scholarly journals Simulation Studies Of Photon Signal Reconstruction In The DUNE Single Phase Far Detector With Xe Doping

2019 ◽  
Author(s):  
Whitmaur Castiglioni ◽  
Alex Himmel ◽  
Bryan Ramson
Keyword(s):  
Single Phase ◽  
Signal Reconstruction ◽  
Simulation Studies ◽  
Photon Signal

Neural Network Controlled High-Step Up Based Single-Phase PV Inverter System with Improved Dynamic Response

2017 ◽  
Vol 14 (1) ◽  
pp. 421-429
Author(s):  
M. L Bharathi ◽  
D Kirubakaran
Keyword(s):  
Neural Network ◽  
Dynamic Response ◽  
Single Phase ◽  
Closed Loop ◽  
Simulation Studies ◽  
Loop Control ◽  
Pv Inverter ◽  
Simulink Model ◽  
Neural Network Controller ◽  
The Neural Network

In AC utility closed loop high step up based single phase PV inverter system is preferred because of fast dynamic response. This paper deals with comparison of dynamic response of the PI and the neural network controlled single phase PV inverter systems. The DC output from the solar cell is stepped up using a high step up converter and the output is converted into AC using an inverter. A change in the insolation is considered in the present investigation. Simulation studies are conducted using MATLAB. The closed loop control systems using the PI controller and the neural network controller are investigated and their results are compared. The Simulink model for the above system are developed and they are successfully used for simulation studies. The hardware is fabricated, tested and the practical results matches with the simulation results.

Whole Simulation of Single Phase Energy Metering Chip

2014 ◽  
Vol 1049-1050 ◽  
pp. 605-608
Author(s):  
Chun Yu Wang ◽  
Hai Bo Yu ◽  
Ying Hui Xu ◽  
Min Lei ◽  
Jia Liu
Keyword(s):  
Single Phase ◽  
Simulation Studies ◽  
Measurement Property ◽  
Pass Filter ◽  
Low Pass Filter ◽  
The Core ◽  
Simulink Model ◽  
Energy Metering ◽  
Low Pass ◽  
High Pass

Metering chip is the core of electrical meter. The accuracy of metering chip affects the measurement property of electrical meter, so it’s necessary to study the behavior of it. The simulation studies of metering chip are mostly based on part sections of it, but lack the whole simulation model. This paper proposes a Simulink model of whole metering chip based on certain one-phase metering chip by designing the ADC, high pass filter (HPF), low pass filter (LPF), and so on, and make simulation of this model. The result shows that the accuracy of this model is about 0.1%, which verifies the effectiveness of it.

scholarly journals Crucial Voltage Identification of a Seven Level Multilevel Inverters using AMM for Microgrid Applications

2019 ◽  
Vol 8 (10) ◽  
pp. 4604-4611
Keyword(s):  
High Frequency ◽  
Single Phase ◽  
Pulse Width Modulation ◽  
Modulation Method ◽  
Voltage Source ◽  
Simulation Studies ◽  
Multilevel Inverters ◽  
Asymmetric Modulation ◽  
Power Switches ◽  
And Performance

This paper presents a single-phase efficient and generalized basic topology that is adaptable for multilevel inverters. The proposed structure is run by a switching pattern of the power switches i.e, subharmonic pulse width modulation (SHPWM) or comparison of triangular carrier high-frequency waveforms with a sinusoidal reference waveform. This chapter shows an asymmetric modulation method (AMM) hybrid modulation inverter with its working and performance verified through the simulation studies conducted in MATLAB Simulink software. A test for crucial voltage identification has also been carried out that recognizes the most important voltage source that must be maintained constant, else it would adversely effect the circuit’s operation.

Analysis of Current Optimization Method on Compensation

2014 ◽  
Vol 668-669 ◽  
pp. 665-668
Author(s):  
Bin Su ◽  
Shun Tao ◽  
Xiang Ning Xiao ◽  
Tian Cai Wei
Keyword(s):  
Single Phase ◽  
Reactive Power ◽  
Rapid Development ◽  
Optimization Method ◽  
Simulation Studies ◽  
Three Phase ◽  
Optimal Current ◽  
Definition Of ◽  
Power Electronic Technology ◽  
Mathematical Derivation

Nowadays, with the rapid development of industrial technology especially the power electronic technology, harmonic and reactive power problems are becoming severer. In sinusoidal conditions, there are no controversies on the definition of power quantities. In nonsinusoidal circuits, the traditional definition of active power is still applicable while the definitions of reactive power and apparent power are in controversy. Based on an optimization current decomposing method, this paper derives the expressions of optimal current and compensating current in a single-phase and a three-phase circuit by constructing a Lagrange functions. Based on simulation studies, the compensating effect of the optimization method is analyzed and shown; it can noticeably improve the efficiency of energy transfer in circuit. The paper presents all mathematical derivation of the method and verifies the results based on simulation.

