A Current-Sensor-Free Incremental Conductance Single Cell MPPT for High Performance Vehicle Solar Arrays

One of the communication technologies that can be used for monitoring current usage is communication technology via electric grids or what is called Power Line Communication (PLC). The advantages of this technology are that the electricity network is already distributed in each building so there is no need for new installations, it is economical and affordable in terms of economics, and is more practical and flexible in its use. In this study, a current usage monitoring system using PLC is proposed which will be applied in every class in the AI ??building of Malang State Polytechnic. The sensor that will be used in measuring the current value is the current sensor SCT-013. By using the KQ330 PLC module as a PLC transmission modem. The implementation of PLC which is applied in each class in the AI ??building has a BER (bit error rate) value of 0.012 in the experiment of sending 1000 data with an error of 12 times at the farthest distance of approximately 15 meters. And have a BER value of 0 or have no error in sending data at the closest distance of approximately 2-5 meters. In this study, the process of sending and receiving data using Power Line Communication allows it to be done at a distance that is not too far away to avoid excessive data errors.

Download Full-text

Sensor of Current or Magnetic Field Based on Magnetoresistance Effect in (La0.7Ca0.3)0.8Mn1.2O3 Manganite Film

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.154.157 ◽

2009 ◽

Vol 154 ◽

pp. 157-161 ◽

Cited By ~ 4

Author(s):

V.P. Dyakonov ◽

S. Piechota ◽

K. Piotrowski ◽

A. Szewczyk ◽

H. Szymczak ◽

...

Keyword(s):

Magnetic Field ◽

Short Circuit ◽

Operation Time ◽

Electric Circuit ◽

Current Sensor ◽

Detectable Change ◽

Magnetoresistance Effect ◽

Manganite Film ◽

Current Value ◽

A Current

The main objective of the performed investigations was to enhance sensitivity of a current sensor to weak changes of magnetic field. New design of the sensor of current based on magnetoresistance effect – MRE (MRE = (RH - R0)/R0 , where RH is the resistance in magnetic field and R0 is the resistance without magnetic field) was developed. The sensor was produced in the form of an annular magnet with a gap, in which the (La0.7Sr0.3)0.8Мn1.2О3 manganite film possessing large negative MRE was inserted. Nominal current in a controllable electric circuit can change from a few tenths parts of ampere to a hundred of amperes. The limit detectable change of current value depends on the size of gap in the annular magnet. The operation time of sensor at current overload and short circuit is less than 0.3 sec. These magnetoresistors are thermally stable over the temperature range from (- 50 ° С) to (+ 50 ° С). Proposed sensors based on MRE can be applied in many electrical arrangements and devices.

Download Full-text

Testing of solid oxide cells at high current densities

tm - Technisches Messen ◽

10.1515/teme-2021-0102 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

André Weber

Keyword(s):

Single Cell ◽

High Performance ◽

High Efficiency ◽

Electrochemical Impedance ◽

Single Cells ◽

Operating Conditions ◽

Solid Oxide ◽

Current Densities ◽

Cell Testing ◽

The Impact

Abstract Solid Oxide Cells (SOCs) have gained an increasing interest as electrochemical energy converters due to their high efficiency, fuel flexibility and ability of reversible fuel cell/electrolysis operation. During the development process as well as in quality assurance tests, the performance of single cells and cell stacks is commonly evaluated by means of current/voltage- (CV-) characteristics. Despite of the fact that the measurement of a CV-characteristic seems to be simple compared to more complex, dynamic methods as electrochemical impedance spectroscopy or current interrupt techniques, the resulting performance strongly depends on the test setup and the chosen operating conditions. In this paper, the impact of different single cell testing environments and operating conditions on the CV-characteristic of high performance cells is discussed. The influence of cell size, contacting and current collection, contact pressure, fuel flow rate and composition on the achievable cell performance is presented and limitations arising from the test bed and testing conditions will be pointed out. As today’s high performance cells are capable of delivering current densities of several ampere per cm2 a special emphasis will be laid on single cell testing in this current range.

Download Full-text

Viewpoint on the manuscript by Zachary S. Hartwig et al “VIPER: An industrially scalable high current, high temperature superconductor cable” 2020 Supercond. Sci. Technol. 33

Superconductor Science and Technology ◽

10.1088/1361-6668/ac3929 ◽

2021 ◽

Author(s):

Michael Parizh

Keyword(s):

High Temperature ◽

High Performance ◽

High Temperature Superconductor ◽

High Current ◽

A Current

Abstract HTS tokamak SPARC is under development by the team lead by CFS, Cambridge, MA. The magnet will have toroidal coils operating at 20 T at a current in the 25 to 40 kA range. The ViewPoint describes VIPER, an advanced TSTC-based HTS cable that has a potential to meet all the criteria required for the HTS tokamak. If proven to be successful, the cable approach promises long lengths, hundreds of meters, of the high-performance cable with predictable and repeatable properties.

Download Full-text

A single-cell RNA-sequencing training and analysis suite using the Galaxy framework

GigaScience ◽

10.1093/gigascience/giaa102 ◽

2020 ◽

Vol 9 (10) ◽

Author(s):

Mehmet Tekman ◽

Bérénice Batut ◽

Alexander Ostrovsky ◽

Christophe Antoniewski ◽

Dave Clements ◽

...

Keyword(s):

Single Cell ◽

Rna Sequencing ◽

Cell Biology ◽

High Performance ◽

Learning Experience ◽

Sequencing Analysis ◽

Teaching Resources ◽

Single Cell Rna Sequencing ◽

The Galaxy ◽

Downstream Analysis

Abstract Background The vast ecosystem of single-cell RNA-sequencing tools has until recently been plagued by an excess of diverging analysis strategies, inconsistent file formats, and compatibility issues between different software suites. The uptake of 10x Genomics datasets has begun to calm this diversity, and the bioinformatics community leans once more towards the large computing requirements and the statistically driven methods needed to process and understand these ever-growing datasets. Results Here we outline several Galaxy workflows and learning resources for single-cell RNA-sequencing, with the aim of providing a comprehensive analysis environment paired with a thorough user learning experience that bridges the knowledge gap between the computational methods and the underlying cell biology. The Galaxy reproducible bioinformatics framework provides tools, workflows, and trainings that not only enable users to perform 1-click 10x preprocessing but also empower them to demultiplex raw sequencing from custom tagged and full-length sequencing protocols. The downstream analysis supports a range of high-quality interoperable suites separated into common stages of analysis: inspection, filtering, normalization, confounder removal, and clustering. The teaching resources cover concepts from computer science to cell biology. Access to all resources is provided at the singlecell.usegalaxy.eu portal. Conclusions The reproducible and training-oriented Galaxy framework provides a sustainable high-performance computing environment for users to run flexible analyses on both 10x and alternative platforms. The tutorials from the Galaxy Training Network along with the frequent training workshops hosted by the Galaxy community provide a means for users to learn, publish, and teach single-cell RNA-sequencing analysis.

Download Full-text