This paper presents a comparative study of inverters used in the wireless transmission of electricity: fullbridge, half-bridge, half-bridge with mid-voltage point capacitors, class E. The inverter simulation was performed in Matlab Simulink using resistive and reactive loads (LC, RLC). The paper’s purpose is to achieve a multidimensional comparative analysis of each type of inverter used in high-frequency voltages coils supplying for wireless power transmission, determining the advantages and disadvantages for each type o load.
{"title":"A multidimensional comparative analysis of inverters used in wireless power transfer","authors":"Mocanu Vlad, Dobref Vasile, Deliu Florenţiu, Popa Nicolae-Silviu","doi":"10.1109/eeae53789.2022.9831412","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831412","url":null,"abstract":"This paper presents a comparative study of inverters used in the wireless transmission of electricity: fullbridge, half-bridge, half-bridge with mid-voltage point capacitors, class E. The inverter simulation was performed in Matlab Simulink using resistive and reactive loads (LC, RLC). The paper’s purpose is to achieve a multidimensional comparative analysis of each type of inverter used in high-frequency voltages coils supplying for wireless power transmission, determining the advantages and disadvantages for each type o load.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121834589","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831252
T. Gueorguiev, D. Tonev, Svetlin Parvanov
The paper presents a critical measurement systems analysis (MSA) of the implementation of "go-no go" gauges for control of mechanical parts. The MSA by attributes is generally overlooked when compared to MSA by variables. Nevertheless, this type of MSA is especially useful when applied in mass production where the use of variable gauges is time-consuming and costly. The outcomes of the study can be adapted to similar measurement systems analysis for other manufacturing processes and mechanical parts.
{"title":"A Study of Measurement Systems Analysis by Attributes","authors":"T. Gueorguiev, D. Tonev, Svetlin Parvanov","doi":"10.1109/eeae53789.2022.9831252","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831252","url":null,"abstract":"The paper presents a critical measurement systems analysis (MSA) of the implementation of \"go-no go\" gauges for control of mechanical parts. The MSA by attributes is generally overlooked when compared to MSA by variables. Nevertheless, this type of MSA is especially useful when applied in mass production where the use of variable gauges is time-consuming and costly. The outcomes of the study can be adapted to similar measurement systems analysis for other manufacturing processes and mechanical parts.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"8 7-8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120920040","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831351
D. Saliev, K. Dimitrov, G. Mladenov, Tsvetan Valkovski
This article examines the possibility of recognizing the individual biological units of a specific cattle population, determining their number and physical condition from digital images, using software solutions and systems on a particular pasture.
{"title":"Study of the cattle population with the help of remote digital photography and videography","authors":"D. Saliev, K. Dimitrov, G. Mladenov, Tsvetan Valkovski","doi":"10.1109/eeae53789.2022.9831351","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831351","url":null,"abstract":"This article examines the possibility of recognizing the individual biological units of a specific cattle population, determining their number and physical condition from digital images, using software solutions and systems on a particular pasture.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121123605","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831277
C. Oancea
Responsibility for environmental protection belongs to man and has led to a number of actions at various levels (global, continental, regional / zonal, national, local). To achieve this goal, the development of an environmental monitoring system with improved features is a solution. The innovative character is related to the use of a LiDAR (Light Detection and Ranging) distance type sensor to monitor the environment, more precisely to track the physical changes that may occur. The fact that a video camera is not used ensures the robustness of the method, in addition to the lower cost. Basically, the LiDAR sensor is an additional method of tracking possible changes in the environment (deforestation, natural disasters). The objectives to be achieved in this article are related to the establishment of a method for adapting the signal from a LiDAR sensor, used to be integrated in a sensor network structure. Practical solutions to ensure a stable sensor signal are identified and analyzed. By the fact that this type of sensor communicates on a serial bus, a versatility of the presented solution is ensured, being possible an implementation in any programming language and operating system that allows serial communication.
