Pub Date : 2018-10-01DOI: 10.1109/ICEPE.2018.8559605
Sahand Liasi, Zakaria Afshar, M. J. Harandi, Shokrollah Shokri Kojori
Doubly fed induction generator (DFIG) based wind turbines must support the grid during faults and voltage sag/swells. In this regard, Low voltage ride through (LVRT) and High voltage ride through (HVRT) could be used to improve DFIG performance. In this paper, a control strategy, based on fuzzy control, has been proposed to improve DFIG LVRT and HVRT capability. The effectiveness and performance of this method has been validated by MATLAB/SIMULINK simulation for both voltage sag and swell under various fault conditions. In addition, this method has been compared with some conventional methods and proficiencies have been discussed.
{"title":"An Improved Control Strategy for DVR in order to Achieve both LVRT and HVRT in DFIG Wind Turbine","authors":"Sahand Liasi, Zakaria Afshar, M. J. Harandi, Shokrollah Shokri Kojori","doi":"10.1109/ICEPE.2018.8559605","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559605","url":null,"abstract":"Doubly fed induction generator (DFIG) based wind turbines must support the grid during faults and voltage sag/swells. In this regard, Low voltage ride through (LVRT) and High voltage ride through (HVRT) could be used to improve DFIG performance. In this paper, a control strategy, based on fuzzy control, has been proposed to improve DFIG LVRT and HVRT capability. The effectiveness and performance of this method has been validated by MATLAB/SIMULINK simulation for both voltage sag and swell under various fault conditions. In addition, this method has been compared with some conventional methods and proficiencies have been discussed.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131204064","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 : 2018-10-01DOI: 10.1109/ICEPE.2018.8559763
I. Picioroagă, M. Eremia, Mihai Sănduleac
Accelerated evolution of technology and rising level of globalization have encouraged the emergence of a new concept of urban communities. Smart City model can efficiently incorporate the most recent scientific solutions in daily activities of cities, and improve living quality by integrating social resources, infrastructure modernization and economic growth. Although this novel concept is gaining more and more attention, a smart city assessment system is rarely applied in order to evaluate urban development situation, leading to unjustified decision making and unnecessary investments. In this regard, the formulation of a relevant set of key indicators is mandatory for measuring performance of cities development. The goal of the paper is to provide a comprehensive evaluation model for this system of indicators, focusing on energy and environment concerns as study subjects. With the assistance of computer programs, the z-transformation and Analytic Hierarchy Process methods are implemented for the evaluation algorithm construction. The presented model seeks to investigate the development profiles of various cities around the world, but also to carry out comparisons between performances of the selected cities.
{"title":"SMART CITY: Definition and Evaluation of Key Performance Indicators","authors":"I. Picioroagă, M. Eremia, Mihai Sănduleac","doi":"10.1109/ICEPE.2018.8559763","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559763","url":null,"abstract":"Accelerated evolution of technology and rising level of globalization have encouraged the emergence of a new concept of urban communities. Smart City model can efficiently incorporate the most recent scientific solutions in daily activities of cities, and improve living quality by integrating social resources, infrastructure modernization and economic growth. Although this novel concept is gaining more and more attention, a smart city assessment system is rarely applied in order to evaluate urban development situation, leading to unjustified decision making and unnecessary investments. In this regard, the formulation of a relevant set of key indicators is mandatory for measuring performance of cities development. The goal of the paper is to provide a comprehensive evaluation model for this system of indicators, focusing on energy and environment concerns as study subjects. With the assistance of computer programs, the z-transformation and Analytic Hierarchy Process methods are implemented for the evaluation algorithm construction. The presented model seeks to investigate the development profiles of various cities around the world, but also to carry out comparisons between performances of the selected cities.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131844816","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 : 2018-10-01DOI: 10.1109/ICEPE.2018.8559661
A. Moldoveanu, D. Popescu
Promotion of renewable energy sources (RES) utilization within the small hydropower plants (SHP) development must be done according to the RES-E Directive 28/2009/EC and taking into account the Water Framework Directive 60/2000/EC requirements for the environmental objectives achievement (ecological flow). The paper presents the hydropower potential assessment of the Sercaia River performed with the VAPIDRO-ASTE and SMART Mini-Idro software in order to identify the best location for small hydropower plants. The main results consist in finding the recommended installed capacity, the expected mean annual electricity production corresponding to the operation time of a small hydropower plant and the identification of an optimized hydropower scheme with 3 simulated small hydropower plant facilities.
