This paper has put forward a breakthrough design method for 5G power lighting and thermal. In order to improve the outdoor lightning protection ability, this paper presents a simplified compact lightning protection circuit, whose lightning protection ability can reach 20KA. It also advises to add an ORing MOSFET at the output end of power system, to solve the problem of the limit-exceeding of the synchronous rectifier electric stress when the lightning current flows backward. To make the product work under a wider temperature range and with higher reliability, this paper proposes a new thermal design, in which the power shells are designed as radiation fins, thus the MOSFETs that generate heat are installed directly on the shell, then the 5G power system could be small sized and light weight, and be more convenient to install and maintain.
{"title":"Key technology research on 5G mobile communications power system","authors":"Pengchao Wang, Mingming Liu, Zhirong Cheng, Yundong Yang, Shaomin Zhang","doi":"10.1109/INTLEC.2017.8214126","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214126","url":null,"abstract":"This paper has put forward a breakthrough design method for 5G power lighting and thermal. In order to improve the outdoor lightning protection ability, this paper presents a simplified compact lightning protection circuit, whose lightning protection ability can reach 20KA. It also advises to add an ORing MOSFET at the output end of power system, to solve the problem of the limit-exceeding of the synchronous rectifier electric stress when the lightning current flows backward. To make the product work under a wider temperature range and with higher reliability, this paper proposes a new thermal design, in which the power shells are designed as radiation fins, thus the MOSFETs that generate heat are installed directly on the shell, then the 5G power system could be small sized and light weight, and be more convenient to install and maintain.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"33 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":"128286296","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.2017.8214141
G. Mutani, F. Pascali, M. Martino, G. Nuvoli
The energetic behaviour of ten nZEB built in Piemonte (region located in NW Italy) is analysed from experimental data. The energy consumptions are normalized for the weather conditions and size of the building, then the consumptions are compared with the design data. The data analysis shows that nZEB can be built in northern part of Italy and even if the real consumptions are slightly higher than the values expected from design. Low energy demand can be achieved and good percentage of renewable energy sources can be utilized, but some improvements may be done to exploit more renewable energy sources with storage systems and with restrictive legislation.
{"title":"Nearly zero energy buildings: Analysis on monitoring energy consumptions for residential buildings in piedmont region (it)","authors":"G. Mutani, F. Pascali, M. Martino, G. Nuvoli","doi":"10.1109/INTLEC.2017.8214141","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214141","url":null,"abstract":"The energetic behaviour of ten nZEB built in Piemonte (region located in NW Italy) is analysed from experimental data. The energy consumptions are normalized for the weather conditions and size of the building, then the consumptions are compared with the design data. The data analysis shows that nZEB can be built in northern part of Italy and even if the real consumptions are slightly higher than the values expected from design. Low energy demand can be achieved and good percentage of renewable energy sources can be utilized, but some improvements may be done to exploit more renewable energy sources with storage systems and with restrictive legislation.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"27 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":"127066261","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.2017.8211673
Xiyu Liu, Da-Chun Teng, Diankui Wang, Qingfeng Zhu, Zhenghai Liu
Eco mode UPS will power the load with mains power supply directly when the quality of mains power supply is good. When the quality of mains power supply decreases Eco mode UPS will switch to double conversion mode rapidly to meet the requirement of power quality. Eco mode UPS has the highest efficiency and the highest reliability. Using Eco mode UPS is an important measure of data center energy saving, which can improve the Power Usage Effectiveness (PUE) of data center. This paper evaluates the performance of Eco mode UPS, analyzes the high efficiency and high reliability of Eco mode UPS, and describes the application consideration of Eco mode UPS.
