Results 81 to 90 of about 23,291 (287)

Multilevel Converters: An Enabling Technology for High-Power Applications [PDF]

, 2009
| Multilevel converters are considered today as the state-of-the-art power-conversion systems for high-power and power-quality demanding applications.
García Franquelo, Leopoldo, Kouro, Samir, León Galván, José Ignacio, Martín Prats, María de los Ángeles, Portillo Guisado, Ramón Carlos, Pérez, Marcelo, Rodríguez, José   +6 more
core  

Upcycling of Disposable Face Masks into Water‐Resistant and Flame Retardant Foams

Advanced Functional Materials, EarlyView.
Disposable mask waste is upcycled into lightweight polypropylene‐based foams with tunable porosity and composite architectures reinforced by ear‐loop fibers. The sustainable solvent‐based process enables upcycling rates of 91% and solvent recovery of >90%.
Jingjing Pan, Erlantz Lizundia, Hao Jia, Lennart Bergström   +3 more
wiley   +1 more source

Implementing selective harmonic elimination in multilevel inverters with optimal dc source

e-Prime: Advances in Electrical Engineering, Electronics and Energy
In this paper, the bird swarm algorithm (BSA) is proposed for selective harmonic elimination (SHE) implementation in seven-level inverters. The SHE technique reduces switching frequency and, as a result, inverter losses, by using BSA to expedite the ...
Piyush L. Kamani, Rajendra K. Patel, Mansukh K. Kathiria, Devang P. Majithiya, Jay H. Brahmkhatri   +4 more
doaj   +1 more source

FPGA Based Selective Harmonic Elimination Technique for Multilevel Inverter

International Journal of Power Electronics and Drive Systems (IJPEDS), 2018
Harmonic elimination at the fundamental frequency is very much appropriate for high and medium range of power generation and applications. This paper considers a new technique for selective harmonic elimination (SHE), in which the total harmonic distortion (THD) is minimized when compared with that of the conventional one.
T. Porselvi, K. Deepa, R. Muthu
openaire   +1 more source

Tin‐Oxo Nanocluster Extreme UV Photoresists Equipped with Chemical Features for Atmospheric Stability and High EUV Sensitivity

Advanced Functional Materials, EarlyView.
Fluoroalkyl‐functionalized tin–oxo nanoclusters (N‐TOC6) enable robust pattern formation through ligand crosslinking under EUV exposure without thermal processing. Sn–F coordination mitigates the Lewis acidity of Sn centers, suppressing reactions with airborne molecules and improving post‐exposure pattern stability.
Yejin Ku, Gayoung Kim, Minseung Kim, Hyungju Ahn, Jin‐Kyun Lee, Jiho Kim, Byeong‐Gyu Park, Dohyun Moon, Sangsul Lee, Seohyeon Lee, Yu Ha Jang, Byung Jun Jung, Hyunseok Kim, Changhyeon Lee, Su‐Mi Hur, Ji Young Park, Chawon Koh, Tsunehiro Nishi, Hyun‐Woo Kim   +18 more
wiley   +1 more source

Quantum Plasmonics with multi-emitters: Application to adiabatic control

, 2017
We construct mode-selective effective models describing the interaction of N quantum emitters (QEs) with the localised surface plasmon polaritons (LSPs) supported by a spherical metal nanoparticle (MNP) in an arbitrary geometric arrangement of the QEs ...
Castellini, A., Colas-des-Francs, G., Dzsotjan, D., Guérin, S., Jauslin, H. R., Messina, A., Rousseaux, B.   +6 more
core   +1 more source

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

A Universal Formulation for Multilevel Selective Harmonic Elimination - PWM with Half-Wave Symmetry [PDF]

, 2018
Selective harmonic elimination - pulse width modulation (SHE-PWM) can be utilized to improve the efficiency of multilevel voltage source converters due to its ability to provide low switching frequency and tight control of low-order harmonics.
Ceballos, Salvador, Konstantinou, Georgios, Kortabarria, Inigo, Martinez de Alegria, Inigo, Perez-Basante, Angel, Pou, Josep   +5 more
core   +2 more sources

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Fundamental Frequency Switching Strategies of a Seven-Level Hybrid Cascaded H-Bridge Multilevel Inverter [PDF]

, 2009
This paper presents a cascaded H-bridge multilevel inverter that can be implemented using only a single dc power source and capacitors. Standard cascaded multilevel inverters require n dc sources for 2n + 1 levels.
Chiasson, John N., Du, Zhong, Ozpineci, Burak, Tolbert, Leon M.   +3 more
core   +2 more sources