scholarly journals РОЗРОБЛЕННЯ ЕКСПЕРИМЕНТАЛЬНОЇ УСТАНОВКИ ДЛЯ ВИПРОБУВАНЬ ПРОГРАМНО-АПАРАТНИХ ЗАСОБІВ УПРАВЛІННЯ МІКРОЕНЕРГЕТИЧНИМИ МЕРЕЖАМИ ЛОКАЛЬНИХ ОБ’ЄКТІВ

2021 ◽  
Vol 148 (4) ◽  
pp. 14-24
Author(s):  
О. О. Шавьолкін ◽  
І. О. Шведчикова ◽  
Г. В. Кругляк ◽  
Р. М. Марченко ◽  
А. В. Пісоцький
Keyword(s):  
Experimental Research ◽  
Radiation Power ◽  
Practical Importance ◽  
Photovoltaic System ◽  
Storage Battery ◽  
Experimental Setup ◽  
Daily Cycle ◽  
Static Tests ◽  
Experimental Installation ◽  
Software And Hardware

Development of the experimental installation for testing of the software and hardware tools of management of a photovoltaic system of a local facility connected to the grid, which, along with checking its operability, will allow analyzing the operation and adjusting the settings of systems with different parameters under different weather conditions, load schedules and operating modes. Method. Experimental research with preliminary justification of settings based on calculations and simulation data obtained in the Matlab software package. Results.  The  structure  and  experimental  installation  on  the  base  of  the  photovoltaic  system  with storage  battery  and  using  a  photovoltaic  battery  emulator  with  software  control  of  generation  and  load power were developed. The software modules of the system have been developed. According to the results of the simulation, the moments of time are determined when the operating mode is switched in the experimental setup. The experimental setup was tested in static and dynamic modes. Static tests were aimed at checking the functioning of the photovoltaic battery emulator in accordance with the specified solar radiation power and  the  temperature  of  the  photo  module,  as  well  as  checking  the  correctness  of  the  model  used  in  the program. Tests in statics with fixed parameters and in dynamics in the daily cycle, in general, confirmed the efficiency of the proposed solutions. Scientific novelty. The method of experimental research in the daily cycle of photovoltaic systems control with the use of software-controlled emulators of a photovoltaic battery and load with power and time scaling  was  developed.  This,  along  with  the  acceleration  of  the  experiment,  allows  us  to  estimate  the effectiveness  of  the  tested  systems  at  different  ratios  of  system  parameters  and  adjust  the  functioning algorithms.  Practical  importance.  The  proposed  solutions  for  the  implementation  of  the  experimental installation  allow  minimizing  material  costs  and  time  costs  in  the  process  of  testing  and  development  of software and hardware control tools of a photovoltaic system with storage battery.

scholarly journals Performance of Rooftop Grid Connected Solar Photovoltaic System

2020 ◽  
Vol 9 (1) ◽  
pp. 1056-1062
Keyword(s):  
Electric Power ◽  
Power Efficiency ◽  
Polycrystalline Silicon ◽  
Photovoltaic System ◽  
Experimental Setup ◽  
Solar Photovoltaic ◽  
Grid System ◽  
Time Data ◽  
Solar Power Generation ◽  
Solar Photovoltaic System

Solar Technology is fast becoming a preferred trend in the field of electric power. This is because of the fact that solar energy, freely available is transferred into electric power without causing any environment hazard. Commercial power system is grid organized system. Therefore, the solar system also needs cooperative to established grid system. Grid connected solar photovoltaic system is a friendly and affordable system for large solar power generation. These systems exhibit good power efficiency beside of their other advantages. Here we pursue our studies on 150 KW grid connected SPV system. In this paper we design and model a 150 KW SPV system and compared its performance with the real time data collected by us through our experimental setup. The experimental setup is based on the module provided by RenewSys DESERV 3M6 with 72 cells on SPV module. This module is a polycrystalline silicon module and was manufactured in the year 2018 and purchased in the same year. In this study important effects that the performance degradation is also considered and the overall results obtained are found satisfactory

Development of an experimental setup for intraoperative angiography system

2021 ◽  
Author(s):  
I.A. Kudashov ◽  
N.V. Kalmykov ◽  
A.R. Alexandrov ◽  
P.G. Ryazantsev ◽  
S.I. Shchukin ◽  
...  
Keyword(s):  
Blood Vessels ◽  
Intraoperative Imaging ◽  
Objective Assessment ◽  
Locally Advanced ◽  
Practical Importance ◽  
Clinical Problem ◽  
The Body ◽  
Experimental Setup ◽  
Intraoperative Angiography ◽  
Vessel Imaging

The treatment of locally advanced tumors of the head and neck presents serious difficulties due to the difficulty of localizing growths, namely the proximity to vital organs and systems of the body (brain, large blood vessels) and the small size of the areas of intervention limits the choice of treatment methods. So, the development of helper methods and hardware of intraoperative visualization of blood vessels is relevant. So, the development of auxiliary methods and hardware means of intraoperative blood vessel imaging for objective assessment of adequacy of blood supply and differentiated recognition of anatomical structures is especially relevant in biomedical optics. The aim of the work is to create an experimental setup for the development, testing and modification of the algorithms for improving the quality of the image of blood vessels against the background of surrounding tissues by optical method. The article is devoted to technological and program features of developing and creating an experimental setup for intraoperative imaging. Clinical problem of the necessity of vessel imaging has been established. Current state of intraoperative vessel imaging has been analyzed. Structure of the setup has been determined. The requirements for parts of the setup have been formulated. Usage of the chlorophyll as a new liquid for blood substitution has been experimentally justified. A MATLAB-based model for quality evaluation of functions of the setup has been developed. The experimental results obtained in the article are of great practical importance for the development of a biotechnological system for intraoperative vessel imaging.

