Journal of Electrical, Control and Technological Research最新文献

Performance evaluation of 2.4kVA grid-tie inverter 2.4kVA并网逆变器性能评价

Journal of Electrical, Control and Technological Research Pub Date : 2020-11-30 DOI: 10.37121/jectr.vol2.134

Sunday F. Iyere, F. I. Anyasi, I. A. Idim, E. Ekwueme

{"title":"Performance evaluation of 2.4kVA grid-tie inverter","authors":"Sunday F. Iyere, F. I. Anyasi, I. A. Idim, E. Ekwueme","doi":"10.37121/jectr.vol2.134","DOIUrl":"https://doi.org/10.37121/jectr.vol2.134","url":null,"abstract":"This paper is focused on experimenting the overall performance of a 2.4kVA direct solar power supply system. The overall aim is to implement a solar power supply system without a battery back-up in order to minimize cost. The objectives include measuring the performance of grid-tie inverter, determine its period of operation under load conditions, to make the use of batteries optional in solar power supply system and minimize initial cost of installation. Various tests (variable load, fixed load and no-load) were carried out for the purpose of analysis. A dual trace digital storage oscilloscope was used to monitor the output waveform of the inverter to observe possible harmonic distortion on the waveform. The inverter takes its input power directly from the solar modules (panels) through the maximum power point tracker (MPPT) charge controller. Each category of test was conducted for at least three days of different weather conditions, to determine how variation in the sun’s intensity (irradiance) affects the operation of the inverter and its output power. Test results show that the inverter performs its function during the day apart from the early hours in the morning and later in the evening of each day, and the loads were powered successfully during the period of test. The output waveform as observed from the oscilloscope is not purely sinusoidal; it is rather a modified sine wave.","PeriodicalId":103550,"journal":{"name":"Journal of Electrical, Control and Technological Research","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131190610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of faults on bus stability on an island 330kV mesh network on the Nigerian grid 尼日利亚电网330kV岛网故障对母线稳定性的影响

Journal of Electrical, Control and Technological Research Pub Date : 2020-11-09 DOI: 10.37121/jectr.vol2.121

A. Airoboman, Ayemere P. Oriaifo, S. Wara

引用次数: 2

Design and implementation of a prototype active infrared sensor controlled automatic sliding door for mitigation of coronavirus disease 2019 (COVID-19) 新型冠状病毒病(COVID-19)主动红外传感器控制自动推拉门原型设计与实现

Journal of Electrical, Control and Technological Research Pub Date : 2020-10-28 DOI: 10.37121/jectr.vol2.122

A. Amole, M. Oyediran, O. Olusanya, W. Elegbede, A. Olusesi, A. Adeleye

{"title":"Design and implementation of a prototype active infrared sensor controlled automatic sliding door for mitigation of coronavirus disease 2019 (COVID-19)","authors":"A. Amole, M. Oyediran, O. Olusanya, W. Elegbede, A. Olusesi, A. Adeleye","doi":"10.37121/jectr.vol2.122","DOIUrl":"https://doi.org/10.37121/jectr.vol2.122","url":null,"abstract":"The door is an essential part of any structure that provides access and security of lives and properties. The manual operation of a door could be cumbersome and laborious when the traffic volume is high. Also, it has been observed that doors could serve as a medium of spreading the deadly coronavirus disease 2019 (COVID-19) infection. Therefore, a prototype automatic sliding door that plays a crucial role in curbing the spread of this infectious diseases has been designed and implemented in this paper. The design of the prototype sliding door is in two parts namely; the structural part and the automation part. The structural design of the door was achieved using the Microsoft Visio 2016 while the design of the automation system was achieved using express printed circuit board. The implementation of the structural part was achieved using 1 inch particle board while the implementation of the automation system was based on the components like the active infrared sensor, resistors (10 kΩ), capacitor (1000 µF), transistors (TIP41 Q8, BC548 Q7), LED indicators, press button switch, pulley system, drive belt, stepper motor (IP65), and ATMEGA 8 microcontroller. The result of the tests carried out on the door showed that the prototype automatic sliding door was characterized by average opening time, closing time, delay time, and optimal sensing range of 3.10 s, 3.05 s, 5.72 s, and 23.5 cm, respectively. It can therefore be concluded from this work that the prototype automatic sliding door is effective in overriding the manual operation of the door.","PeriodicalId":103550,"journal":{"name":"Journal of Electrical, Control and Technological Research","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128149309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Reliability optimization on power systems network using genetic algorithm 基于遗传算法的电力系统网络可靠性优化

