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2018 IEEE XXVII International Scientific Conference Electronics - ET最新文献

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Single Input Single Output System with Modal Adaptive State Controller 带模态自适应状态控制器的单输入单输出系统
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549611
N. Nikolov, M. Alexandrova, I. Zlateva
{"title":"Single Input Single Output System with Modal Adaptive State Controller","authors":"N. Nikolov, M. Alexandrova, I. Zlateva","doi":"10.1109/ET.2018.8549611","DOIUrl":"https://doi.org/10.1109/ET.2018.8549611","url":null,"abstract":"The literature review shows that there are not many examples of adaptive systems synthesis algorithms. The adaptive block is usually presented in the given structures but information of basic principles and adaptive algorithm implemented behind is hardly provided. The present material proposes a practical solution with accent to the synthesis of the adaptive structure of the modal state controller. The algorithms used for adaptive observation and modal control are preliminary set and developed. Auxiliary pulse-relay controller (PRC) is implemented for control purposes during the observation time, which control signal is not only dependent on the control error. It is programmed to ensure that for n steps, if the control signal $u(k)$ has been set to the lower/or higher level, it will switch for 1 step to the alternate level. This solution will guarantee sufficiently informative signal feed to the object input.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131093594","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
Simulation Investigations of a Bidirectional Series Resonant DC-DC Converter 双向串联谐振DC-DC变换器的仿真研究
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549593
A. Lichev, A. Vuchev
{"title":"Simulation Investigations of a Bidirectional Series Resonant DC-DC Converter","authors":"A. Lichev, A. Vuchev","doi":"10.1109/ET.2018.8549593","DOIUrl":"https://doi.org/10.1109/ET.2018.8549593","url":null,"abstract":"A bidirectional series resonant DC-DC converter operating at frequency higher than the resonant is examined. It consists of two identical bridge inverter stages whereby phase-shift control is achieved. The condition that defines the boundary between the two typical operating modes is defined. A 200W converter is designed. In the environment of OrCAD PSpice, a simulation model of the converter is made. By means of it, the circuit behavior is examined for different typical operating modes. Normalized values of the basic quantities are obtained and compared to existing theoretical results.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123270652","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
Digitally Programmable All-Pass CFA Filter Based on Follow-the-Leader-Feedback Topology 基于跟随领导反馈拓扑的数字可编程全通CFA滤波器
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549620
I. Pandiev
{"title":"Digitally Programmable All-Pass CFA Filter Based on Follow-the-Leader-Feedback Topology","authors":"I. Pandiev","doi":"10.1109/ET.2018.8549620","DOIUrl":"https://doi.org/10.1109/ET.2018.8549620","url":null,"abstract":"This paper describes the structure and operational principle of a digitally programmable second-order all-pass filter using monolithic current-feedback amplifiers (CFAs). The proposed filter was synthesized by using general follow-the-leader-feedback (FLF) topology and includes cascade structure of two digitally controlled RC integrators and two summing amplifiers. The filter employs independent digital control of the pole frequency within 0.1 % resolution by controlling the time constants of the two integrators through two 1024 - position monolithic digital potentiometers, used as variable resistors. By connecting the output port to the input of the created filter, an electronic circuit of quadrature oscillator is obtained. The efficiency of the proposed oscillator is demonstrated by comparing the simulation results for the basic electrical parameters with experimental results of sample electronic circuits, working up to 130 kHz with total harmonic distortion (THD) below 1 %. The obtained results show good agreement with the theoretical assumptions.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127911691","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
Mixed Reality Smart Glasses Application for Interactive Working 交互式工作的混合现实智能眼镜应用
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549615
Miglena Dontschewa, Denise Stamatov, M. Marinov
{"title":"Mixed Reality Smart Glasses Application for Interactive Working","authors":"Miglena Dontschewa, Denise Stamatov, M. Marinov","doi":"10.1109/ET.2018.8549615","DOIUrl":"https://doi.org/10.1109/ET.2018.8549615","url":null,"abstract":"Mixed reality (MR) has proven to be an efficient tool for finding solutions to problems in different areas. This paper presents the implementation of an interactive application with Microsoft HoloLens head mounted display, which enables spatial interaction with synthetically generated 3D objects. 3D manipulations, such as positioning, scaling and rotating are also included in the functionality. The application discussed here works with 3D rigid objects that physically behave properly within the VR environment. The study discusses the methods used to build a userfriendly application and the main steps for its creation.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126807461","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: 6
Mathematical Modeling of Transformerless DC-DC Converters 无变压器DC-DC变换器的数学建模
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549627
N. Hinov
{"title":"Mathematical Modeling of Transformerless DC-DC Converters","authors":"N. Hinov","doi":"10.1109/ET.2018.8549627","DOIUrl":"https://doi.org/10.1109/ET.2018.8549627","url":null,"abstract":"The paper presents mathematical models of the most widespread transformerless DC-DC converters -Buck, Boost, Buck-Boost, Sepic and Čuk. They are composed using the method of switching functions. This method is suitable for usage in engineering practice and power electronics training. The models are designed for a continuous current mode, which has a wider application than the discontinuous current mode. The specific program implementation of the models is done in MATLAB/Simulink.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116025367","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
