Serbian Journal of Electrical Engineering最新文献_第7页

Control of an isolated microgrid including renewable energy resources 控制一个孤立的微电网，包括可再生能源

Serbian Journal of Electrical Engineering Pub Date : 2020-01-01 DOI: 10.2298/sjee2003297f

Omar Feddaoui, R. Toufouti, D. Labed, S. Meziane

{"title":"Control of an isolated microgrid including renewable energy resources","authors":"Omar Feddaoui, R. Toufouti, D. Labed, S. Meziane","doi":"10.2298/sjee2003297f","DOIUrl":"https://doi.org/10.2298/sjee2003297f","url":null,"abstract":"It is now more then a choice to use small-distributed generators (DGs) based on renewable energy resources (RES) due to their benefits in minimizing environmental problems and simplifying power system planning and operation. The integration of DGs in the main grid or in forming a standalone microgrid (MG) is increasing day by day and became as an alternative solution to large conventional central power stations and as a key for the electrification of rural areas. This paper presents an overall comparison of controlling the MG system combining between different DGs in islanded mode. Energy management system (EMS) applied is mainly an essential task to maintain an ideal flow of energy in between generation and consumption, many are strategies to do so, the artificial intelligence (AI) (highlighted) is one of the most advantages methods to help sizing, optimizing, and power energy managing. To solve this problem in this paper we present a Fuzzy Logic Control of isolated MG in comparison with a classic PI control system to see the different influences in maintaining stability in voltage and frequency output especially in the standalone application. The considered HRES combines a wind turbine (WT) and photovoltaic (PV) and an energy storage system (ESS). Simulation results obtained from MATLAB/Simulink environment demonstrates the effectiveness of the proposed intelligent artificial algorithm.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68753805","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

Big Data and development of smart city: System architecture and practical public safety example 大数据与智慧城市发展:系统架构与公共安全实例

Serbian Journal of Electrical Engineering Pub Date : 2020-01-01 DOI: 10.2298/sjee2003337s

M. Simić, M. Perić, Ilija V. Popadic, D. Peric, Miloš Pavlović, Miljan Vucetic, M. Stanković

{"title":"Big Data and development of smart city: System architecture and practical public safety example","authors":"M. Simić, M. Perić, Ilija V. Popadic, D. Peric, Miloš Pavlović, Miljan Vucetic, M. Stanković","doi":"10.2298/sjee2003337s","DOIUrl":"https://doi.org/10.2298/sjee2003337s","url":null,"abstract":"The concept of Smart City started its development path around two to three decades ago; it has been mainly influenced and driven by radical changes in technological, social and business environments. Big Data, Internet of Things and Networked Cyber-Physical Systems, together with the concepts of Cloud, Fog and Edge Computing, have tremendous impact on the development of Smart City, reforming its frame and tasks and redefining its requirements and challenges. We consider feasible architectures of the IT infrastructure and signal processing, taking into account aspects of Big Data, followed by summary of benefits and main challenges, like security of infrastructure and private data. As a practical example we present a public safety application of multi-sensor imaging system: a smart device with target detection subsystem based on artificial intelligence used for activation of target tracking. The experiments have been performed in the cities of Abu Dhabi and Belgrade, which have very different environment. The experiments have shown the effects of videostreaming compression on thermal imagers and the importance of distributed processing power that optimizes requirements for amount of transmitted data and delay.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68753871","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

Analytical solution for determination of induction machine acceleration based on Kloss equation 基于Kloss方程确定感应电机加速度的解析解

Serbian Journal of Electrical Engineering Pub Date : 2020-01-01 DOI: 10.2298/sjee2002247k

Nikola Koljčević, Željko Fuštić, M. Ćalasan

引用次数: 1

A novel planar antenna array for a ground-based synthetic aperture radar 一种新型地面合成孔径雷达平面天线阵

Serbian Journal of Electrical Engineering Pub Date : 2019-06-01 DOI: 10.2298/SJEE1902195V