Journal of Electrical, Control and Technological Research Pub Date : 2020-10-13 DOI: 10.37121/jectr.vol2.119

A. Airoboman, E. A. Ogujor

{"title":"Reliability optimization on power systems network using genetic algorithm","authors":"A. Airoboman, E. A. Ogujor","doi":"10.37121/jectr.vol2.119","DOIUrl":"https://doi.org/10.37121/jectr.vol2.119","url":null,"abstract":"In this study, reliability optimization of a non-linear transmission network using Genetic Algorithm (GA) based optimization approach is presented and proposed. A GA based algorithm was developed for Koko, Guinness, Nekpenekpen, Ikpoba-Dam, Switch station, Etete and GRA 33kV tertiary transmission feeders within Benin Metropolis, Nigeria and was used to determine the optimal performance of the feeders’ reliability and availability through the minimization of downtime and the Mean Time between Failure (MTBF) by the appropriate selection of the objective functions and constraints. The equality and inequality constraints for each feeder on the network were defined, thereafter, codes were written on the Matlab 2016a environment to optimize the selected parameters. The results from the study showed a reduction in downtime of 5.63%, 26.87%, 34.20%, 5.42% 8.37%, 5.18% and 10.97% and an increment increased in MTBF by 4.95%, 19.87%, 4.58%, 3.85%, 4.88%, 5.77% and 13.56% for Guinness, Etete, Nekpenekpen, GRA, Switch station and Ikpoba-Dam feeders respectively. The obtained results, therefore, yielded an average corresponding improvement on the network’s reliability and availability by 1.85% and 2.83% respectively. Conclusively, the desired result reached in this paper validates the robustness of the GA tool in reliability studies. However, conscious effort must be geared concerning the ways and manners the system is operated in order to achieve desired results.","PeriodicalId":103550,"journal":{"name":"Journal of Electrical, Control and Technological Research","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123421724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Development of an RFID-based security door system 基于rfid的防盗门系统的开发

Journal of Electrical, Control and Technological Research Pub Date : 2020-07-29 DOI: 10.37121/jectr.vol1.112

S. Emakpor, Emmanuel Esekhaigbe

引用次数: 2

Response characteristics of a negative temperature coefficient thermistor 负温度系数热敏电阻的响应特性

Journal of Electrical, Control and Technological Research Pub Date : 2020-07-29 DOI: 10.37121/jectr.vol1.113

Sunday F. Iyere, Bernard O. A. Ozigi, J. Yeboah

引用次数: 0

Analysis of energy revenue and electrical power losses in distribution line 配电线路的能源收益和电力损耗分析

Journal of Electrical, Control and Technological Research Pub Date : 2020-07-29 DOI: 10.37121/jectr.vol1.114

O. A. Osahenvemwen, S. Ogunbor, J. Okhaifoh

引用次数: 1

Analysis of radio frequency spectrum usage using cognitive radio 使用认知无线电分析无线电频谱的使用情况

Journal of Electrical, Control and Technological Research Pub Date : 2020-07-29 DOI: 10.37121/jectr.vol1.111

Munirah Shuaibu-Sadiq, F. I. Anyasi

{"title":"Analysis of radio frequency spectrum usage using cognitive radio","authors":"Munirah Shuaibu-Sadiq, F. I. Anyasi","doi":"10.37121/jectr.vol1.111","DOIUrl":"https://doi.org/10.37121/jectr.vol1.111","url":null,"abstract":"This paper presents the analysis of radio frequency (RF) spectrum usage using cognitive radio. The aim was to determine the unused spectrum frequency bands for efficiently utilization. A program was written to reuse a range of vacant frequency with different model element working together to produce a spectrum sensing in MATLAB/Simulink environment. The developed Simulink model was interfaced with a register transfer level - software defined radio, which measures the estimated noise power of the received signal over a given time and bandwidth. The threshold estimation performed generates a 10 output for decision and prediction. It was observed that some spectrum, identified as vacant frequency, were underutilized in FM station in Benin City. The result showed that when cognitive radio displays “1” output, which is decision H1, the channel is occupied and cannot be used by the cognitive radio for communication. Conversely, when “0” output (decision H0) is displayed, the channel is unoccupied. There is a gradual decrease in the probability of detection (Pd), when the probability of false alarm (Pfa) is increased from 1% to 5%. In the presence of higher Pfa, the Pd of the receiver maintains a high stability. Hence, the analysis finds the spectrum hole and identifies how it can be reused","PeriodicalId":103550,"journal":{"name":"Journal of Electrical, Control and Technological Research","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127688212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0