{"title":"Application of eco Mode UPS in data center","authors":"Xiyu Liu, Da-Chun Teng, Diankui Wang, Qingfeng Zhu, Zhenghai Liu","doi":"10.1109/INTLEC.2017.8211673","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8211673","url":null,"abstract":"Eco mode UPS will power the load with mains power supply directly when the quality of mains power supply is good. When the quality of mains power supply decreases Eco mode UPS will switch to double conversion mode rapidly to meet the requirement of power quality. Eco mode UPS has the highest efficiency and the highest reliability. Using Eco mode UPS is an important measure of data center energy saving, which can improve the Power Usage Effectiveness (PUE) of data center. This paper evaluates the performance of Eco mode UPS, analyzes the high efficiency and high reliability of Eco mode UPS, and describes the application consideration of Eco mode UPS.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"31 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":"117169221","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.2017.8214192
K. Hirayama, T. Suetsugu, F. Kurokawa
This paper presents dc-dc converter based on voltage dividing class E amplifier. Class E2 dc-dc converter, which is one of the converter suitable for high operating frequency is studied. Class E2 dc-dc converter composed of a Class E amplifier and Class E rectifier. the amplifier side and rectifier side of class E2 dc-dc converter can achieve ZVS and ZDS. However, it is indicated that peak switch voltage reaches approximately 3.5 times of the dc supply voltage in the amplifier side of this converter. For that reason, it leads to the increase of cost and loss because a high-voltage switching device is necessary. This paper presents a circuit dividing the switch voltage by connecting transistors of the amplifier side of class E2 dc-dc converter. Therefore, the proposed circuit can divide peak switch depending on the connected number of transistors voltage by connecting transistors in series.
{"title":"DC-DC converter based on voltage dividing class e amplifier","authors":"K. Hirayama, T. Suetsugu, F. Kurokawa","doi":"10.1109/INTLEC.2017.8214192","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214192","url":null,"abstract":"This paper presents dc-dc converter based on voltage dividing class E amplifier. Class E2 dc-dc converter, which is one of the converter suitable for high operating frequency is studied. Class E2 dc-dc converter composed of a Class E amplifier and Class E rectifier. the amplifier side and rectifier side of class E2 dc-dc converter can achieve ZVS and ZDS. However, it is indicated that peak switch voltage reaches approximately 3.5 times of the dc supply voltage in the amplifier side of this converter. For that reason, it leads to the increase of cost and loss because a high-voltage switching device is necessary. This paper presents a circuit dividing the switch voltage by connecting transistors of the amplifier side of class E2 dc-dc converter. Therefore, the proposed circuit can divide peak switch depending on the connected number of transistors voltage by connecting transistors in series.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"60 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":"117054278","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.2017.8214186
S. Kimura, K. Nanamori, M. Noah, Masayoshi Yamamoto
DC-DC converters in electric vehicle (EVs) and hybrid electric vehicles (HEVs) have required higher power density and high efficiency. This paper proposes a novel LLC resonant DC-DC converter with integrated transformer. This circuit is composed of three LLC converter cells which are connected in series on the primary side and in parallel on the secondary side with interleaved control scheme. The Series Input Parallel Output (SIPO) structure enables the converter cells to share the input voltage and output current. The interleaved operation diminishes the ripple current of the output capacitor, and can reduce the size of the output capacitor. Also a reduction effect of the transformers is obtained by using the integrated transformer which independent transformers are combined into a single core. All these features make the proposed converter suitable for especially high input voltage and high output current applications to realize higher power and higher efficiency. The steady state operating principle of the converter was demonstrated. The theoretical analysis, the equivalent model and voltage gain of the converter are presented based on fundamental harmonic analysis of the converter. A prototype with 330V input and 500W output was built-up to validate the theoretical analysis.