Design of a Portable Solar Photovoltaic-Driven Refrigerator

2011 ◽  
Vol 383-390 ◽  
pp. 6066-6070
Author(s):  
Yu Fang Zang ◽  
Hua Zhang ◽  
Shi Lin Xu ◽  
Zi Long Wang ◽  
Tian Hui Zhang
Keyword(s):  
Photovoltaic System ◽  
Storage Battery ◽  
Solar Photovoltaic ◽  
Night Time ◽  
Public Power ◽  
The Public ◽  
Solar Photovoltaic System ◽  
Supply Mode ◽  
And Storage ◽  
Electric Supply

According to the characteristic of solar photovoltaic, this paper designed an electric supply mode, combined with the solar photovoltaic system, the storage battery and the public power supply, to drive a portable refrigerator which could use outdoor. The refrigerator is installed two individual refrigeration systems with two special arranged evaporators and wind route for storing beverages under the sunlight. Besides, the refrigerator electricity supply has three ways including utilizing solar energy with sun shining, taking advantage of the storage battery in night time and making use of the public power while the sunlight is unavailable. Various tests are carried out to examine the performance of the system. The voltages and currents which are generated by the solar cell and monitored on refrigerator have been studied. In addition, an analysis in power consumption of the system is realized. The results indicated that the refrigerator could run normally and indeed satisfy the request in beverage cooling and storage.

Experimental Research Regarding the Influence of Hydraulic Resistances on the Hydrostatic Guideways Stiffness

2014 ◽  
Vol 657 ◽  
pp. 475-479
Author(s):  
Marius Pascu ◽  
Gheorghe Stan
Keyword(s):  
Machine Tool ◽  
Hydraulic Resistance ◽  
Experimental Research ◽  
Machine Tools ◽  
Dynamic Stiffness ◽  
Experimental Results ◽  
Graphical Form ◽  
Experimental Setup ◽  
Experimental Database ◽  
Supply Circuit

A very important factor for the hydrostatic guideways is given by the presence of the restrictor on the supply circuit, whose hydraulic resistance may have important effects on the lubricant film behaviour and implicitly, on the static and dynamic stiffness of the system. This paper presents a new method of experimental research regarding the hydrostatic guideway stiffness, depending on the hydraulic resistances values which supply each pocket. During the experiments which approach the influence of the hydraulic resistances values of the restrictors on the hydrostatic guideway stiffness, a centered constant loads of 20, 50 and 100 [daN] was used. The experiments were carried out on an experimental setup composed of an open hydrostatic guideway, having the pocket dimensions of 150x88 [m, supplied with liquid under pressure through means of a pack of adjustable restrictors. The obtained experimental results are presented in both tabular and graphical form and constitute an experimental database which can be used by the machine tools designers and manufacturers. The paper contains recommendations regarding the usage of hydraulic resistances values depending on the machine tool type and size. Also, from the obtained results, recommendations can be made with regard to the type of restrictors to be used, so that the lubricant filtration grade is comprised between admissible values.

scholarly journals Parameter Identification and Effect of Partial Shading on a Photovoltaic System

2018 ◽  
Vol 64 ◽  
pp. 06006
Author(s):  
Hajizadeh Amin ◽  
Warrier Anil Kumar Jishnu
Keyword(s):  
Power Loss ◽  
Photovoltaic System ◽  
Experimental Setup ◽  
Slight Improvement ◽  
Pv System ◽  
Partial Shading ◽  
Matlab Simulink ◽  
Simulink Model ◽  
Bypass Diode ◽  
Experimental Parameters

Partial shading cause significant losses to the performance of a photovoltaic (PV) system. So, it is imperative to study effects of partial shading; for that a two-diode model of the experimental setup made. Upon verifying the model with the experimental parameters, a MATLAB/Simulink model is made based on this model. Various shading patterns, the effect of bypass diodes; the effect of overlapping bypass diode is studied on this MATLAB/Simulink model. It is found out that the reduction in power loss is depended on the location of the shaded cell but not the area of the shaded cell. Also, the over-lapping bypass diode configuration has a slight improvement in the PV performance compared to the non-overlapping bypass diode configuration. An experimental test is also conducted by applying different shading pattern and they proves the results are compatible with the simulated results.

Experimental Research on Steel Frame Structures of Mobile Buildings

2013 ◽  
Vol 351-352 ◽  
pp. 280-283
Author(s):  
Xue Feng Cai ◽  
Meng Yi Lian ◽  
Zheng Zhang ◽  
Yong Chao Ma ◽  
Ji Zhong Zhou
Keyword(s):  
Mechanical Behavior ◽  
Experimental Research ◽  
Steel Frame ◽  
Wind Loads ◽  
Frame Structures ◽  
Static Tests ◽  
Steel Frame Structures

Static tests were conducted on a two-story mobile building under wind loads, and the building is composed of two box units of steel frame structures. The mechanical behavior and the deformation performance of the structures were investigated. Based on the principle of static equivalent, the horizontal loads to load points of the top of the columns were imposed to simulate the wind loads. The displacement values and relative shifting values of the frame structures were obtained. The tests results show that the horizontal deflections of the mobile buildings are greatly affected by the relative shifting of the separate box units. And the conclusion also applies to the container buildings.

scholarly journals The application of hybrid photovoltaic system on the ocean-going ship: engineering practice and experimental research

2018 ◽  
Vol 18 (1) ◽  
pp. 56-66 ◽  
Author(s):  
Yuwei Sun ◽  
Xinping Yan ◽  
Chengqing Yuan ◽  
Xujing Tang ◽  
Reza Malekian ◽  
...  
Keyword(s):  
Experimental Research ◽  
Photovoltaic System ◽  
Engineering Practice ◽  
Ship Engineering
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