{"title":"Optimized Implementation of Small Hydropower Plants on a River. Case Study","authors":"A. Moldoveanu, D. Popescu","doi":"10.1109/ICEPE.2018.8559661","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559661","url":null,"abstract":"Promotion of renewable energy sources (RES) utilization within the small hydropower plants (SHP) development must be done according to the RES-E Directive 28/2009/EC and taking into account the Water Framework Directive 60/2000/EC requirements for the environmental objectives achievement (ecological flow). The paper presents the hydropower potential assessment of the Sercaia River performed with the VAPIDRO-ASTE and SMART Mini-Idro software in order to identify the best location for small hydropower plants. The main results consist in finding the recommended installed capacity, the expected mean annual electricity production corresponding to the operation time of a small hydropower plant and the identification of an optimized hydropower scheme with 3 simulated small hydropower plant facilities.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133845124","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 : 2018-10-01DOI: 10.1109/ICEPE.2018.8559646
J. Mindykowski
This paper presents an analysis of the threats and adequate counter – measures connected with impact of staff competences on power quality – related ship accidents. Competence gap is analyzed on the basis of the selected case studies for passenger ships and chemical tankers, and concerns the main discrepancies such as: insufficient knowledge about protection systems of critical devices for ship power plant operation as well as human errors in ship tests, day-to-day routine and periodical service and operation. The carried out analysis, is not only emphasized on the role of the human factor in ship system design, development and exploitation, but first of all is addressed to safety lessons, how to limit a hazard connected with crew member behavior in both, routine and unpredictable situations.
{"title":"Impact of staff competences on power quality – related ship accidents","authors":"J. Mindykowski","doi":"10.1109/ICEPE.2018.8559646","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559646","url":null,"abstract":"This paper presents an analysis of the threats and adequate counter – measures connected with impact of staff competences on power quality – related ship accidents. Competence gap is analyzed on the basis of the selected case studies for passenger ships and chemical tankers, and concerns the main discrepancies such as: insufficient knowledge about protection systems of critical devices for ship power plant operation as well as human errors in ship tests, day-to-day routine and periodical service and operation. The carried out analysis, is not only emphasized on the role of the human factor in ship system design, development and exploitation, but first of all is addressed to safety lessons, how to limit a hazard connected with crew member behavior in both, routine and unpredictable situations.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114486992","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 : 2018-10-01DOI: 10.1109/ICEPE.2018.8559785
Rusu Alexandru Viorel, D. Lucache
This document presents a study regarding the importance of balancing the phases properly in a three-phase 400 V.a.c. network with single phase consumers. The practical part of the paper has two case studies: one in which we present different arrangements for a circuit of fifteen lamps and calculate the losses, and one in which we consider Oradea city network and calculate the energy loss and costs generated in one year for the arrangements presented in case study one.
{"title":"Economic Advantages in Proper Balancing of Phases in Street Lighting Design","authors":"Rusu Alexandru Viorel, D. Lucache","doi":"10.1109/ICEPE.2018.8559785","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559785","url":null,"abstract":"This document presents a study regarding the importance of balancing the phases properly in a three-phase 400 V.a.c. network with single phase consumers. The practical part of the paper has two case studies: one in which we present different arrangements for a circuit of fifteen lamps and calculate the losses, and one in which we consider Oradea city network and calculate the energy loss and costs generated in one year for the arrangements presented in case study one.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114606099","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 : 2018-10-01DOI: 10.1109/ICEPE.2018.8559847
R. Burlica, D. Astanei, A. Dragomir, M. Adam
The paper presents the possibility to use a fault current differential circuit breaker for overvoltage protection. Using voltage threshold semiconductor devices, Zener diodes, the overvoltage that occurs in low voltage circuits induces a current imbalance in the electromagnetic trigger of the differential protection circuit breaker (MID) and as a result the differential built-in protection disconnects the powercircuit.