Rolling Element Bearing Diagnosis Based on Signal Reconstruction from Edited Cepstrum

2014 ◽  
Vol 915-916 ◽  
pp. 1221-1224
Author(s):  
Shi Chao Dai ◽  
Yan Gao ◽  
Yu Guo
Keyword(s):  
Signal Reconstruction ◽  
High Accuracy ◽  
Rolling Element Bearing ◽  
Simulation Studies ◽  
Characteristic Frequencies ◽  
Order Analysis ◽  
Rolling Element ◽  
Extraction Scheme ◽  
Element Bearing ◽  
Envelope Spectrum

A feature extraction scheme for rolling element bearing (REB) fault diagnosis by editing the cepstrum of the original vibration is introduced in this paper. In the presented approach, the order analysis technology is utilized to convert an even-time-spaced scaled signal to an even-angle-spaced signal by resampling the acquired signal. The discrete lines belonging to gears are removed by editing the cepstrum. Then, the signal is reconstructed from the edited cepstrum. Lastly, clear characteristic frequencies related with the faulty REB can be obtained by the envelope spectrum analysis. Simulation studies indicate that this method can be employed to detect the REB faults in a gearbox with a high accuracy by removing the strong gear vibration disturbances.

Influence of Heat Treatments on Microstructures in an Fe-Co-V Alloy

1974 ◽  
Vol 32 ◽  
pp. 512-513
Author(s):  
S. Mahajan ◽  
M. R. Pinnel ◽  
J. E. Bennett
Keyword(s):  
Single Phase ◽  
Alloy Composition ◽  
Supersaturated Solid Solution ◽  
Cell Formation ◽  
Heat Treatments ◽  
Air Cooling ◽  
Iced Brine ◽  
Transmission Electron ◽  
The Matrix ◽  
Bcc Structure

The microstructural changes in an Fe-Co-V alloy (composition by wt.%: 2.97 V, 48.70 Co, 47.34 Fe and balance impurities, such as C, P and Ni) resulting from different heat treatments have been evaluated by optical metallography and transmission electron microscopy. Results indicate that, on air cooling or quenching into iced-brine from the high temperature single phase ϒ (fcc) field, vanadium can be retained in a supersaturated solid solution (α2) which has bcc structure. For the range of cooling rates employed, a portion of the material appears to undergo the γ-α2 transformation massively and the remainder martensitically. Figure 1 shows dislocation topology in a region that may have transformed martensitically. Dislocations are homogeneously distributed throughout the matrix, and there is no evidence for cell formation. The majority of the dislocations project along the projections of <111> vectors onto the (111) plane, implying that they are predominantly of screw character.

Raman And Fluorescence Spectra Observed in Laser Microprobe Measurements of Several Compositions in the Ln-Ba-Cu-O System

1990 ◽  
Vol 48 (2) ◽  
pp. 278-279
Author(s):  
Edgar S. Etz ◽  
Thomas D. Schroeder ◽  
Winnie Wong-Ng
Keyword(s):  
Fluorescence Spectra ◽  
Single Phase ◽  
X Ray Diffraction ◽  
Ceramic Powders ◽  
Conventional Solid State Reaction ◽  
X Ray ◽  
Raman Microprobe ◽  
Methods Of Synthesis ◽  
Compositional Homogeneity ◽  
Processing Techniques

We are investigating by Raman microprobe measurements the superconducting and related phases in the LnBa2Cu3O7-x (for x=0 to 1) system where yttrium has been replaced by several of the lanthanide (Ln = Nd,Sm,Eu,Ho,Er) elements. The aim is to relate the observed optical spectra (Raman and fluorescence) to the compositional and structural properties of these solids as part of comprehensive materials characterization. The results are correlated with the methods of synthesis, the processing techniques of these materials, and their superconducting properties. Of relevance is the substitutional chemistry of these isostructural systems, the differences in the spectra, and their microanalytical usefulness for the detection of impurity phases, and the assessment of compositional homogeneity. The Raman spectra of most of these compounds are well understood from accounts in the literature.The materials examined here are mostly ceramic powders prepared by conventional solid state reaction techniques. The bulk samples are of nominally single-phase composition as determined by x-ray diffraction.

Observation of pseudo 10-fold symmetry in the ordered iron-zinc delta phase

1992 ◽  
Vol 50 (1) ◽  
pp. 36-37
Author(s):  
L. A. Giannuzzi ◽  
A. S. Ramani ◽  
P. R. Howell ◽  
H. W. Pickering ◽  
W. R. Bitler
Keyword(s):  
Single Phase ◽  
X Ray Diffraction ◽  
Rich Region ◽  
Average Cell ◽  
X Ray ◽  
Delta Phase ◽  
Cell Dimensions ◽  
Δ Phase ◽  
Morphological Differences ◽  
Concentration Discontinuity

The δ phase is a Zn-rich intermetallic, having a composition range of ∼ 86.5 - 92.0 atomic percent Zn, and is stable up to 665°C. The stoichiometry of the δ phase has been reported as FeZn7 and FeZn10 The deviation in stoichiometry can be attributed to variations in alloy composition used by each investigator. The structure of the δ phase, as determined by powder x-ray diffraction, is hexagonal (P63mc or P63/mmc) with cell dimensions a = 1.28 nm, c = 5.76 nm, and 555±8 atoms per unit cell. Later work suggested that the layer produced by hot-dip galvanizing should be considered as two distinct phases which are characterized by their morphological differences, namely: the iron-rich region with a compact appearance (δk) and the zinc-rich region with a columnar or palisade microstructure (δp). The sub-division of the δ phase was also based on differences in diffusion behavior, and a concentration discontinuity across the δp/δk boundary. However, work utilizing Weisenberg photographs on δ single crystals reported that the variation in lattice parameters with composition was small and hence, structurally, the δk phase and the δp phase were the same and should be thought of as a single phase, δ. Bastin et al. determined the average cell dimensions to be a = 1.28 nm and c = 5.71 nm, and suggested that perhaps some kind of ordering process, which would not be observed by x-ray diffraction, may be responsible for the morphological differences within the δ phase.

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