{"title":"Optimizing the operation of the LiDAR sensor","authors":"C. Oancea","doi":"10.1109/eeae53789.2022.9831277","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831277","url":null,"abstract":"Responsibility for environmental protection belongs to man and has led to a number of actions at various levels (global, continental, regional / zonal, national, local). To achieve this goal, the development of an environmental monitoring system with improved features is a solution. The innovative character is related to the use of a LiDAR (Light Detection and Ranging) distance type sensor to monitor the environment, more precisely to track the physical changes that may occur. The fact that a video camera is not used ensures the robustness of the method, in addition to the lower cost. Basically, the LiDAR sensor is an additional method of tracking possible changes in the environment (deforestation, natural disasters). The objectives to be achieved in this article are related to the establishment of a method for adapting the signal from a LiDAR sensor, used to be integrated in a sensor network structure. Practical solutions to ensure a stable sensor signal are identified and analyzed. By the fact that this type of sensor communicates on a serial bus, a versatility of the presented solution is ensured, being possible an implementation in any programming language and operating system that allows serial communication.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122281609","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831311
Hristo Milushev, N. Djagarov, M. Bonev, J. Djagarova
Bow thrusters are used in marine vessels, ships and boats. Bow thrusters are propulsion devices who improve maneuverability of the ship. They enable easy movement of a ship in confined areas and also for docking purposes. The article proposes a mathematical model of a ship power plant feeding a bow thruster based on a synchronous reluctance motor. With the help of the model, different modes of operation of the power plant were studied, as well as transient modes caused by the control system, as well as by disturbances from the external environment.
{"title":"Investigation of the Processes in a Ship 's Bow Thruster with Synchronous Reluctance Motor","authors":"Hristo Milushev, N. Djagarov, M. Bonev, J. Djagarova","doi":"10.1109/eeae53789.2022.9831311","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831311","url":null,"abstract":"Bow thrusters are used in marine vessels, ships and boats. Bow thrusters are propulsion devices who improve maneuverability of the ship. They enable easy movement of a ship in confined areas and also for docking purposes. The article proposes a mathematical model of a ship power plant feeding a bow thruster based on a synchronous reluctance motor. With the help of the model, different modes of operation of the power plant were studied, as well as transient modes caused by the control system, as well as by disturbances from the external environment.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124002016","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831216
Ivelina Vardeva
The article presents one of the aspects affecting network security, in particular accessibility to communication devices by executing a sequence of rules for a specific time interval. Intuitionistic fuzzy estimators were used to calculate the degrees of membership non-membership and hesitation margin of the packets falling into the allowed lists. Generalized nets and indexed matrices are used to modeling the processes described port knocking.
{"title":"Intuitionistic Fuzzy Estimations of Implementation of Port Knocking on Routeros","authors":"Ivelina Vardeva","doi":"10.1109/eeae53789.2022.9831216","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831216","url":null,"abstract":"The article presents one of the aspects affecting network security, in particular accessibility to communication devices by executing a sequence of rules for a specific time interval. Intuitionistic fuzzy estimators were used to calculate the degrees of membership non-membership and hesitation margin of the packets falling into the allowed lists. Generalized nets and indexed matrices are used to modeling the processes described port knocking.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"14 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126235603","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831365
A. Manukova-Marinova, K. Krastev
The report addresses issues related to a comprehensive analysis of the elements of the system for monitoring industrial processes. Methods for managing the technological process on a completely new basis by assessing current parameters to ensure the efficiency of production processes and the ability to manage the system according to the presented indicators are presented. The synthesized electronic system for monitoring and control of industrial processes provides technological security and high quality of the final product. The conducted research proves that the obtained experimental results and estimates fall within the permissible limits determined by the standards. A human-machine interface to an electronic system has been developed to qualify the finished product and achieve efficiency, accuracy in monitoring and control of production processes, as well as visualization of the received evaluation.
{"title":"Innovative Approach in the Implementation of an Electronic System for Monitoring and Control of Production Processes","authors":"A. Manukova-Marinova, K. Krastev","doi":"10.1109/eeae53789.2022.9831365","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831365","url":null,"abstract":"The report addresses issues related to a comprehensive analysis of the elements of the system for monitoring industrial processes. Methods for managing the technological process on a completely new basis by assessing current parameters to ensure the efficiency of production processes and the ability to manage the system according to the presented indicators are presented. The synthesized electronic system for monitoring and control of industrial processes provides technological security and high quality of the final product. The conducted research proves that the obtained experimental results and estimates fall within the permissible limits determined by the standards. A human-machine interface to an electronic system has been developed to qualify the finished product and achieve efficiency, accuracy in monitoring and control of production processes, as well as visualization of the received evaluation.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127491960","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831369
I. Evstatiev, G. Georgiev
The flow of information exchange between employers and job seekers - students, PhD students, alumni - are analyzed. The tasks of the career centres to organize and direct the information flows for vacancies in the conditions of a pandemic are presented. A web-based platform is presented, which supports a database for students, PhD students and alumni. The platform allows employers to prepare and send messages to students, taking their professional fields and specialties into account. The relational schema of the database is also presented, as well as the process of publishing a message in the system.