{"title":"Overvoltage Differential Protection of Low Voltage Circuits","authors":"R. Burlica, D. Astanei, A. Dragomir, M. Adam","doi":"10.1109/ICEPE.2018.8559847","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559847","url":null,"abstract":"The paper presents the possibility to use a fault current differential circuit breaker for overvoltage protection. Using voltage threshold semiconductor devices, Zener diodes, the overvoltage that occurs in low voltage circuits induces a current imbalance in the electromagnetic trigger of the differential protection circuit breaker (MID) and as a result the differential built-in protection disconnects the powercircuit.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114758527","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 : 2018-10-01DOI: 10.1109/ICEPE.2018.8559601
Ungureanu Constantin, C. Popa, R. Pentiuc
The paper presents the study and operating control of an progressive wave type ultrasonic motor (PWUM). The experimental study tracked the behavior of the PWUM in no load operation. Further, the experimental study highlighted the behavior under load conditions by determining useful power and useful torque. Also, the locked torque, for different rotational speeds was determined. Throughout the experimental study, the temperature of the PWUM was monitored by means of a temperature sensor mounted on its housing. Also, the experimental methods for the PWUM rotational speed changing are presented and tested.
{"title":"Characteristic Analysis of the USR-60 Rotary Ultrasonic Motor","authors":"Ungureanu Constantin, C. Popa, R. Pentiuc","doi":"10.1109/ICEPE.2018.8559601","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559601","url":null,"abstract":"The paper presents the study and operating control of an progressive wave type ultrasonic motor (PWUM). The experimental study tracked the behavior of the PWUM in no load operation. Further, the experimental study highlighted the behavior under load conditions by determining useful power and useful torque. Also, the locked torque, for different rotational speeds was determined. Throughout the experimental study, the temperature of the PWUM was monitored by means of a temperature sensor mounted on its housing. Also, the experimental methods for the PWUM rotational speed changing are presented and tested.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114826138","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 : 2018-10-01DOI: 10.1109/ICEPE.2018.8559951
M. Poboroniuc, D. Irimia, A. Baciu, Teodora Bondar, Ilona Alexandra Niţică, Andrei Emanuel Piseru
Functional Electrical Stimulation is a rehabilitative technique aiming to induce controlled muscle contractions by means of small charge electrical pulses provided to the nerve suppling the targeted muscle. FES-based standing-up, standing and sitting-down exercises in some paraplegic patients are thought to help in preventing osteoporosis, improving movement at lower limb joints, improving digestion, respiration and urinary drainage, and much more helps the user in performing transfer motions as wheel chair-toilet, wheel chair-bed, and reaching various needed objects on shelves higher than their wheel-chair level. Any of these FES-based exercise phases has to be properly controlled in order to ensure a safe and comfortable movement. This paper presents a new fuzzy controller aiming to support sitting-down in paraplegia by controlling the quadriceps muscles and/or hamstrings muscles of the user by means of electrical stimulation. Its effectiveness has been tested in simulation, and compared with other clinically tested controllers when fed with real clinical tests data.
