Results 111 to 120 of about 109,088 (302)

Уточнение математической модели m-пульсных регулируемых выпрямителей со смешаной RLC- нагрузкой в цепи постоянного тока [PDF]

, 2013
Аналитическим методом получены точные расчетные формулы коэффициентов гармонических составляющих тока и коэффициенты несинусоидальности тока, связывающие выход и вход произвольного m-пульсного регулируемого вентильного преобразователя и представляющие
Каршенов, Дмитрий Петрович
core  

Advanced Separators for Liquid and Quasi‐Solid Lithium Rechargeable Batteries: Design and Development

Advanced Materials, EarlyView.
This review traces the evolution of lithium‐ion battery separators from passive barriers to multifunctional components central to cell safety and performance. Polymer‐ceramic hybrids, nanofiber architectures, and bio‐derived membranes deliver ionic conductivities above 3 mS cm−1, thermal stability beyond 200 °C, and effective suppression of lithium ...
Karthik Vishweswariah, Ningaraju Gejjiganahalli Ningappa, Anil Kumar M. R., Jeremy I. G. Dawkins, Thiago M. G. Selva, Karim Zaghib   +5 more
wiley   +1 more source

Total Harmonic Distortion Minimization of Multilevel Converters Using Genetic Algorithms

Applied Mathematics, 2013
This paper presents a genetic algorithm (GA) optimization technique to find the optimum switching angles of 11-level inverter with minimum number of dc sources and switches in comparison with the cascade multilevel inverter in order to minimize the total harmonic distortion (THD) of their output voltage waveform.
A. Salami, B. Bayat
openaire   +2 more sources

Harmonic effects on induction and line start permanent magnet machines [PDF]

, 2013
Power Electronics (PE) are implemented in a wide variety of appliances, either to increase its controllability or energy efficiency, or simply because a DC supply is needed.
Debruyne, Colin, Desmet, Jan, Vandevelde, Lieven   +2 more
core   +1 more source

Spin‐Orbit Torque Induced by Switchable Crystal Inversion Symmetry Breaking

Advanced Materials, EarlyView.
An exotic crystal inversion symmetry breaking in SrRuO3/BiFeO3 heterostructure is revealed, and it can be reversibly manipulated by the ferroelectric polarization of BiFeO3. This crystal inversion symmetry breaking can dramatically enhance the spin‐orbit torque efficiency in the SrRuO3 layer by more than 60%, providing an alternative to design an ...
Zhenyi Zheng, Shu Shi, Zhongran Liu, Qihan Zhang, Naafis Ahnaf Shahed, Himanshu Mavani, Guowei Zhou, Qian Chen, Cheng Zhang, Zhanqi Zhou, Tieyang Zhao, Rui Xiao, Lanxin Jia, Liang Liu, Evgeny Y. Tsymbal, Xiaohong Xu, He Tian, Jingsheng Chen   +17 more
wiley   +1 more source

Effect of steady-state pressure distortion on flow characteristics entering a turbofan engine [PDF]

Flow angle, static-pressure, and total-pressure distributions were measured in the passage ahead of a turbofan engine operating with inlet pressure distortion.
Bobula, G. A., Soeder, R. H.
core   +1 more source

Уменьшение динамических потерь в инверторах квазисинусоидального напряжения с помощью регулирования кратности модуляции выходного напряжения [PDF]

, 2015
Проаналізовано джерела втрат в інверторах синусоїдальної напруги. Запропоновано методику зменшення динамічних втрат за допомогою зміни кратності модуляції напруги із забезпеченням необхідного значення коефіцієнту гармонік.
Putilin, M., Verbytskyi, I., Вербицкий, Е. В., Вербицький, Є. В., Путилин, Н. В., Путілін, М. В.   +5 more
core  

Sea Urchin‐Inspired Immuno‐Instructive Ionic Flow Drives MSCs‐Macrophage Communication to Promote Bone Regeneration

Advanced Materials, EarlyView.
ABSTRACT Bone tissue regeneration is a complex physiological process dependent on the spatiotemporal coordination of immune cells and stem cells. Conventional research primarily elucidates the mechanism through which materials facilitate bone formation by initially modulating macrophages and subsequently encouraging the osteogenic differentiation of ...
Yang Lu, Kun Su, Daqian Liu, Chunyu Liu, Muyan Qin, Shuaijie Li, Pengfei Tian, Yansong Wang, Yingbo Wang, Lei Chu, Xu Cui, Haobo Pan   +11 more
wiley   +1 more source

Total Harmonic Distortion Factor Evaluation in Shipboard Electrical Networks

Scientific Bulletin of Naval Academy, 2018
Electric propulsion systems for modern civil and military ships, as well as the growing number of electric consumers on board, are a topical issue in terms of onboard electric power quality. In this respect, a growing number of high power static converters are used, which inevitably leads to the appearance, in the electricity distribution network, of ...
openaire   +1 more source

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