Pub Date : 2017-10-01DOI: 10.1109/INTLEC.2017.8214205
Kosuke Sato, Toshiro Sato, M. Sonehara
This paper describes transient response improvement of digitally controlled synchronous rectification buck-type dc-dc converter using feedforward compensation. Transfer function of the feedforward element was introduced by the state space equation. The steady state characteristics of the converter using the feedforward element were same as the converter without using the element, but transient responses for output current change and input voltage change were significantly improved.
{"title":"Transient response improvement of digitally controlled DC-DC converter with feedforward compensation","authors":"Kosuke Sato, Toshiro Sato, M. Sonehara","doi":"10.1109/INTLEC.2017.8214205","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214205","url":null,"abstract":"This paper describes transient response improvement of digitally controlled synchronous rectification buck-type dc-dc converter using feedforward compensation. Transfer function of the feedforward element was introduced by the state space equation. The steady state characteristics of the converter using the feedforward element were same as the converter without using the element, but transient responses for output current change and input voltage change were significantly improved.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124227827","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214183
P. Prabhu, Javad Khodabakhsh, Mona Abo El Dahb, G. Moschopoulos
High gain DC-DC converters have become increasingly popular in recent years as there is greater need to interface low voltage DC sources such as solar cells and batteries with much higher voltage DC buses. A new high gain DC-DC converter with high gain, galvanic isolation and an integrated passive snubber network is proposed in the paper. In the paper, the general operation of the converter is discussed, its modes of operation are explained and its features are reviewed. The design of the converter is discussed and a set of general guidelines that can be used in the design are presented. The feasibility of the converter is confirmed with experimental results obtained from a prototype converter.
{"title":"A High Gain DC-DC Full-Bridge Converter With Integrated Passive Snubber Network","authors":"P. Prabhu, Javad Khodabakhsh, Mona Abo El Dahb, G. Moschopoulos","doi":"10.1109/INTLEC.2017.8214183","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214183","url":null,"abstract":"High gain DC-DC converters have become increasingly popular in recent years as there is greater need to interface low voltage DC sources such as solar cells and batteries with much higher voltage DC buses. A new high gain DC-DC converter with high gain, galvanic isolation and an integrated passive snubber network is proposed in the paper. In the paper, the general operation of the converter is discussed, its modes of operation are explained and its features are reviewed. The design of the converter is discussed and a set of general guidelines that can be used in the design are presented. The feasibility of the converter is confirmed with experimental results obtained from a prototype converter.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"495 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124437929","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214132
Andrew J. Dickson, V. Gonçalves, P. D. de Beer
Remote line power is rapidly becoming an acceptable alternative to local power as a means of powering Fiber-to-the-Home (FTTH), DSLAMs, G.fast, and Small Cells. This paper gives examples of existing and emerging applications for remote line powering and describes the development and consolidation of standards that support it. The RFT-V standard, predominantly a North American standard, is now being considered in locations throughout the world because of its inherent power transmission advantages when compared to the well-established RFT-C standard. This paper describes the content of the newly released ATIS standard and discusses the potential for the upcoming IEC 62368-3 standard. The paper concludes that RFT-V power architecture is safe, and that the inherent power transmission advantages will drive RFT-V to power the next generation of distributed telecommunication equipment. The consolidation towards a primary standard, is expected to ensure cost containment and a steady pipeline of product innovations that can help drive the remote line powering of emerging technologies such as 5G, small cells and G.fast.
{"title":"Remote line powering networks — Emerging applications and standards for RFT-V","authors":"Andrew J. Dickson, V. Gonçalves, P. D. de Beer","doi":"10.1109/INTLEC.2017.8214132","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214132","url":null,"abstract":"Remote line power is rapidly becoming an acceptable alternative to local power as a means of powering Fiber-to-the-Home (FTTH), DSLAMs, G.fast, and Small Cells. This paper gives examples of existing and emerging applications for remote line powering and describes the development and consolidation of standards that support it. The RFT-V standard, predominantly a North American standard, is now being considered in locations throughout the world because of its inherent power transmission advantages when compared to the well-established RFT-C standard. This paper describes the content of the newly released ATIS standard and discusses the potential for the upcoming IEC 62368-3 standard. The paper concludes that RFT-V power architecture is safe, and that the inherent power transmission advantages will drive RFT-V to power the next generation of distributed telecommunication equipment. The consolidation towards a primary standard, is expected to ensure cost containment and a steady pipeline of product innovations that can help drive the remote line powering of emerging technologies such as 5G, small cells and G.fast.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121591627","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214207
M. Caruso, R. Miceli, P. Livreri, F. Raimondi, P. Romano, F. Viola, M. Martino, M. Pastorelli
This article aims to establish the economic contribution of a photovoltaic system placed on a façade of a building, replacing traditional elements such as windows and glass-cement walls with active elements. The aim is to compare the behavior of next-generation systems, which favor architectonical integration, with traditional ones. Two novel systems have been taken into account: a dye sensitized solar cell (DSSC) and blue and grey thin film silicon panels. Different generation systems have been tested and compared in terms of efficiency and fill factor.