S. Vincent, Sharmila Anand John Francis, K. Raimond, T. Ali, O. Kumar

{"title":"A novel planar antenna array for a ground-based synthetic aperture radar","authors":"S. Vincent, Sharmila Anand John Francis, K. Raimond, T. Ali, O. Kumar","doi":"10.2298/SJEE1902195V","DOIUrl":"https://doi.org/10.2298/SJEE1902195V","url":null,"abstract":"A MIMO GB-SAR system called MELISSA was put in place to monitor landslides in Italy and the sinking of the Costa Concordia cruise liner in France. It comprises 12 pyramidal horn antennas placed in a linear geometry for transmission, and these are used in the detection of the motion of a target (for example a landslide or other terrestrial deformation). The low half power beam width (19.76° at θ = 90°) of the transmitting radiation pattern of MELISSA results in low coverage area of the target. This paper proposes two alternative types of horn antenna for the current transmitter module of MELISSA, namely the cantenna and coaxial cavity horn antenna, for installation in a 2×6 planar antenna array. A higher value of the 3 dB beamwidth is observed using these arrays (38.320 at θ = 90° and 104.80 at φ = 0° for the cantenna array and 410 at θ = 90° and 140.40 at φ = 0° for the coaxial cavity horn antenna array). The overall gain of the proposed systems is around 10 dBi, and the efficiencies are between 85% and 90%. Using the Dolph Chebyshev beamforming technique on the proposed antenna arrays yields a zero sidelobe level, which improves the overall peak sidelobe ratio of the system and in turn the quality of the images obtained. Our proposed design for the transmitting section of the MELISSA system has applications terrestrial deformation monitoring with higher area coverage","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45312652","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

Method of constructing a space-time grid of variable size images and its application in image processing of landfills 变尺寸图像的时空网格构造方法及其在垃圾填埋场图像处理中的应用

Serbian Journal of Electrical Engineering Pub Date : 2019-01-01 DOI: 10.2298/SJEE1901123R

A. Richter, Y. Ignatiev, M. Kazaryan, V. Voronin, Mihail Shakhramanyan

{"title":"Method of constructing a space-time grid of variable size images and its application in image processing of landfills","authors":"A. Richter, Y. Ignatiev, M. Kazaryan, V. Voronin, Mihail Shakhramanyan","doi":"10.2298/SJEE1901123R","DOIUrl":"https://doi.org/10.2298/SJEE1901123R","url":null,"abstract":"The paper proposes a method of slicing space images into areas of varying sizes to automate the image processing, beginning from the receipt of raw data (download pictures) up to mapping of the underlying surface indices. Indices calculation are based on one image (the surface and the vegetation indices temperature, indices of objects detection on the ground and etc.) and their time series (conducting temporal processing). The downloading of the sources of satellite images algorithm from the sites archives of geodata from the initial data download (the observation area, stage, time period, etc.) is also represented. The procedure of cutting images into segments of varying sizes is described. It allows to use the ?contents? of image both in general and for each pixel of the earth's surface to have a whole time series of the spectral brightness coefficients. Examples of time series of geo-referenced source images and the individual indices of the underlying surface are automatically generated by the algorithm method, for specific problems of space debris monitoring (vegetation indices reaction, the degree of soil degradation, detection of indices).","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68752469","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: 1

Wireless data transmission in underwater hydroacoustic environment based on MIMO-OFDM system and application adaptive algorithm at the receiver side 基于MIMO-OFDM系统和接收端应用自适应算法的水下水声环境无线数据传输

Serbian Journal of Electrical Engineering Pub Date : 2019-01-01 DOI: 10.2298/sjee1901071f