{"title":"A Fuzzy Controller to Support FES-Based Sitting-Down in Paraplegia","authors":"M. Poboroniuc, D. Irimia, A. Baciu, Teodora Bondar, Ilona Alexandra Niţică, Andrei Emanuel Piseru","doi":"10.1109/ICEPE.2018.8559951","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559951","url":null,"abstract":"Functional Electrical Stimulation is a rehabilitative technique aiming to induce controlled muscle contractions by means of small charge electrical pulses provided to the nerve suppling the targeted muscle. FES-based standing-up, standing and sitting-down exercises in some paraplegic patients are thought to help in preventing osteoporosis, improving movement at lower limb joints, improving digestion, respiration and urinary drainage, and much more helps the user in performing transfer motions as wheel chair-toilet, wheel chair-bed, and reaching various needed objects on shelves higher than their wheel-chair level. Any of these FES-based exercise phases has to be properly controlled in order to ensure a safe and comfortable movement. This paper presents a new fuzzy controller aiming to support sitting-down in paraplegia by controlling the quadriceps muscles and/or hamstrings muscles of the user by means of electrical stimulation. Its effectiveness has been tested in simulation, and compared with other clinically tested controllers when fed with real clinical tests data.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123618081","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 : 2018-10-01DOI: 10.1109/ICEPE.2018.8559893
D. Taralunga, Alexandra-Maria Tăuțan, G. Ungureanu
Fetal heart rate (fHR) and fetal heart rate variability (fHRV) are the main biomedical parameters that are used to investigate cardiac disorders and to identify episodes of stress which are exercised on the fetus during pregnancy. Thus, stages of hypoxia can be identified and precise actions can be taken by the physicians. The fetal phonocardiogram (fPCG), which is the representation of the sounds produced by the fetal heart during a cardiac cycle, can be used to derive the fetal heart rate. It has the advantage that it is obtained via a very simple and cost-effective method. However, the main limitation is the very low signal to noise ratio (SNR) because the acoustic sensor records also other events: maternal organ sounds (mOS), maternal heart sounds (mHS) and other acoustic events produced by different sources (background noise, reverberation noise etc). The separation of the fetal heart sounds (fHS) from this acoustic mixture is not simple because some components present high correlation in frequency domain with the fHS. Thus, the most disturbing component is the mHS signal which is narrowband and non-stationary. In this paper is proposed a method for fHS enhancement based on Wavelet and Hilbert transform analysis. The performance of the proposed method in fHS extraction is evaluated with the simulated fPCG database from PhysioBank. Results indicate promising performance in correct localization of the fHS reaching an overall performance of 90%.
{"title":"An Efficient Method for Fetal Heart Sounds Detection Based on Hilbert Transform","authors":"D. Taralunga, Alexandra-Maria Tăuțan, G. Ungureanu","doi":"10.1109/ICEPE.2018.8559893","DOIUrl":"https://doi.org/10.1109/ICEPE.2018.8559893","url":null,"abstract":"Fetal heart rate (fHR) and fetal heart rate variability (fHRV) are the main biomedical parameters that are used to investigate cardiac disorders and to identify episodes of stress which are exercised on the fetus during pregnancy. Thus, stages of hypoxia can be identified and precise actions can be taken by the physicians. The fetal phonocardiogram (fPCG), which is the representation of the sounds produced by the fetal heart during a cardiac cycle, can be used to derive the fetal heart rate. It has the advantage that it is obtained via a very simple and cost-effective method. However, the main limitation is the very low signal to noise ratio (SNR) because the acoustic sensor records also other events: maternal organ sounds (mOS), maternal heart sounds (mHS) and other acoustic events produced by different sources (background noise, reverberation noise etc). The separation of the fetal heart sounds (fHS) from this acoustic mixture is not simple because some components present high correlation in frequency domain with the fHS. Thus, the most disturbing component is the mHS signal which is narrowband and non-stationary. In this paper is proposed a method for fHS enhancement based on Wavelet and Hilbert transform analysis. The performance of the proposed method in fHS extraction is evaluated with the simulated fPCG database from PhysioBank. Results indicate promising performance in correct localization of the fHS reaching an overall performance of 90%.","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117116886","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 : 2018-10-01DOI: 10.1109/icepe.2018.8559673
{"title":"EPE 2018 Index","authors":"","doi":"10.1109/icepe.2018.8559673","DOIUrl":"https://doi.org/10.1109/icepe.2018.8559673","url":null,"abstract":"","PeriodicalId":343896,"journal":{"name":"2018 International Conference and Exposition on Electrical And Power Engineering (EPE)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126136250","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：