Results 111 to 120 of about 2,729,902 (345)

Research on a novel STATCOM based on hybrid cascaded multi-level converter and its coordination control strategy

The Journal of Engineering, 2019
A novel static synchronous compensator (STATCOM) based on hybrid cascaded multi-level converter (HCMC) is presented in this study, i.e HCMC-STATCOM, which combines the advantages of the traditional two-level converter and cascaded H-bridge converter ...
Yi Du, Pengfei Hu, Junpeng Deng, Hongyang Lin, Meng Li   +4 more
doaj   +1 more source

Improving the Power Electronics Laboratory teaching/learning process: an interactive web tool [PDF]

, 2017
European Higher Education Area; Power Electronics Laboratory; educational methods Resumen: The forthcoming European Higher Education Area implies an important change in the teaching/learning process: it is necessary to get students more involved as well
Blazquez-Parra, Elidia Beatriz, Sotorrio-Ruiz, Pedro Juan, Trujillo-Aguilera, Davinia   +2 more
core  

Crack‐Growing Interlayer Design for Deep Crack Propagation and Ultrahigh Sensitivity Strain Sensing

Advanced Functional Materials, EarlyView.
A crack‐growing semi‐cured polyimide interlayer enabling deep cracks for ultrahigh sensitivity in low‐strain regimes is presented. The sensor achieves a gauge factor of 100 000 at 2% strain and detects subtle deformations such as nasal breathing, highlighting potential for minimally obstructive biomedical and micromechanical sensing applications ...
Minho Kim, Taewi Kim, Jieun Park, Insic Hong, Myungrae Hong, Seonggyeong Park, Beomjin Kim, Sehyuk Ahn, Siwoo Jang, Seungyong Han, Je‐Sung Koh, Daeshik Kang   +11 more
wiley   +1 more source

Detailed Analysis of a Regenerative Active Clamping Snubber for a Phase-Shifted Converter

IEEE Access
The phase-shifted converter (PSFB) is one of the most used converters for applications where high power and galvanic isolation are required. To achieve zero voltage switching (ZVS) on the primary side these converters use the leakage inductance of the ...
Dorin Petreus, Toma Patarau
doaj   +1 more source

System for the measurement of ultra-low stray light levels [PDF]

, 1978
An apparatus is described for measuring the effectiveness of stray light suppression light shields and baffle arrangements used in optical space experiments and large space telescopes.
Brealt, R. P., Fannin, B. B., Griner, D. B., Hawkins, C. A., Hunt, G. H., Hurd, W. A., Shelton, G. B., Wyman, C. L.   +7 more
core   +1 more source

Tracking the Dynamic and Interactive Metal Oxidation Changes in CoFe, CoNi, and NiFe Bimetallic Hydroxides for Electrocatalytic Oxygen Evolution

Advanced Functional Materials, EarlyView.
Operando hard X‐ray absorption spectroscopy is applied to track the dynamic and interactive metal oxidation changes in iron group bimetallic hydroxides under different chemical and electrochemical conditions. It shows that Co and Fe oxidation are relatively equal and synchronized in CoFeOxHy.
Jinzhen Huang, Adam H. Clark, Juliana Bruneli Falqueto, Erica D. Clinton, Kenneth Crossley, Thomas J. Schmidt, Emiliana Fabbri   +6 more
wiley   +1 more source

Two Types of Asymmetric Switched-Capacitor Five-Level Single-Phase DC-AC Inverters for Renewable Energy Applications

Energies
Two types of asymmetric switched-capacitor five-level single-phase DC-AC inverters are presented based on the clamping half-bridge circuit and the output half-bridge circuit.
Jenn-Jong Shieh, Kuo-Ing Hwu, Sheng-Ju Chen   +2 more
doaj   +1 more source

Multi‐Ion Doping Controlled CEI Formation in Structurally‐Stable High‐Energy Monoclinic‐Phase NASICON Cathodes for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
The graphical abstract illustrates the synthesis pathway, morphological feature, and thermodynamic feasibility of entropy‐engineered NASICON cathodes for sodium‐ion batteries. Abstract Overcoming the energy density limitations of sodium‐ion batteries (NIBs) requires innovative strategies to optimize cathode materials.
Sharad Dnyanu Pinjari, Vignesh Mahalingam, Purandas Mudavath, Malavika Aarayil, Tasdique Arman, Ipsita Pal, Dipan Kundu, Raghavan Ranganathan, Ashok Kumar Nanjundan, Rohit Ranganathan Gaddam   +9 more
wiley   +1 more source

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

Static inverters which sum a plurality of waves Patent [PDF]

, 1970
Describing static inverter with single or multiple phase ...
Anderson, D. L., Gould, J. M., Willis, A. E., Winkler, C. E.   +3 more
core   +1 more source