Results 61 to 70 of about 17,177,900 (326)

A nearest level PWM method for the MMC in DC distribution grids [PDF]

, 2018
For modular multilevel converters (MMCs) applied to medium-voltage DC distribution grids, using the traditional Nearest Level Modulation (NLM) as in HVDC systems can lead to severe current distortion due to significantly reduced module number. This paper
Ding, Ruoyu, Fu, Chao, Hu, Can, Wang, Yi, Xu, Lie, Yang, Erlin   +5 more
core   +1 more source

Critical Role of Polymer Gate Dielectrics on the Charge Carrier Transport in Perovskite Field‐Effect Transistors

Advanced Functional Materials, EarlyView.
Charge transport in 2D tin perovskite FETs is shown to be governed by dielectric interface behavior. Polar polymer dielectrics induce dipolar disorder that localizes carriers, whereas nonpolar polymers suppress trapping and enable superior charge transport, ensuring stable and reliable transistor operation. ABSTRACT Understanding the role of interfaces
Chongyao Li, Zhitian Ling, Pawel Czulkin, Paul W. M. Blom, Wojciech Pisula, Tomasz Marszalek   +5 more
wiley   +1 more source

Comparison of Hysteresis Based PWM Schemes ΔΣ-PWM and Direct Torque Control

Applied Sciences, 2021
This paper presents the differences and similarities of ΔΣ-PWM as a hysteresis-based PWM scheme with direct torque control (DTC) using simulation models.
Kevin Klarmann, Malte Thielmann, Walter Schumacher   +2 more
doaj   +1 more source

Ion‐Reconfigurable “N”‐Shaped Antiambipolar Behavior in Organic Electrochemical Transistors

Advanced Materials, EarlyView.
A unique N‐shaped negative differential transconductance (NDT) characteristics is demonstrated in single‐polymer organic electrochemical transistors through a sequential doping–redox–doping process driven by iodide ions. This redox‐driven mechanism enables low‐voltage, ion‐controlled reconfigurability and tunable current modulation, allowing seamless ...
Debdatta Panigrahi, Daniele Zucchelli, Zeinab Hamid, Christina Kousseff, Arup Sarkar, Aristea Pavlou, Zhitian Ling, Somayeh Kashani, Iain McCulloch, Paul W. M. Blom, Fabrizio Torricelli, Paschalis Gkoupidenis   +11 more
wiley   +1 more source

A simple maximum power point tracking based control strategy applied to a variable speed squirrel cage induction generator [PDF]

, 2012
This paper presents a comprehensive modelling and control study of a variable speed wind energy conversion system based on a squirrel-cage induction generator (SCIG).
Allali, A., Denai, Mouloud, Draou, A., Merabet Boulouiha, H., Tahri, A.   +4 more
core   +1 more source

Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

A Soft-Switching Control for Cascaded Buck-Boost Converters Without Zero-Crossing Detection

IEEE Access, 2019
This paper proposes a novel soft-switching control without zero-crossing detection for the cascaded buck-boost converters (CBBCs). The proposed soft-switching control consists of two parts: soft-switching modulation and closed-loop control.
Jingrong Yu, Maoyun Liu, Dongran Song, Jian Yang, Mei Su   +4 more
doaj   +1 more source

Quantitative principles of cis-translational control by general mRNA sequence features in eukaryotes. [PDF]

, 2019
BackgroundGeneral translational cis-elements are present in the mRNAs of all genes and affect the recruitment, assembly, and progress of preinitiation complexes and the ribosome under many physiological states.
A Battle, A Dana, A Kozomara, A Radhakrishnan, A Reyes, AG Hinnebusch, AG Hinnebusch, AO Subtelny, AV Pisarev, CDS Duncan, CJ Shoemaker, CL Simms, D Fell, D Ray, D Weinberg, DH Mathews, DR Cavener, DR Groebe, EM Novoa, F Sinturel, GL Chew, Guo-Liang Chew, GW Li, H Firczuk, H Gingold, H Gingold, H Guo, H Kacser, J Sponer, JD Blair, Jingyi Jessica Li, JJ Li, JJ Li, JJ Li, JT Cuperus, KA Cottrell, LD Fernades, M dos Reis, M Gonzalez-Porta, M Kozak, M Lynch, Mark Douglas Biggin, Mary K. Thompson, MF Princiotta, MF Rojas-Duran, MJ Liu, MW Jones-Rhoades, ND Sen, P Janich, P Shah, PN Borer, PY Hsu, R Lorenz, R Tunney, R Zhang, S Dvir, S Nakagawa, SA Lima, SJ Marygold, T Ben-Yehezkel, T Tuller, T Tuller, T von der Haar, T Xia, TG Johnstone, V Castelo-Szekely, V Presnyak, WL Noderer, Y Seol, Y Zarai, YV Svitkin, Z Bloom-Ackermann   +71 more
core   +3 more sources

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Fabric‐Based Wearable Robotic Exoskeleton Gloves: Advancements and Challenges

Advanced Materials Technologies, EarlyView.
This review highlights interdisciplinary technological advances in fabric‐based robotic gloves, focusing on progress in design, fabrication, actuation, sensing, control, and power and energy requirements. It also addresses performance testing and validation, including biomechanical, strength, functional, user experience, and durability assessments, to ...
Ayse Feyza Yilmaz, Gökhan Ince, Ozgur Atalay   +2 more
wiley   +1 more source