Results 61 to 70 of about 31,344 (251)

Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space

Advanced Materials, EarlyView.
In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz, Lukas E. Lehner, Stepan Demchyshyn, Bekele Hailegnaw, Phillip Jahelka, Magdalena Breitwieser, Sercan Özen, Andrea Denker, Jürgen Bundesmann, Alina Hanna Dittwald, Dilara Karabulut, Philipp Tockhorn, Steve Albrecht, Felix Lang, Markus C. Scharber, Michael D. Kelzenberg, Harry A. Atwater, Martin Kaltenbrunner   +17 more
wiley   +1 more source

Active power filter with enhanced echo state network in radar power supply system

IET Power Electronics, 2023
There have been concerns raised on load non‐linearity as more and more load types are being introduced into the radar power supply system. The non‐linear load produces harmonic current while it seriously threatens the normal and safe operation ...
Zongguo Tao, Yuetong Wang, Chenyu Sun, Ruilin Wang, Zhiwei Chen, Yingying Zhang   +5 more
doaj   +1 more source

Development of Control Techniques Using Modified Fuzzy Based SAPF for Power Quality Enhancement

IEEE Access, 2021
Low power distribution systems have severe power quality issues due to the non-linearity of several residential and industrial loads. The main power quality issue is the harmonics leading to the overheating of the transformers in the distribution systems.
T. M. Thamizh Thentral, K. Vijayakumar, S. Usha, R. Palanisamy, Thanikanti Sudhakar Babu, Hassan Haes Alhelou, Amer Al-Hinai   +6 more
doaj   +1 more source

Harmonic current extraction of shunt active power filter based on prediction current technique - Hysteresis PWM [PDF]

, 2013
Due to the wide spread of power electronics equipment in modern electrical systems, the increase of the harmonics disturbance in the ac mains currents has became a major concern due to the adverse effects on all analysis and simulation using MATLAB ...
Abou Elzahab, EE, Mamdouh, MM, Mansour, AM, Nashed, MNF, Zobaa, AF   +4 more
core  

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

Advanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti, Sergio Martínez‐Saiz, Morena Cervino, Edoardo Stanzani, Sandra Jenatsch, Qingsen Zeng, Joo Sung Kim, Dong‐Hyeok Kim, Eojin Yoon, Tae‐Woo Lee, Daniel Tordera, Henk J. Bolink   +11 more
wiley   +1 more source

Printed Organic Thermoelectric Generators: Progress and Challenges Towards Efficient Energy Harvesting

Advanced Materials Technologies, EarlyView.
Printed organic thermoelectric generators (OTEGs) enable flexible and sustainable energy harvesting from low‐grade heat. This Perspective critically assesses recent advances in printable thermoelectric materials, 2D and 3D device architectures, and current performance limits of printed OTEGs.
Vijitha Ignatious, Pietro Rossi, Matteo Massetti, Cecilia Mattevi, Francisco Molina‐Lopez, Mario Caironi   +5 more
wiley   +1 more source

Experimental and simulation results of a current-source three-phase shunt active power filter using periodic-sampling [PDF]

, 2012
In this paper are presented experimental and simulation results of a Current-Source Three-Phase Shunt Active Power Filter, during its operation to compensate the currents a low power factor load and a nonlinear load.
Afonso, João L., Exposto, Bruno Fernandes, Gonçalves, Henrique, Pedrosa, Delfim Duarte Rolo, Pinto, J. G.   +4 more
core  

Power Flow in a Load-Current Sensorless Shunt Active Power Filter [PDF]

, 2007
In this paper, power flow analysis of a three-phase four-wire system with a shunt active power filter in steady state is presented. The analysis begins with a mathematical model of the power inverter and continues to find the relationship of the real and
Tumbelaka, H. H. (Hanny)
core   +3 more sources

A Pressure Microsensor Made of Parylene‐C for Use as Medical Implant

Advanced Materials Technologies, EarlyView.
A monolithic parylene‐C pressure sensor with gold strain gauges provides 6.2 μV$\mu{\rm V}$·mmHg$\cdot{\rm mmHg}$−1$^{-1}$ sensitivity. The morphology of a sputtered thin film strain sensor is granular/columnar, which results in a high gauge factor of 7.5. Thermal bonding and parylene‐C coating create a hermetic cavity.
Ann‐Kathrin Klein, Victor Krajka, Andreas Dietzel   +2 more
wiley   +1 more source

On the Use of the p-q Theory for Harmonic Current Cancellation with Shunt Active Filters [PDF]

, 2019
Discussion and mathematical proof on necessary and sufficient conditions for the application of the {p-q} theory for compensating the harmonic currents consumed by non-linear load using a shunt active filter are presented.
De Angelo, Cristian Hernan, Forchetti, Daniel Gustavo, Giraldo, Oscar Danilo Montoya, Serra, Federico Martin   +3 more
core   +3 more sources