Architectures and Challenges for the Household Energy Management Systems 家庭能源管理系统的架构和挑战
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549610
Z. Kokolanski, T. Shuminoski, C. Gavrovski
{"title":"Architectures and Challenges for the Household Energy Management Systems","authors":"Z. Kokolanski, T. Shuminoski, C. Gavrovski","doi":"10.1109/ET.2018.8549610","DOIUrl":"https://doi.org/10.1109/ET.2018.8549610","url":null,"abstract":"The Internet of Things (IoT) household energy management system (HEMS) is presented in this paper. It is the integrated application of technologies that help to improve the quality of life of the residents. Besides the energy efficiency, data extracted from HEMS combined with computer learning algorithms can be used for many other potential application areas, next to controlling household appliances and multimedia equipment, providing assistance to elderly and disabled, and increasing safety and security. This paper aims to address several opened challenges of HEMS with key focus on the metrological issues and communication architectures for data integration. It has been shown that there is a gap between the need of energy data on the appliance level and the metering hardware complexity. Undoubtedly, the realization of one possible communication architectures of HEMS has been accelerated and enabled by the novel researches and development in the Internet of Things paradigm, as the interconnection concept of intelligent devices and management platforms that collectively enable the \"smart world\" around us.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116206618","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
Study of Multiple Operation Modes of Mini, Micro and Nanogrids 小型、微型和纳米电网多种运行模式的研究
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549647
Gergana Vacheva, R. Stanev, H. Kanchev, N. Hinov
{"title":"Study of Multiple Operation Modes of Mini, Micro and Nanogrids","authors":"Gergana Vacheva, R. Stanev, H. Kanchev, N. Hinov","doi":"10.1109/ET.2018.8549647","DOIUrl":"https://doi.org/10.1109/ET.2018.8549647","url":null,"abstract":"In this paper is presented a test bench for research on multiple operation modes in small-scale power systems: micro-, mini and nanogrids. The hybrid system is composed of a photovoltaic simulator, a controllable AC load, a battery bank and SCADA system. The operation of the test bench is studied by five different scenarios in grid-connected and standalone modes. The presented test bench can be used for testing and standardization of grid-connected and standalone inverters, MPPT trackers, research on the stability of small-scale power systems and for educational purposes in the corresponding courses.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125833734","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
Behavioral Model of Perovskite Solar Cells 钙钛矿太阳能电池的行为模型
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549668
R. Rusev
{"title":"Behavioral Model of Perovskite Solar Cells","authors":"R. Rusev","doi":"10.1109/ET.2018.8549668","DOIUrl":"https://doi.org/10.1109/ET.2018.8549668","url":null,"abstract":"A behavioral model of perovskite solar cells is developed. The model equations are semi-empirical and they are coded in Matlab. The equations describe the current density, voltage and power conversion efficiency at different irradiance despite of the fact that perovskite solar cells have hysteresis characteristics. Simulation data arejuxtaposed with experimental data for a FTO/c-TiO2/mp-TiO2/MAPbI3/ OMeTAD/Au cell. The results very well predict the values for the current density and voltage at high irradiance but at low irradiance the current is underestimated and the voltage is overestimated. The mean difference of the predicted power conversion efficiency remains under 1 % regardless of the scanningreverse or forward.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130105115","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
Interactive Ambient LED Lighting System for Multimedia Applications 多媒体应用交互式环境LED照明系统
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549597
K. Angelov
{"title":"Interactive Ambient LED Lighting System for Multimedia Applications","authors":"K. Angelov","doi":"10.1109/ET.2018.8549597","DOIUrl":"https://doi.org/10.1109/ET.2018.8549597","url":null,"abstract":"The report is devoted to the development and study of an interactive LED system for ambient light effects in multimedia systems. The system realizes in particular rear ambient lighting management, which is interactively dependent on the pixel state of individual video frames of multimedia content. The practically realized system consists of two parts: a master signal processing and control module and a demonstration screen with interactive managed LED ambient backlighting. The proposed model is applicable for use with multimedia projectors and flat panel displays.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121510298","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
Sensorless Indirect Neural Control of Induction Motor 感应电机的无传感器间接神经控制
2018 IEEE XXVII International Scientific Conference Electronics - ET Pub Date : 2018-09-01 DOI: 10.1109/ET.2018.8549639
Zhivko Zhekov
{"title":"Sensorless Indirect Neural Control of Induction Motor","authors":"Zhivko Zhekov","doi":"10.1109/ET.2018.8549639","DOIUrl":"https://doi.org/10.1109/ET.2018.8549639","url":null,"abstract":"In this article is presented indirect adaptive neural sensorless control in combination with vector principle for induction motor control. Control system containing neural controllers of the speed and flux channels. Neural speed estimator is designed as a neural model of the plant. For the controllers and estimator are used on-line trained backpropagation neural networks. Simulation research confirmed sufficient system performance at wide range input signal variation is done.","PeriodicalId":374877,"journal":{"name":"2018 IEEE XXVII International Scientific Conference Electronics - ET","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130152172","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
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