Results 81 to 90 of about 2,123,255 (261)

Fixed- and variable-frequency sliding mode controller–maximum power point tracking converter for two-stage grid-integrated photovoltaic system employing nonlinear loads with power quality improvement features

Measurement + Control, 2019
This article presents a reliable and efficient photovoltaic sliding mode voltage-controlled maximum power point tracking DC-DC converter–active power filter integration system to supply real power to grid.
Ravichandran Chinnappan, Premalatha Logamani, Rengaraj Ramasubbu   +2 more
doaj   +1 more source

A Multi-Producer Group-Search-Optimization Method-Based Maximum-Power-Point-Tracking for Uniform and Partial Shading Condition

IEEE Access, 2020
The power-voltage (P-U) curve of PV array shows multiple power points, which brings challenges to fast and accurately tracking of the global maximum power point.
Lijuan Li, Yongdong Chen, Hongliang Liu, Wenbing Tang, Mengni Liu, Jun Wu, Zeyu Li   +6 more
doaj   +1 more source

Optical phase synchronization in coherent optical beamformers for phased array receive antennas [PDF]

, 2009
An optical phase synchronization system using a power feedback loop technique is experimentally demonstrated. The system allows coherent combining of signals modulated on the same optical carrier in a hybrid optical beam forming system ...
Burla, M., Etten, W. van, Garcia-Garcia, A., Khan, M.R.H., Marpaung, D.A.I., Meijerink, A., Roeloffzen, C.G.H., Zhuang, L.   +7 more
core   +3 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

A combined reinforcement learning and sliding mode control scheme for grid integration of a PV system

CSEE Journal of Power and Energy Systems, 2019
The paper presents development of a reinforcement learning (RL) and sliding mode control (SMC) algorithm for a 3-phase PV system integrated to a grid.
Aurobinda Bag, Bidyadhar Subudhi, Pravat Kumar Ray   +2 more
doaj   +1 more source

A First Look at the X-ray Population of the Young Massive Cluster VVV CL077

, 2015
Multi-wavelength analysis of the young massive cluster VVV CL077 is presented for the first time. Our Chandra survey of this region enabled the detection of three X-ray emitting stellar members of the cluster, as well as a possible diffuse X-ray ...
Bauer, Franz E., Bodaghee, Arash, Fornasini, Francesca, Rahoui, Farid, Tomsick, John A.   +4 more
core   +1 more source

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source

Rancang Bangun Trainer Kit Simulator Identifikasi Karakteristik Solar Cell Sebagai Media Pembelajaran

Rekayasa
Solar panels consist of photovoltaic cells which are identical to diode semiconductor devices. Photovoltaics have a special point which is usually called MPP (Maximum Power Point).
Ii Munadhif, Kharisma Nizar Maulana, Mohammad Abu Jamiin   +2 more
doaj   +1 more source

Maximum Power Point Tracking Controller for Photovoltaic Systems Based on the Weighted Mean of Vectors Algorithm Optimization Algorithm under Partial Shading Conditions and Temperature Changes [PDF]

Journal of Renewable Energy and Environment
Under partial shading conditions (PSCs), photovoltaic (PV) systems exhibit non-uniform P-V characteristic curves with multiple local maximum power points (LMPP).
Morteza Abdolhosseini, Rohollah Abdollahi   +1 more
doaj   +1 more source

Application of pattern search method to power system valve-point economic load dispatch

, 2007
Direct search (DS) methods are evolutionary algorithms used to solve constrained optimization problems. DS methods do not require any information about the gradient of the objective function at hand, while searching for an optimum solution.
AL-Othman, A.K., Al-Sumait, J.S., Sykulski, J.K.   +2 more
core   +1 more source