A Single-Inductor Multiple-Output Buck/Boost DC–DC Converter With Duty-Cycle and Control-Current Predictor

Abstract Photovoltaic cell is a key part of solar power generation system, and whether its photoelectric conversion is sufficient is also called the maximum power point tracking problem, that is, photovoltaic cell MPPT. Different from the traditional MPPT control algorithm, this paper models and analyzes the output characteristics of solar cell. on this basis, proposes a fuzzy control algorithm based on duty cycle disturbance, and simulates it with MATLAB. The result shows the algorithm can well take into account the tracking speed and control accuracy when the external environment change.

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LexOPS: An R package and user interface for the controlled generation of word stimuli

Behavior Research Methods ◽

10.3758/s13428-020-01389-1 ◽

2020 ◽

Vol 52 (6) ◽

pp. 2372-2382

Author(s):

Jack E. Taylor ◽

Alistair Beith ◽

Sara C. Sereno

Keyword(s):

User Interface ◽

Factorial Design ◽

Graphical User Interface ◽

R Package ◽

Psycholinguistic Research ◽

Link Type ◽

Control Current ◽

Word Lists ◽

And Control ◽

Manipulation And Control

AbstractLexOPS is an R package and user interface designed to facilitate the generation of word stimuli for use in research. Notably, the tool permits the generation of suitably controlled word lists for any user-specified factorial design and can be adapted for use with any language. It features an intuitive graphical user interface, including the visualization of both the distributions within and relationships among variables of interest. An inbuilt database of English words is also provided, including a range of lexical variables commonly used in psycholinguistic research. This article introduces LexOPS, outlining the features of the package and detailing the sources of the inbuilt dataset. We also report a validation analysis, showing that, in comparison to stimuli of existing studies, stimuli optimized with LexOPS generally demonstrate greater constraint and consistency in variable manipulation and control. Current instructions for installing and using LexOPS are available at https://JackEdTaylor.github.io/LexOPSdocs/.

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Operation, Control and Verification of Seven-Level Quasi-Z-Source-Based T-Type Inverter

Journal of Circuits System and Computers ◽

10.1142/s0218126620500231 ◽

2019 ◽

Vol 29 (02) ◽

pp. 2050023

Author(s):

Ramesh Rahul Jammy ◽

Kirubakaran Annamalai ◽

Chinmay Kumar Das

Keyword(s):

Duty Cycle ◽

Output Voltage ◽

Pulse Width Modulation ◽

Voltage Level ◽

Text Type ◽

Control Schemes ◽

Operation Control ◽

Bidirectional Switches ◽

And Control

In this paper, a novel seven-level Quasi-Z-Source-based [Formula: see text]-type inverter (7L[Formula: see text]qZST[Formula: see text]) is proposed. The proposed inverter is an upgrade of Quasi-Z-source (qZs) network and seven-level [Formula: see text]-type inverter. The 7L qZST[Formula: see text] comprises of three qZs-based impedance networks, two bidirectional switches and an [Formula: see text]-bridge inverter. It owns the advantages of reduced switch count, improved output voltage gain, enhanced reliability and better quality of output voltage and current. The performance of the proposed topology is tested for two different pulse width modulation techniques based on shoot-through control. The first technique offers simple control and operated at a fixed shoot-through duty cycle for realizing output voltage level. The second technique facilitates independent control of each qZs network dc-link voltage and they can be operated at different shoot through duty cycle which overcomes the limitation of first technique with better quality in output voltage. The detailed operation of the proposed topology and control schemes have been elaborated for different switching states for each output voltage level generation. Extensive simulation and experimentation are performed for both the switching schemes to verify their performance under steady state and dynamic conditions. Furthermore, a brief comparison is constructed to highlight the merits of the proposed inverter with conventional topologies.

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Nonlinear and hybrid modeling, simulation, and control: current technology and future views at pavilion technologies

Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148) ◽

10.1109/acc.2001.945975 ◽

2001 ◽

Author(s):

B. Sayyar-Rodsari

Keyword(s):

Hybrid Modeling ◽

Current Technology ◽

Modeling Simulation ◽

Control Current ◽

Simulation And Control ◽

And Control

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First operation of the SASE1 undulator system of the European X-ray Free-Electron Laser

Journal of Synchrotron Radiation ◽

10.1107/s1600577518017125 ◽

2019 ◽

Vol 26 (2) ◽

pp. 302-310 ◽

Cited By ~ 5

Author(s):

S. Abeghyan ◽

M. Bagha-Shanjani ◽

G. Chen ◽

U. Englisch ◽

S. Karabekyan ◽

...

Keyword(s):

Duty Cycle ◽

Free Electron ◽

Free Electron Laser ◽

Radiation Dosimetry ◽

Phase Shifters ◽

X Ray ◽

High Duty Cycle ◽

Dosimetry System ◽

And Control

The European XFEL comprises three undulator systems. All of the systems use standardized mechanical, magnetic and control components. The key elements such as undulators, phase shifters and quadrupole movers as well as their controls are described, with special emphasis on the SASE1 undulator system, which was the first to become operational and has been lasing since May 2017. The role of these systems for the commissioning is outlined with special emphasis on beam-based alignment, which was important to achieve first lasing. Radiation damage was observed. The exposure doses were measured with the online radiation dosimetry system. Countermeasures and latest results are reported, which are important for a high-duty-cycle machine such as the European XFEL.

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