Results 201 to 210 of about 1,219 (265)

A 40.68‐MHz Active Rectifier Using PLL and PWM Control of DC‐DC Converter for ON/OFF Delay Compensation

International Journal of Circuit Theory and Applications, EarlyView.
A ramp‐based phase‐locked loop (RPLL) active rectifier operating at 40.68 MHz compensates switching delay variations to improve phase alignment. The proposed architecture achieves 90.3% peak power conversion efficiency and 98.0% voltage conversion ratio for high‐frequency wireless power transfer in implantable medical devices.
Woorim Lee, Sungmin Shin, Seongbin Kwon, Geonwoo Baek, Jongyeop Kim, Franklin Bien   +5 more
wiley   +1 more source

Distributed wireless power transfer based on secondary-side-direct-series topology for integration with building-attached photovoltaic system. [PDF]

Sci Rep
Zhang Z, Chen H, Weng W, Chen Y, Wu J, He X.   +5 more
europepmc   +1 more source

Simplified Small‐Signal Modeling Method for Non‐Isolated High Step‐Up Converters

International Journal of Circuit Theory and Applications, EarlyView.
A generalized small‐signal modeling methodology for a family of non‐isolated high step‐up DC‐DC converters is proposed. ABSTRACT This work presents a generalized small‐signal modeling methodology for a family of DC–DC converters based on the four‐state switching cell with a wide conversion range (WCR‐4SSC) operating in continuous conduction mode (CCM).
Samuel Antonio Macedo de Oliveira, Pedro Herysson Almeida da Silva, Fernando Lessa Tofoli, Dalton de Araújo Honório   +3 more
wiley   +1 more source

Applicability Analysis of High-Voltage Transmission and Substation Equipment Based on Silicon Carbide Devices. [PDF]

Micromachines (Basel)
Zhang H, Nie M, Dong Q, Liu H, Jia P, Li Z, Fang Y.   +6 more
europepmc   +1 more source

Recovery and Repurposing of End‐of‐Life Graphitic Anodes for Green Lithium‐Ion Batteries

EcoEnergy, EarlyView.
This review summarizes the degradation mechanisms of spent graphite anodes in lithium‐ion batteries and highlights key recycling, regeneration, and modification strategies, including hydrometallurgical and pyrometallurgical approaches. It also discusses recent advances in surface engineering, structural regulation, and material hybridization, offering ...
Wei Wei, Weiguo Liu, Jiangqi Zhou
wiley   +1 more source

Maximizing wireless power transfer efficiency at exceptional points. [PDF]

Commun Eng
Hu WK, Zhang B, Hu Y, Li H, Han W.
europepmc   +1 more source

Multidimensional Engineering Enabling Rate‐Matched C−N Coupling for Efficient Organonitrogen Electrosynthesis

EcoEnergy, EarlyView.
This review introduces rate matching as a unifying design principle for efficient electrochemical C−N coupling and highlights multidimensional engineering of catalysts, interfaces, and reactors to synchronize the generation of carbon‐ and nitrogen‐containing intermediates, balance their surface coverages, maximize C−N bond formation, and enable ...
Kaixing Cai, Chunyang Pu, Jun Yang, Guangqin Li, Jiahui Xian   +4 more
wiley   +1 more source

Vortex Ratchet Effect in a NbC Strip With a Periodic Edge Indentation. [PDF]

Small Methods
Porrati F, Pokusinskyi AO, Barth S, Huth M, Dobrovolskiy OV.   +4 more
europepmc   +1 more source

Elementary Steps of Energy Conversion in Strongly Correlated Systems: Beyond Single Quasiparticles and Rigid Bands

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This article reviews the fundamental consequences of strong correlations on excitations and elementary steps of energy conversion leading to new opportunities to control energy conversion. Examples include friction at surfaces, thermal transport, and photovoltaic energy conversion.
Vasily Moshnyaga, Peter E. Blöchl, Vitaly Bruchmann‐Bamberg, Annika Dehning, Lukas Allen‐Rump, Christopher Hausmann, Matthias Krüger, Amrith Rathnakaran, Sangeeta Rajpurohit, Daniel Steil, Christoph Flathmann, Jörg Hoffmann, Michael Seibt, Cynthia Volkert, Christian Jooss   +14 more
wiley   +1 more source

Single-phase to three-phase DC-link boost converter with reduced controlled switch count. [PDF]

Sci Rep
Nagi HA, El-Sabbe AE, Osheba DSM.
europepmc   +1 more source