Abstract The paper presents modelling and control of very common actuator, DC motor. The control of the DC motor was implemented with the Model predictive control (MPC) controller based on Legendre orthonormal functions. As PID (Proportional-Integral-Derivative) controller is simple and effective controller, mainly used in industrial applications, above mentioned MPC controller’s performance was compared to the PID controller performance. A criterion used is the fastest response with the maximum of 2% overshoots with step input and step disturbance treated.
{"title":"Legendre Orthonormal Functions Based Model Predictive Control of DC Motor","authors":"Amila Dubravić, Anel Hasić","doi":"10.2478/bhee-2019-0005","DOIUrl":"https://doi.org/10.2478/bhee-2019-0005","url":null,"abstract":"Abstract The paper presents modelling and control of very common actuator, DC motor. The control of the DC motor was implemented with the Model predictive control (MPC) controller based on Legendre orthonormal functions. As PID (Proportional-Integral-Derivative) controller is simple and effective controller, mainly used in industrial applications, above mentioned MPC controller’s performance was compared to the PID controller performance. A criterion used is the fastest response with the maximum of 2% overshoots with step input and step disturbance treated.","PeriodicalId":236883,"journal":{"name":"B&H Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124369806","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}
Abstract This research paper in its first part focuses on the theoretical concepts of “innovation”, “innovation Management”, and “ICT innovation management”. The second part of the paper aims to follow results of the survey (research methodology) in determining whether the innovation is of interest to the participants of the survey. It questions whether ICT innovations are the key for economic development of the country, or if the interviewees own their (patented) ICT innovative product. It questions where the interviewees find motivation for creation of ICT innovation and if the managers consider opening vacancies for ICT innovation development. It questions whether they are familiar with the Strategy of Innovation Incentives in the Republic of Croatia, in the period 2014-2020, or whether the interviewees believe it was real and achieved. Did the interviewees know that the Republic of Croatia was behind Slovenia, Hungary and Bulgaria according to the Index of Innovation, and if they agree with the statement that innovations are the source of real competitive advantage of individual business, and one of the most efficient ways for sustainable prosperity. Are the SMEs (small and medium enterprises) the cornerstones for development of modern economy?
{"title":"ICT Innovation Management for the Economic Development Purposes","authors":"Matija Varga","doi":"10.2478/bhee-2019-0010","DOIUrl":"https://doi.org/10.2478/bhee-2019-0010","url":null,"abstract":"Abstract This research paper in its first part focuses on the theoretical concepts of “innovation”, “innovation Management”, and “ICT innovation management”. The second part of the paper aims to follow results of the survey (research methodology) in determining whether the innovation is of interest to the participants of the survey. It questions whether ICT innovations are the key for economic development of the country, or if the interviewees own their (patented) ICT innovative product. It questions where the interviewees find motivation for creation of ICT innovation and if the managers consider opening vacancies for ICT innovation development. It questions whether they are familiar with the Strategy of Innovation Incentives in the Republic of Croatia, in the period 2014-2020, or whether the interviewees believe it was real and achieved. Did the interviewees know that the Republic of Croatia was behind Slovenia, Hungary and Bulgaria according to the Index of Innovation, and if they agree with the statement that innovations are the source of real competitive advantage of individual business, and one of the most efficient ways for sustainable prosperity. Are the SMEs (small and medium enterprises) the cornerstones for development of modern economy?","PeriodicalId":236883,"journal":{"name":"B&H Electrical Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116744942","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}
Abstract Power systems around the world have undergone a number of important organizational, structural and technological changes over the past few decades; they are a direct consequence of the electricity market liberalization and transition from conventional energy conversion technologies towards renewable resources. These changes represent many advantages as well as challenges for the Distribution System Operator (DSO). The aim of this paper is to review the most important principles, objectives and technical criteria used in planning the development of the electricity distribution network. Presented principles can be used as basic guidelines when developing short-term and long-term plans for the construction and reconstruction of power distribution facilities. This paper also presents a methodological approach to the planning and ranking of proposed electricity facilities with an example from practice that is based on the real planning problem in ED Mostar. The basic conclusion of the paper is that the identification of objectives, criteria and the application of an appropriate and unique methodology is of the utmost importance for formulating the framework of the planning process.
{"title":"Distribution Network Planning Methodology With Ed Mostar Case Study","authors":"M. Saric, J. Hivziefendic, Haris Ahmetović","doi":"10.2478/bhee-2019-0007","DOIUrl":"https://doi.org/10.2478/bhee-2019-0007","url":null,"abstract":"Abstract Power systems around the world have undergone a number of important organizational, structural and technological changes over the past few decades; they are a direct consequence of the electricity market liberalization and transition from conventional energy conversion technologies towards renewable resources. These changes represent many advantages as well as challenges for the Distribution System Operator (DSO). The aim of this paper is to review the most important principles, objectives and technical criteria used in planning the development of the electricity distribution network. Presented principles can be used as basic guidelines when developing short-term and long-term plans for the construction and reconstruction of power distribution facilities. This paper also presents a methodological approach to the planning and ranking of proposed electricity facilities with an example from practice that is based on the real planning problem in ED Mostar. The basic conclusion of the paper is that the identification of objectives, criteria and the application of an appropriate and unique methodology is of the utmost importance for formulating the framework of the planning process.","PeriodicalId":236883,"journal":{"name":"B&H Electrical Engineering","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129003142","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}
M. Lukač, Krunomir Petric, Vide Marković, Katarina Mikulić
Abstract Resonant grounding of the medium voltage (MV) network’s neutral point improves the power quality and creates conditions for development of more reliable network. By changing the way of the MV network grounding, conditions for relay protection of single phase fault (earth fault) are changed due to reduced value of zero sequence current during earth fault and demands on the relay protection are increased. Protection system is not able to selectively detect earth fault with high transient resistance and repetitive current earth faults in cable network, so it requires more sensible approach. In case of fault detection, technically more demanding fault indicators must be used. This article will show experiences in detecting earth faults in resonant grounded MV network of Elektra Zagreb.
{"title":"Operational Experience in Determining the Earth Fault on Resonant Grounded Networks","authors":"M. Lukač, Krunomir Petric, Vide Marković, Katarina Mikulić","doi":"10.2478/bhee-2019-0011","DOIUrl":"https://doi.org/10.2478/bhee-2019-0011","url":null,"abstract":"Abstract Resonant grounding of the medium voltage (MV) network’s neutral point improves the power quality and creates conditions for development of more reliable network. By changing the way of the MV network grounding, conditions for relay protection of single phase fault (earth fault) are changed due to reduced value of zero sequence current during earth fault and demands on the relay protection are increased. Protection system is not able to selectively detect earth fault with high transient resistance and repetitive current earth faults in cable network, so it requires more sensible approach. In case of fault detection, technically more demanding fault indicators must be used. This article will show experiences in detecting earth faults in resonant grounded MV network of Elektra Zagreb.","PeriodicalId":236883,"journal":{"name":"B&H Electrical Engineering","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121296559","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}
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