Results 111 to 120 of about 31,150 (250)

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  

A filter synthesis technique applied to the design of multistage broad-band microwave amplifiers [PDF]

, 2002
A method for designing multistage broad-band amplifiers based upon well-known filter synthesis techniques is presented. Common all-pole low-pass approximations are used to synthesize prototype amplifier circuits that may be scaled in frequency and ...
Hunter, I., Parry, R., Pollard, R.D., Rooney, J.P.   +3 more
core   +1 more source

A green solvent processable, self‐doped N‐annulated perylene butyl tetraester applied as a solar cell cathode interlayer

Polymer International, EarlyView.
A new organic molecular cathode interlayer is presented built upon the perylene butyl tetraester scaffold. The new molecule incorporates N‐annulation and a functional amine group to control optical, electrochemical and physical properties and delivers excellent solar cell performance. Abstract We report a new amino‐bay‐substituted, N‐annulated perylene
Kathryn M Wolfe, Shahidul Alam, Zachary T Gardner, Biswajit Pal, Alexander Harrison, Frédéric Laquai, Chad Risko, Gregory C Welch   +7 more
wiley   +1 more source

A Self‐Supervised Machine Learning Approach for the Estimation of Open‐Circuit Voltage Degradation in Photovoltaic Systems

Progress in Photovoltaics: Research and Applications, EarlyView.
This study introduces a self‐supervised machine learning approach integrating physics‐based principles to estimate open‐circuit voltage (voc$$ {v}_{oc} $$) degradation in photovoltaic systems using SCADA data. By combining clustering and regression algorithms, our method detects performance deviations without labelled datasets.
Sandra Riaño, Jose‐Domingo Santos, Miguel Esteras, Amaia Abanda, Javier Del Ser   +4 more
wiley   +1 more source

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

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

Hysteresis Control for Shunt Active Power Filter under Unbalanced Three-Phase Load Conditions

Journal of Electrical and Computer Engineering, 2015
This paper focuses on a four-wire shunt active power filter (APF) control scheme proposed to improve the performance of the APF. This filter is used to compensate harmonic distortion in three-phase four-wire systems.
Z. Chelli, R. Toufouti, A. Omeiri, S. Saad   +3 more
doaj   +1 more source

Active Power Filtering Using the ZDPC Method under Unbalanced and Distorted Grid Voltage Conditions

Energies, 2015
In this paper, we propose a new Zero Direct Power Control (ZDPC) technique for active compensation of harmonics and reactive power, using shunt active power filter (SAPF), based on cancellation of instantaneous active and reactive power disturbances by ...
Kamel Djazia, Fateh Krim, Abdelmadjid Chaoui, Mustapha Sarra   +3 more
doaj   +1 more source

Design of Single-Phase Active Power Filter for Harmonic Mitigation in Distribution Power Line [PDF]

, 2002
Recently, the wide use of power electronic components in various application s has affected the quality of the power. One of the most serious problems is that of the harmonic, which is generated from the nonlinear loads such as variable frequency AC ...
Dahidah, Mohamed S. A.
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