Results 131 to 140 of about 37,830 (274)

Robust Harmonic Elimination Method for Various Load Conditions

Revue des Énergies Renouvelables
The present study implements a Direct Power Control (DPC) strategy to manage a photovoltaic (PV) system functioning as a shunt active power filter (shunt APF), aimed at providing reactive power compensation and mitigating harmonic currents while ...
Zakaria Reguieg, Ismail Bouyakoub, Fayçal Mehedi, Fatiha Bouhadji   +3 more
doaj   +1 more source

Stability of Interconnected DC Converters

, 2015
This paper addresses stability issues of DC networks with constant power loads (CPL). Common DC networks, such as automotive electrical systems and DC microgrids, typically have a step-up/down converter connected in one side to the main bus and, on the ...
Cezar, Gustavo, Rajagopal, Ram, Zhang, Baosen   +2 more
core   +1 more source

Quantifying the Spatial Distribution of Series Resistance in Monolithic Perovskite/Silicon Tandem Solar Cells Using Voltage‐Dependent Photoluminescence Imaging

Small, EarlyView.
Spatially resolved series resistance in monolithic perovskite/silicon tandem solar cells is extracted using voltage‐dependent photoluminescence imaging. The method is robust against current mismatch, shunt resistance, and luminescence coupling. Even in a high‐performance 29% efficiency device, resistive losses contribute up to 1.9% absolute efficiency ...
Oliver Fischer, Anh Dinh Bui, Yan Zhu, Shuai Nie, Tanushree J. B. Nath, Yi Hui Hou, Wei Wang, Khoa Nguyen, Ary Anggara Wibowo, Jann B. Landgraf, Juliane Borchert, Florian Schindler, Heping Shen, Klaus Weber, Hieu T. Nguyen, Stefan W. Glunz, Ziv Hameiri, Daniel Macdonald, Martin C. Schubert   +18 more
wiley   +1 more source

Investigating Spatial‐Temporal Optical Emission Spectroscopy of Unstable Positive Leaders in Long Sparks Under Atmospheric Pressure

High Voltage, EarlyView.
ABSTRACT This study explores exciting state species and reaction pathways in positive leaders to better understand the breakdown mechanisms of long air gap discharges and natural lightning. Emission spectra from an unstable positive leader in a 1 m rod‐plate air gap under switching impulse voltages were observed, spanning 300–800 nm.
Hengxin He, Yubin Huang, Wanxia Zhang, Chang Liu, Xiuyuan Yao, Yu Ying, Weijiang Chen   +6 more
wiley   +1 more source

Экспериментальное исследование алгоритмов управления активным силовым фильтром с компенсацией мгновенной неэффективной мощности [PDF]

, 2013
The report represents the research results of control strategy for a shunt active power filter using a quaternion algebra of the done in ERASIB Corp., which practical usage lets achieve harmonic waveform of three-phase currents consumed from the source ...
Нос, Олег Викторович, Панкратов, Владимир Вячеславович   +1 more
core  

Beam loading

, 2013
We begin by giving a description of the radio-frequency generator-cavity-beam coupled system in terms of basic quantities. Taking beam loading and cavity detuning into account, expressions for the cavity impedance as seen by the generator and as seen by ...
Gamp, Alexander
core   +1 more source

Compact tape‐driven sample delivery system for serial femtosecond crystallography

Journal of Applied Crystallography, EarlyView.
A tape‐driven liquid sample droplet delivery system for serial femtosecond crystallography is described.We have developed a compact tape drive (CoT) with on‐demand sample delivery for time‐resolved serial femtosecond crystallography (SFX) experiments, which can deliver sample droplets and/or initiate reactions with a drop‐on‐drop strategy.
Jungmin Kang, Yoshiaki Shimazu, Fangjia Luo, Ayumi Yamashita, Tomoyuki Tanaka, Yuichi Inubushi, Kensuke Tono, Nipawan Nuemket, Allen M. Orville, So Iwata, Eriko Nango, Makina Yabashi   +11 more
wiley   +1 more source

Fault-tolerant shunt active power filter with synchronous reference frame control and self-tuning filter

Measurement: Sensors
This research proposes a novel method that combines Proportional-Integral (PI) control, Artificial Neural Networks (ANNs), and Synchronous Reference Frame (SRF) theory to improve the performance of a three-phase shunt Active Power Filter (APF) under ...
N. Madhuri, M. Surya Kalavathi
doaj   +1 more source

STREETS AS STAGES: Traffic Enforcement and the Competition for Cultural Growth in China

International Journal of Urban and Regional Research, EarlyView.
ABSTRACT In keeping with China’s desire to build soft power to parallel its economic growth, the policing of city streets has moved to the forefront as a mechanism for moral regulation and improving urban prestige. Under pressure to civilize their citizenry, many Chinese cities have become entrepreneurial cities within a type of cultural growth ...
Gregory Fayard
wiley   +1 more source

Post‐mortem CT detection of fatal air embolism after aerosolized fibrin glue for bladder bleeding

Journal of Forensic Sciences, EarlyView.
Abstract Radiation‐induced hemorrhagic cystitis (RHC) is a severe complication of pelvic radiotherapy, often used to treat various pelvic malignancies. Despite multiple therapeutic options, including conservative and invasive interventions, the optimal management remains uncertain. We report the case of a 76‐year‐old male with pulmonary emphysema and a
Beatrice Benedetti, Nazario Foschi, Caterina Pesaresi, Tommaso Tartaglione, Matteo Mancino, Alberto Chighine, Fabio De‐Giorgio   +6 more
wiley   +1 more source