{"title":"Photovoltaic facade: Comparison of actual technologies","authors":"M. Caruso, R. Miceli, P. Livreri, F. Raimondi, P. Romano, F. Viola, M. Martino, M. Pastorelli","doi":"10.1109/INTLEC.2017.8214207","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214207","url":null,"abstract":"This article aims to establish the economic contribution of a photovoltaic system placed on a façade of a building, replacing traditional elements such as windows and glass-cement walls with active elements. The aim is to compare the behavior of next-generation systems, which favor architectonical integration, with traditional ones. Two novel systems have been taken into account: a dye sensitized solar cell (DSSC) and blue and grey thin film silicon panels. Different generation systems have been tested and compared in terms of efficiency and fill factor.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131467444","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214148
T. Mannari, T. Hikihara
Power storage systems are expected to contribute the stable power distribution under disturbances in power systems. Recently, power quality such as momentum voltage sag is a critical issue for power systems. For maintaining power quality, battery is inevitable and expected to quickly respond to the disturbances in the power systems. Redox Flow Battery (RFB) is one of the batteries which is capable to compensate the disturbance rapidly. The response of RFB is governed by the chemical, fluid and electrical dynamics with multiple time scales. The fast dynamics of external circuit has been neglected in the discussion of modeling. In this paper, we discuss the limitation of the transient behavior based on the phase space analysis with a previously proposed model. Here is, in particular, focused on the discussion of the parameters related to the flow of the electrolysis solution. As a result, it is clarified that the transient behavior is forcedly bound by the external electrical circuit at the load change, and the flow of the electrolysis solution pushed the increase of the consumption of ions down.
{"title":"A restricting condition on transient behavior of redox flow battery in phase space","authors":"T. Mannari, T. Hikihara","doi":"10.1109/INTLEC.2017.8214148","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214148","url":null,"abstract":"Power storage systems are expected to contribute the stable power distribution under disturbances in power systems. Recently, power quality such as momentum voltage sag is a critical issue for power systems. For maintaining power quality, battery is inevitable and expected to quickly respond to the disturbances in the power systems. Redox Flow Battery (RFB) is one of the batteries which is capable to compensate the disturbance rapidly. The response of RFB is governed by the chemical, fluid and electrical dynamics with multiple time scales. The fast dynamics of external circuit has been neglected in the discussion of modeling. In this paper, we discuss the limitation of the transient behavior based on the phase space analysis with a previously proposed model. Here is, in particular, focused on the discussion of the parameters related to the flow of the electrolysis solution. As a result, it is clarified that the transient behavior is forcedly bound by the external electrical circuit at the load change, and the flow of the electrolysis solution pushed the increase of the consumption of ions down.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"2020 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133558544","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214153
J. Frankhouser
Energy storage systems have supported the Telecom, Utility, and Data Center markets for nearly 100 years. This paper will review the traditional storage systems and technologies by using matrices which characterize the product solutions benefits and weaknesses. Other critical characteristics such as energy density, floor loading, will be compared and contrasted. Examples of new system architectures will be reviewed and assessed for benefits and shortcomings including a TCO model.
{"title":"Cutting edge central office energy storage solutions","authors":"J. Frankhouser","doi":"10.1109/INTLEC.2017.8214153","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214153","url":null,"abstract":"Energy storage systems have supported the Telecom, Utility, and Data Center markets for nearly 100 years. This paper will review the traditional storage systems and technologies by using matrices which characterize the product solutions benefits and weaknesses. Other critical characteristics such as energy density, floor loading, will be compared and contrasted. Examples of new system architectures will be reviewed and assessed for benefits and shortcomings including a TCO model.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129325778","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214122
Hiroki Hayasaka, Kaisei Kanetani, Sohei Nakashima, M. Yamazaki, T. Babasaki, Risshi Kondo, Masami Amano
In this paper, we report on a method of finding lot defects and the results of a verification related to the maintenance of power-supply and air-conditioning equipment for ICT. We built a logic and models to automatically detect equipment that may be included in a defective lot. An equipment anomaly analysis system was constructed. For verification, actual past lot failure equipment was applied to the logic and models for comparison with the conventional method. As a result, detection of lot defects became faster in 3 out of 4 cases. Lot defects were generally detected at an early stage. In addition, the result of operating the equipment anomaly analysis system is described.
