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Wyświetlanie 1-3 z 3
Tytuł:
Mikroprocesorowy rejestrator PDOC-16/U
Microprocessor recorder PDOC-16/U
Autorzy:
Żygadło, M.
Powiązania:
https://bibliotekanauki.pl/articles/151527.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
system pomiarowy
rejestrator mikroprocesorowy
measuring system
DVR microprocessor
Opis:
Artykuł dotyczy systemu pomiarowego, który jest przeznaczony do wielokanałowych pomiarów wielkości fizycznych takich jak: temperatura, ciśnienie, przemieszczenie. Przedstawiono ogólną strukturę systemu oraz zaprezentowano szczegółowy opis głównego elementu systemu – rejestratora mikroprocesorowego wraz z jego wewnętrznym oprogramowaniem.
The paper deals with a description of the measuring system as an example of the equipment-related solution based on the application of micro-processing techniques and electric methods of physical quantity measurement to the examination of basic phenomena influencing the process of filling the metal with font mould. From the functional perspective, the described measuring system is meant for multi-channel measurements of such physical quantities as temperature, pressure, displacement. Owing to this, it is also possible to take advantage of the said system in investigating the phenomena indirectly connected with the process of pouring the metal into the moulds, such as the course of shrinkage, shrinkage stresses within a mould as well as metal and alloy crystallization. The author discusses a general structure of the system and presents a detailed description of its main component, i.e. the micro-processing recorder. A simple, as regards the equipment, realization of a multi-channel measurement of temperature and other quantities is described, special attention being paid to the important feature of the recorder, namely the complete, mutual galvanic isolation of all the measurement channels. The description of the recorder internal software is briefly presented.
Źródło:
Pomiary Automatyka Kontrola; 2014, R. 60, nr 4, 4; 237-240
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Voltage quality improvement using DVR
Autorzy:
Benachaiba, Ch.
Ferdi, B.
Powiązania:
https://bibliotekanauki.pl/articles/262805.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
Dynamic Voltage Restorer (DVR)
voltage sags (dips)
voltage swells
custom power
power quality
Opis:
The problem of voltage sags and Swells and its severe impact on sensitive loads is well known. To solve this problem, custom power devices are used. One of those devices is the Dynamic Voltage Restorer (DVR), which is the most efficient and effective modern custom power device used in power distribution networks. Its appeal includes lower cost, smaller size, and its fast dynamic response to the disturbance. This paper describes DVR principles and voltage restoration methods at the point of common coupling (PCC ). Simulation results are presented to illustrate and understand the performances of DVR in load voltage compensation.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2008, 14, 1; 39-46
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reparation of voltage disturbance using PR controller-based DVR in Modern power systems
Autorzy:
Danalakshmi, D.
Prathiba, Srividya
Ettappan, M.
Krishna, Mohan D.
Powiązania:
https://bibliotekanauki.pl/articles/1839555.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
smart grid
jakość energii elektrycznej
regulator PI i PR
ewolucja
DVR
współczynnik zawartości harmonicznych
power quality
PI and PR controller
self balanced differential
evolution
dynamic voltage restorer
total harmonic distortion
Opis:
The Smart Grid environment gives more benefits for the consumers, whereas the power quality is one of the challenging factors in the smart grid environment. To protect the system equipment and increase the reliability, different filter technologies are used. Even though, consumers’ expectations towards the power quality are not fulfilled. To overcome these drawbacks and enhance the system reliability, a new Custom Power Devices (CPD) are introduced in the system. Among different CPDs, the Dynamic Voltage Restorer (DVR) is one of the voltage compensating devices that is used to improve the power quality during distortions. When the distortions such as voltage swell and sag occur in the distribution system, the control strategy in the DVR plays a significant role. In this article, the DVR performance using Proportional Integral (PI), Proportional Resonant (PR) controllers are analyzed. A robust optimization algorithm called Self Balanced Differential Evolution (SBDE) is used to find the optimal gain values of the controllers in order to reach the target of global minimum error and obtain fast response. Then, a comparative analysis is performed between different controllers and verified that the performance of PR controller is superior than the other controllers. It has been found that the proposed PR controller strategy reduces the Total Harmonic Distortion (THD) values for all types of faults. The proposed SBDE optimized DVR with PR controller reduces the THD value less than 4% under voltage distoration condition. The DVR topology is validated in MATLAB/SIMULINK in order to detect the disturbance and inject the voltage to compensate the load voltage.
Źródło:
Production Engineering Archives; 2021, 27, 1; 16-29
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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