LabVIEW based data management design for EV Bi-directional charger test system implementation

Author(s):  
Xuan Zhang ◽  
Longhuan Shen ◽  
Zhiming Li ◽  
Xuling Li
Author(s):  
Mohamad Khairuzzaman Mohamad Zamani ◽  
Ismail Musirin ◽  
Saiful Izwan Suliman

<p>Increasing demand experienced by electric utilities in many parts of the world involving developing country is a normal phenomenon. This can be due to the urbanization process of a system network, which may lead to possible voltage decay at the receiving buses if no proper offline study is conducted. Unplanned load increment can push the system to operate closes to its instability point. Various compensation schemes have been popularly invented and proposed in power system operation and planning. This would require offline studies, prior to real system implementation. This paper presents the implementation of Symbiotic Organisms Search (SOS) algorithm for solving optimal static VAr compensator (SVC) installation problem in power transmission systems. In this study, SOS was employed to perform voltage control study in a transmission system under several scenarios via the SVC installation scheme. This realizes the feasibility of SOS applications in addressing the compensating scheme for the voltage control study. Minimum and maximum bound of the voltage at all buses have been considered as the inequality constraints as one of the aspects. A validation process conducted on IEEE 26-Bus RTS realizes the feasibility of SOS in performing compensation scheme without violating system stability. Results obtained from the optimization process demonstrated that the proposed SOS optimization algorithm has successfully reduced the total voltage deviation index and improve the voltage profile in the test system. Comparative studies have been performed with respect to the established evolutionary programming (EP) and artificial immune system (AIS) algorithms, resulting in good agreement and has demonstrated its superiority. Results from this study could be beneficial to the power system community in the planning and operation departments in terms of giving offline information prior to real system implementation of the corresponding power system utility.</p>


2014 ◽  
Vol 496-500 ◽  
pp. 1715-1719
Author(s):  
Xing Liu ◽  
Zhi Jing Zhang ◽  
Shi Zhong Li ◽  
Xin Jin ◽  
Gao Yang Zhang

For real-time data management needs of multiple components, sets and workshops hydraulic experimental platforms, a new distributed system of real-time monitoring and data management based on LabVIEW was developed, by solving following key technologies: hydraulic data real-time monitoring and acquisition at remote distance, data management and reappearance, fault diagnosis expert system in test process. Through the experiment, monitoring in real-time and the operability of data management are confirmed.


2012 ◽  
Vol 459 ◽  
pp. 437-440
Author(s):  
Yao Hui Li ◽  
Hong Yu Wu ◽  
Yi Zhong Wu ◽  
Shu Ting Wang

This paper introduces a kind of alcohol test system composed of hardware based on alcohol instrument, and software based on data management, which is the foundation of internet wireless technology transmission platform based on embedded web server. It can provide reliable wireless sensor networks and complete information integration and conformity through sites control platform, present wireless data transmission technology and data management system in order to achieve unified management of information and law enforcement. Practice shows the alcohol test system has obvious advantages with stability, high accuracy, and strong anti-interference.


2020 ◽  
Vol 2 (2) ◽  
pp. 291-299
Author(s):  
Fransiskus Panca Juniawan ◽  
Dwi Yuny Sylfania ◽  
David Wijaya

Information in the form of an agenda made by the teacher is an important thing that parents should know, but the fact is that parents are mostly late in getting all of this information. With the real time features that have been developed in mobile applications today, this problem can be overcome. This study aims to implement the push notification function in applications used by parents and teachers in school. This application is useful as a connector that provides an agenda between users, so all parents can find out the information agenda in real time. We are using prototyping method which consists of the stages of gathering needs, building prototyping, evaluating prototyping, coding, system test, system evaluating, and system implementation. The system built runs well that proved by the blackbox testing carried out. The results of the test show that all the features of the system run intact and well.


Author(s):  
F. A. Durum ◽  
R. G. Goldman ◽  
T. J. Bolling ◽  
M. F. Miller

CMP-KDO synthetase (CKS) is an enzyme which plays a key role in the synthesis of LPS, an outer membrane component unique to gram negative bacteria. CKS activates KDO to CMP-KDO for incorporation into LPS. The enzyme is normally present in low concentrations (0.02% of total cell protein) which makes it difficult to perform large scale isolation and purification. Recently, the gene for CKS from E. coli was cloned and various recombinant DNA constructs overproducing CKS several thousandfold (unpublished data) were derived. Interestingly, no cytoplasmic inclusions of overproduced CKS were observed by EM (Fig. 1) which is in contrast to other reports of large proteinaceous inclusion bodies in various overproducing recombinant strains. The present immunocytochemical study was undertaken to localize CKS in these cells.Immune labeling conditions were first optimized using a previously described cell-free test system. Briefly, this involves soaking small blocks of polymerized bovine serum albumin in purified CKS antigen and subjecting them to various fixation, embedding and immunochemical conditions.


1992 ◽  
Vol 1 (4) ◽  
pp. 52-55 ◽  
Author(s):  
Gail L. MacLean ◽  
Andrew Stuart ◽  
Robert Stenstrom

Differences in real ear sound pressure levels (SPLs) with three portable stereo system (PSS) earphones (supraaural [Sony Model MDR-44], semiaural [Sony Model MDR-A15L], and insert [Sony Model MDR-E225]) were investigated. Twelve adult men served as subjects. Frequency response, high frequency average (HFA) output, peak output, peak output frequency, and overall RMS output for each PSS earphone were obtained with a probe tube microphone system (Fonix 6500 Hearing Aid Test System). Results indicated a significant difference in mean RMS outputs with nonsignificant differences in mean HFA outputs, peak outputs, and peak output frequencies among PSS earphones. Differences in mean overall RMS outputs were attributed to differences in low-frequency effects that were observed among the frequency responses of the three PSS earphones. It is suggested that one cannot assume equivalent real ear SPLs, with equivalent inputs, among different styles of PSS earphones.


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