‐immunotherapy by chemical bond ...
Xuejie Zhao, Yuting Liu, Xiao Huang, Liwen Zhao, Chunli Li, Yongwei Huang   +5 more
wiley   +1 more source

Analysis and Optimization of the Loss Distribution for a Two Stage AC/DC Power Supply

IEEE Open Journal of Power Electronics
This paper presents the analysis and optimization procedure of a two-stage bidirectional AC/DC power supply. The exemplary power supply consists of a silicon carbide based active front end and a dual active bridge DC/DC converter.
Lukas Frager, Jens Friebe
doaj   +1 more source

Ultrafast Chemical Pre‐Sodiation of Pseudocapacitive CaV8O20 Anodes for High‐Performance Sodium‐Ion Capacitors

Advanced Science, EarlyView.
An ultrafast (2‐minute), gas‐free chemical pre‐sodiation strategy using Na‐benzophenone is developed to compensate for initial sodium loss in calcium vanadate (CaV8O20). Driven by the Ca2+ ‘spectator effect’, the framework enables highly reversible, quasi‐zero‐strain solid‐solution sodium storage, explicitly bypassing destructive conversion reactions ...
Neetu Bansal, Anwar Hussain, Radhey Shyam Yadav, Prakash Kumar Pathak, Minjoong Kim, Tobias Mattisson, Heejoon Ahn, Rahul R. Salunkhe   +7 more
wiley   +1 more source

Design and implementation of an AC voltage regulator based on series power semiconductor array [PDF]

, 2014
This thesis describes the use of an array of power semiconductors (series transistor array) and a buck-boost transformer in the design and implementation of a single phase AC voltage regulator.
Vandy, Francis
core  

Graphene‐Engineered Rear Interfaces Enable Efficient Flexible CZTSSe Solar Cells on Metal Foils

Advanced Science, EarlyView.
An atomically thin graphene interlayer stabilizes the rear interface of flexible CZTSSe solar cells by regulating interfacial stress, suppressing detrimental interfacial reactions, and reducing the back‐contact barrier. This strategy simultaneously improves photovoltaic performance and mechanical durability.
Yixiong Ji, Wentong Yang, Di Yan, Wei Luo, Jialu Li, Shi Tang, Jintao Fu, James Bullock, Mei Gao, Xin Li, Zhancheng Li, Jun Yang, Zhenghong Xiong, Yang Peng, Pengjun Zhao, Xingzhan Wei, Haofei Shi, Paul Mulvaney, Fangyang Liu   +18 more
wiley   +1 more source

Bidirectional Soft Catalysts for Improved Power Performance of Li‐S Batteries

Advanced Science, EarlyView.
A soft polymer‐metal catalyst is integrated into the binder to create a catalytically active microenvironment that accelerates bidirectional sulfur redox kinetics in lithium‐sulfur batteries. A model polyvinyl alcohol‐Cu catalyst enables high areal capacities at demanding current densities and stable cycling in pouch‐cell prototypes at 0.5 C, achieving
Maleesha M. Nishshanke, Petar Jovanovic, Swarit Dwivedi, Declan McNamara, Akshat Tanksale, Mahdokht Shaibani, Matthew Hill, Mainak Majumder   +7 more
wiley   +1 more source

Origin of Enhanced Efficiency and Reduced Roll‐Off in Organic Light‐Emitting Diodes Based on Pt(II) Complexes

Advanced Science, EarlyView.
Controlled Pt–Pt fine structure in square‐planar Pt(II) complexes governs metal–metal‐to‐ligand charge‐transfer (MMLCT) state formation, exciton dynamics, and organic light‐emitting diode performance. Short Pt–Pt contacts in Pt(fppz)2 enable coherent metal–metal coupling, sub‐microsecond emission and an external quantum efficiency of 29%, whereas ...
Atul Shukla, Sarah K. M. McGregor, Julian A. Steele, Innes K. Gale, Kiyoshi Miyata, Monirul Hassan, Christian McDonald, Romain J. Lepage, Eduardo Solano, Pilankatta K. Ramya, Cherumuttathu H. Suresh, Takumi Ehara, Chihaya Adachi, Ken Onda, Shih‐Chun Lo, Ebinazar B. Namdas   +15 more
wiley   +1 more source

Research on Integrated Power Supply Air Conditioning Unit for Urban Rail Transit Vehicles

Chengshi guidao jiaotong yanjiu
ObjectiveIn the auxiliary power supply system of urban rail transit vehicles, the energy consumption of air conditioning system accounts for a relatively high proportion.
Yu JIANG, Botao WEI, Yulong PENG, Pengfei LI, Hang YIN, Xiangsheng CHEN   +5 more
doaj   +1 more source

A unified control scheme for a bi-directional ac-dc converter with high power quality

, 2001
This paper presents the modeling, analysis, and design of a thyristor-based ac-dc converter, featuring bi-directional power flow and unity power factor at the ac side in both powering and regenerating modes.
Yip, SC, Hui, SYR, Chung, HSH
core