{"title":"Web-based Platform - a Defining Factor for Career Orientation Under the Conditions of a Pandemic","authors":"I. Evstatiev, G. Georgiev","doi":"10.1109/eeae53789.2022.9831369","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831369","url":null,"abstract":"The flow of information exchange between employers and job seekers - students, PhD students, alumni - are analyzed. The tasks of the career centres to organize and direct the information flows for vacancies in the conditions of a pandemic are presented. A web-based platform is presented, which supports a database for students, PhD students and alumni. The platform allows employers to prepare and send messages to students, taking their professional fields and specialties into account. The relational schema of the database is also presented, as well as the process of publishing a message in the system.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129052318","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831413
Neli Simeonova, Ginko Georgiev, Rumen Kirov, Venelin Ivanov
The research on the different characteristics of the power supply system (PSS) of a port complex is done in order to identify measures to improve the operating modes. In general, the features and requirements for the power supply and electrical equipment of the site are presented and the main energy parameters of the main consumers are marked. A theoretical formulation of the study has been synthesized, giving the opportunity to make an analysis of the characteristic coefficients of energy consumption and the additional power losses from the unevenness of the load schedule. A total of seven power substations and 11 outputs were examined and the measurements were performed with professional network analyzers. The results are presented in tabular form and provide an opportunity to make a thorough analysis of the state of the PSS of the site. Based on them, technological solutions can be offered to rationalize the electricity supply and achieve savings in electricity.
{"title":"Opportunities for rationalization the electricity consumption of a port complex","authors":"Neli Simeonova, Ginko Georgiev, Rumen Kirov, Venelin Ivanov","doi":"10.1109/eeae53789.2022.9831413","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831413","url":null,"abstract":"The research on the different characteristics of the power supply system (PSS) of a port complex is done in order to identify measures to improve the operating modes. In general, the features and requirements for the power supply and electrical equipment of the site are presented and the main energy parameters of the main consumers are marked. A theoretical formulation of the study has been synthesized, giving the opportunity to make an analysis of the characteristic coefficients of energy consumption and the additional power losses from the unevenness of the load schedule. A total of seven power substations and 11 outputs were examined and the measurements were performed with professional network analyzers. The results are presented in tabular form and provide an opportunity to make a thorough analysis of the state of the PSS of the site. Based on them, technological solutions can be offered to rationalize the electricity supply and achieve savings in electricity.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133894548","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}
Pub Date : 2022-06-30DOI: 10.1109/eeae53789.2022.9831198
H. Fidan, S. Stankov, I. Iliev, V. Gandova, A. Stoyanova, Ivaila Dincheva
The chemical composition of six essential oils from three different species of the genus Mentha was determined by GC/MS analysis. The main components in the essential oils were monoterpene oxygen derivatives. The main components in the three samples of the species Mentha piperita L. were menthol (30.35-41.53%), menthone (17.030-22.00%), 1,8-cineole (4.97-5.87%), menthyl acetate (6.45-10.47%), and iso-menthone (3.67-4.90%). The chemical composition of the two samples of M. arvensis L. was presented by menthol (30.35-36.33%), menthone (20.08-20.50%), menthofuran (5.85-9.18%), and α-terpineol (7.18%). Carvone (58.22%) was identified as the major component in M. spicata essential oil sample.
{"title":"Chemical composition of essential oils from different Mentha ssp","authors":"H. Fidan, S. Stankov, I. Iliev, V. Gandova, A. Stoyanova, Ivaila Dincheva","doi":"10.1109/eeae53789.2022.9831198","DOIUrl":"https://doi.org/10.1109/eeae53789.2022.9831198","url":null,"abstract":"The chemical composition of six essential oils from three different species of the genus Mentha was determined by GC/MS analysis. The main components in the essential oils were monoterpene oxygen derivatives. The main components in the three samples of the species Mentha piperita L. were menthol (30.35-41.53%), menthone (17.030-22.00%), 1,8-cineole (4.97-5.87%), menthyl acetate (6.45-10.47%), and iso-menthone (3.67-4.90%). The chemical composition of the two samples of M. arvensis L. was presented by menthol (30.35-36.33%), menthone (20.08-20.50%), menthofuran (5.85-9.18%), and α-terpineol (7.18%). Carvone (58.22%) was identified as the major component in M. spicata essential oil sample.","PeriodicalId":441906,"journal":{"name":"2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE)","volume":"472 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134063876","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}