V. Fedosov, A. Legin

{"title":"Wireless data transmission in underwater hydroacoustic environment based on MIMO-OFDM system and application adaptive algorithm at the receiver side","authors":"V. Fedosov, A. Legin","doi":"10.2298/sjee1901071f","DOIUrl":"https://doi.org/10.2298/sjee1901071f","url":null,"abstract":"To increase the transmission speed in wireless data transmission systems, it is necessary to change either the bandwidth or the spectral efficiency, or both simultaneously. Systems based on Multi-Input Multi-Output (MIMO) methods can significantly increase spectral efficiency through parallel transmission using several transmitters and receivers. Such systems are particularly attractive for use in underwater acoustic communications systems, which are normally bandwidth-reduced. MIMO system along with OFDM (Orthogonal Frequency-Division Multiplexing) is a popular technology used in wireless networks to provide a high data transfer rate and resistance to multipath and fading of the channel. The implementation of such a system requires being aware of the channel condition at the receiver, and can be provided by means of using channel parameter estimation schemes. The adaptation task on the receiving side, apart from peak of pattern formation in the direction of the signal expected, also includes the interference-source suppression, that is, the issue of implementing spatial filtering of interference from other directions. However, since the signal and noise direction of arrival are unknown, we get a system with adaptive antenna array (AA). In the proposed research, a phase antenna array was used with controlled weighing.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68752297","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: 2

Nonlinear optimization of proportional-integral controller in doubly-fed induction generator using the Gradient Extremum Seeking algorithm 基于梯度极值求法的双馈感应发电机比例积分控制器非线性优化

Serbian Journal of Electrical Engineering Pub Date : 2019-01-01 DOI: 10.2298/sjee1902161s

A. A. Sarić, A. Lj.

{"title":"Nonlinear optimization of proportional-integral controller in doubly-fed induction generator using the Gradient Extremum Seeking algorithm","authors":"A. A. Sarić, A. Lj.","doi":"10.2298/sjee1902161s","DOIUrl":"https://doi.org/10.2298/sjee1902161s","url":null,"abstract":", Abstract: This paper deals with the problem of nonlinear optimization of proportional-integral (PI) controller in doubly-fed induction generator (DFIG), modeled by the detailed differential-algebraic equations (DAEs), and connected to a power system, where rest of the power system is represented only by measurements in connection point. The basic functions of PI controllers are secondary regulation of speed–active power and reactive power–voltage of multiple DFIGs connected in the same point (typical situation in wind farms). In the presence of PI controllers, stability of the transient responses depends largely on its parameters (proportional and integral part). To calculate optimal parameters of the PI controllers, an ‘Extremum Seeking’ (ES) algorithm was used, more precisely, its version that assumes that gradient can be calculated [hence the name ‘Gradient Extremum Seeking’ (GES)]. Optimization of the PI controller parameters is performed for a list of major disturbance trajectories recorded in historical database. The results obtained using the IEEE 14-bus test system show that PI controller parameters must be carefully chosen. Their effect on transient responses and stability of the power system with major disturbance (short circuit, outage etc.) conditions was additionally studied.","PeriodicalId":37704,"journal":{"name":"Serbian Journal of Electrical Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68752640","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: 1

Direct and indirect self-tuning generalized minimum variance control 直接和间接自整定广义最小方差控制

Serbian Journal of Electrical Engineering Pub Date : 2019-01-01 DOI: 10.2298/sjee1902149k

Hayder Kareem Jasim, A. Jasim, Mohammed Yousif Abase, Thamer Abdullah Ahmed

引用次数: 0

Benchmarking of phase lock loop based synchronization algorithms for grid-tied inverter 并网逆变器锁相环同步算法的基准测试

Serbian Journal of Electrical Engineering Pub Date : 2019-01-01 DOI: 10.2298/SJEE1901001F

Filip R. Filipović, Bojan G. Banković, M. Petronijević, Nebojša N. Mitrović, V. Kostic

引用次数: 6

Online algorithms for scheduling transactions on python software transactional memory 在python软件事务性内存上调度事务的在线算法

Serbian Journal of Electrical Engineering Pub Date : 2019-01-01 DOI: 10.2298/SJEE1901085P

M. Popovic, B. Kordic, M. Popovic, I. Basicevic

引用次数: 3