{"title":"Method for detection of lot defects for maintenance of ICT power supplies and air conditioning equipment and verification results","authors":"Hiroki Hayasaka, Kaisei Kanetani, Sohei Nakashima, M. Yamazaki, T. Babasaki, Risshi Kondo, Masami Amano","doi":"10.1109/INTLEC.2017.8214122","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214122","url":null,"abstract":"In this paper, we report on a method of finding lot defects and the results of a verification related to the maintenance of power-supply and air-conditioning equipment for ICT. We built a logic and models to automatically detect equipment that may be included in a defective lot. An equipment anomaly analysis system was constructed. For verification, actual past lot failure equipment was applied to the logic and models for comparison with the conventional method. As a result, detection of lot defects became faster in 3 out of 4 cases. Lot defects were generally detected at an early stage. In addition, the result of operating the equipment anomaly analysis system is described.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123918050","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214189
Shiu Mochiyama, T. Hikihara, R. Takahashi
Toward flexible and efficient management of dispersed power sources, a power packet dispatchig system was proposed. In the system, electric power is divided into pulses and transferred with information tags attached in voltage waveforms. In this paper, we discuss close-loop control of a manipulator fed by power packets. Through numerical simulations, it is verified that an intermittent supply of power packets can meet a dynamically changing power demand of the joint motors. The results imply that the proposed system can replace the conventional power supply with the integrated transfer of power and related information.
{"title":"A study on close-loop control of manipulator by power packet density modulation","authors":"Shiu Mochiyama, T. Hikihara, R. Takahashi","doi":"10.1109/INTLEC.2017.8214189","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214189","url":null,"abstract":"Toward flexible and efficient management of dispersed power sources, a power packet dispatchig system was proposed. In the system, electric power is divided into pulses and transferred with information tags attached in voltage waveforms. In this paper, we discuss close-loop control of a manipulator fed by power packets. Through numerical simulations, it is verified that an intermittent supply of power packets can meet a dynamically changing power demand of the joint motors. The results imply that the proposed system can replace the conventional power supply with the integrated transfer of power and related information.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129992728","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214161
Y. Yonezawa, H. Nakao, Y. Nakashima, A. Vithanage, Tomohiro Kanehira, Yasunori Ueno
We developed a high-current-density, point-of-load (POL) converter for high performance Field Programmable Gate Array (FPGA) used in telecommunications systems. We applied the model-based development (MBD) method to realize the high-current density converter. Model in the loop simulation (MILS) was applied for precise loss analysis of the converter. The rapid control prototyping process (RCP) was applied for the real circuit test. The development period was shortened to less than one third of that of conventional processes. To the best of our knowledge, this is the first practical example of MBD application for POL converter development. In this report, we explain how to apply the MBD method of a power supply design.
{"title":"Model-based development of high-current-density point-of-load converter of high performance FPGA for telecommunication application","authors":"Y. Yonezawa, H. Nakao, Y. Nakashima, A. Vithanage, Tomohiro Kanehira, Yasunori Ueno","doi":"10.1109/INTLEC.2017.8214161","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214161","url":null,"abstract":"We developed a high-current-density, point-of-load (POL) converter for high performance Field Programmable Gate Array (FPGA) used in telecommunications systems. We applied the model-based development (MBD) method to realize the high-current density converter. Model in the loop simulation (MILS) was applied for precise loss analysis of the converter. The rapid control prototyping process (RCP) was applied for the real circuit test. The development period was shortened to less than one third of that of conventional processes. To the best of our knowledge, this is the first practical example of MBD application for POL converter development. In this report, we explain how to apply the MBD method of a power supply design.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130043048","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 : 2017-10-01DOI: 10.1109/INTLEC.2017.8214197
Min-Kwon Yang, W. Choi
This paper proposes a high-efficiency voltage sag protector with low ground leakage current. The line-frequency transformer of the conventional system is replaced by a bidirectional dc-dc converter. A bidirectional dc-ac inverter copes with voltage sag and interruption. It has low ground leakage currents by the common grounded capacitors. A bidirectional dc-dc converter transfers the electrical power between the battery and the bidirectional dc-ac inverter. The proposed system improves the power efficiency and power density compared to the conventional system. Experimental results for a 1.0 kW prototype system are presented to evaluate the performance of the proposed system.
{"title":"High-efficiency voltage sag protector with low ground leakage current","authors":"Min-Kwon Yang, W. Choi","doi":"10.1109/INTLEC.2017.8214197","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214197","url":null,"abstract":"This paper proposes a high-efficiency voltage sag protector with low ground leakage current. The line-frequency transformer of the conventional system is replaced by a bidirectional dc-dc converter. A bidirectional dc-ac inverter copes with voltage sag and interruption. It has low ground leakage currents by the common grounded capacitors. A bidirectional dc-dc converter transfers the electrical power between the battery and the bidirectional dc-ac inverter. The proposed system improves the power efficiency and power density compared to the conventional system. Experimental results for a 1.0 kW prototype system are presented to evaluate the performance of the proposed system.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120953237","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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