Results 51 to 60 of about 5,942,025 (304)

Advanced AC-AC, AC-DC and DC-DC power electronics converters for smart grid [PDF]

Converters and controllers of power electronics are the lifeblood of many emerging technologies in manufacturing, information technology and more. This thesis investigates the design, analysis, and implementation of advanced AC-AC, AC-DC and DC-DC power ...
Younis, Hafiz Muhammad Fahim
core   +1 more source

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

Advanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain, Xian'e Li, Mats Fahlman, Olle Inganäs, Koen Vandewal, Feng Gao   +5 more
wiley   +1 more source

Design of an inductor-less step-up ac/dc converter for 0.3 V@1 MHz vibration energy harvesting

Energy Reports, 2020
For vibration energy harvesting, we propose an inductor-less step-up ac/dc converter in this paper. To realize the inductor-less design, the proposed ac/dc converter consists of two converter blocks: Cockcroft–Walton circuit and charge pump.
Kei Eguchi, Akira Shibata, Kyoka Kuwahara, Takaaki Ishibashi   +3 more
doaj   +1 more source

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

Advanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis, Filip Aniés, Yiyang Yu, Mohammed Ghadiyali, Hendrik Faber, Zhanibek Bizak, Youssef Kabri, Pavlos Tzourmpakis, Suman Mandal, Linqu Luo, Temur Maksudov, Mohamad Insan Nugraha, Harold F. Mazo‐Mantilla, Patrice Vanelle, Julie Broggi, Khaled N. Salama, Udo Schwingenschlögl, Martin Heeney, Atif Shamim, Thomas D. Anthopoulos   +19 more
wiley   +1 more source

Development of DC/AC power converters for applications requiring high efficiency. [PDF]

, 2016
Silicon-based power devices have dominated power electronics applications over the last decades. Research and development in microelectronics have pushed the performance of power devices to face some fundamental limitations of silicon material. Wide band-gap semiconductors, such as silicon carbide, offer a solution to the pressing energy efficiency ...
openaire   +1 more source

Control of Power Electronic Converters and Systems: Volume 4

, 2018
Impedance-source networks have gained attention as promising power conversion stages owing to their flexible step-up/down conversion ratios and high reliability with shoot-through protection. However, there are still limitations that hinder their further
Siwakoti, YP, Yuan, J, Liu, P, Blaabjerg, F, Blaabjerg, Frede; id_orcid   +4 more
core   +1 more source

Generating Unconventional Spin‐Orbit Torques With Patterned Phase Gradients in Tungsten Thin Films

Advanced Materials, EarlyView.
ABSTRACT A key aim in spintronics is to achieve current‐induced magnetization switching via spin‐orbit torques without external magnetic fields. For this, the focus of recent work has been on introducing controlled lateral gradients across ferromagnet/heavy‐metal devices, giving variations in thickness, composition, or interface quality.
Lauren J. Riddiford, Anne Flechsig, Shilei Ding, Emir Karadža, Niklas Kercher, Tobias Goldenberger, Elisabeth Müller, Pietro Gambardella, Laura J. Heyderman, Aleš Hrabec   +9 more
wiley   +1 more source

Behavior of Residual Current Devices at Earth Fault Currents with DC Component

Sensors, 2022
Low-voltage electrical installations are increasingly saturated with power electronic converters. Due to very high popularity of photovoltaic (PV) installations and the spread of electric vehicles (EV) as well as their charging installations, DC–AC and ...
Stanislaw Czapp, Hanan Tariq, Slawomir Cieslik   +2 more
doaj   +1 more source

Modeling and control of single-phase AC/DC converters

, 2018
Power electronic converters as the intermediate stage connect various loads to power sources. In many cases, the power source is directly from the utility grid, which is an AC sinusoidal voltage.
Keliang Zhou, Zhou, Keliang, Yang, Yongheng; id_orcid, Yongheng Yang, Yang, Yongheng   +4 more
core   +1 more source

Giant Orbital Rashba–Edelstein Effect in Crystalline Cu2O/Cu Heterostructures

Advanced Materials, EarlyView.
An enhanced orbital Rashba–Edelstein effect is demonstrated in a crystalline Cu2O/Cu heterostructure, compared to naturally oxidized CuOx structures, highlighting the critical role of crystallinity and interface control in orbital torque generation. The resulting spin torque conductivity exceeds that of Pt, indicating the potential of orbital torque ...
San Ko, Jaimin Kang, Su Jae Kim, Hanhwi Jang, Do‐Kyeong Nam, Minseok Kang, Sunghoon Kim, Yeon Sik Jung, Se‐Young Jeong, Kab‐Jin Kim, Byong‐Guk Park   +10 more
wiley   +1 more source