{"title":"A novel llc resonant dc-dc converter with integrated transformer","authors":"S. Kimura, K. Nanamori, M. Noah, Masayoshi Yamamoto","doi":"10.1109/INTLEC.2017.8214186","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214186","url":null,"abstract":"DC-DC converters in electric vehicle (EVs) and hybrid electric vehicles (HEVs) have required higher power density and high efficiency. This paper proposes a novel LLC resonant DC-DC converter with integrated transformer. This circuit is composed of three LLC converter cells which are connected in series on the primary side and in parallel on the secondary side with interleaved control scheme. The Series Input Parallel Output (SIPO) structure enables the converter cells to share the input voltage and output current. The interleaved operation diminishes the ripple current of the output capacitor, and can reduce the size of the output capacitor. Also a reduction effect of the transformers is obtained by using the integrated transformer which independent transformers are combined into a single core. All these features make the proposed converter suitable for especially high input voltage and high output current applications to realize higher power and higher efficiency. The steady state operating principle of the converter was demonstrated. The theoretical analysis, the equivalent model and voltage gain of the converter are presented based on fundamental harmonic analysis of the converter. A prototype with 330V input and 500W output was built-up to validate the theoretical analysis.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"31 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":"128020235","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.2017.8214133
Yoshiteru Yoshida, Toshihiro Hayashi, Hirotaka Kusabe, T. Kyunai, K. Usui, H. Yajima, K. Hirose, T. Aoki, D. Stanzione
Power consumption of ICT facilities and data centers has grown, and this has led to a need to improve energy efficiency of these facilities. DC power distribution systems employing 380VDC as the supply voltage is one promising approach to address this problem for countries around the world developing and deploying commercial services. We demonstrated a 380VDC power distribution system interconnected with a solar power generation system in Texas, USA. The purpose of this demonstration was to show that a 380VDC power supply system saves more energy than an AC power supply system, and to show how much carbon dioxide emissions can be reduced by integrating a solar power generation system. This demonstration resulted in an approximate 17% energy reduction compared with an AC power supply system having the same level of reliability. Also, an evaluation using Data center Performance Per Energy (DPPE) as a performance index of the efficiency of data centers was carried out. The results showed that Power Usage Effectiveness (PUE), one of the sub-metrics of DPPE, improved with the 380VDC power supply system compared with the AC power supply system.
{"title":"Energy-saving effects by using 380vdc power supply system interconnected with a solar power generation system in texas","authors":"Yoshiteru Yoshida, Toshihiro Hayashi, Hirotaka Kusabe, T. Kyunai, K. Usui, H. Yajima, K. Hirose, T. Aoki, D. Stanzione","doi":"10.1109/INTLEC.2017.8214133","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214133","url":null,"abstract":"Power consumption of ICT facilities and data centers has grown, and this has led to a need to improve energy efficiency of these facilities. DC power distribution systems employing 380VDC as the supply voltage is one promising approach to address this problem for countries around the world developing and deploying commercial services. We demonstrated a 380VDC power distribution system interconnected with a solar power generation system in Texas, USA. The purpose of this demonstration was to show that a 380VDC power supply system saves more energy than an AC power supply system, and to show how much carbon dioxide emissions can be reduced by integrating a solar power generation system. This demonstration resulted in an approximate 17% energy reduction compared with an AC power supply system having the same level of reliability. Also, an evaluation using Data center Performance Per Energy (DPPE) as a performance index of the efficiency of data centers was carried out. The results showed that Power Usage Effectiveness (PUE), one of the sub-metrics of DPPE, improved with the 380VDC power supply system compared with the AC power supply system.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"49 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":"129183510","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.2017.8214155
Jeanette Muenderlein, M. Steinhoff, Hendrik Axelsen, D. Sauer
Pushed through an increasing amount of renewable energy sources in the German grid, the fluctuation in energy generation rises. Therefore, a balancing system which takes the grid stabilizing role is necessary. Depending on the time periods of the chosen sales channels, different storage systems can be used. For short and middle time spans an electrochemical system like a battery energy storage system (BESS) can be integrated into the grid. In order to investigate in which way a BESS can operate economically and which services can be offered for grid stabilization, a 5.8 MW and 5.6 MWh battery energy storage system (BESS) was designed and built. Within this contribution, the setup will be explained. Moreover, the efficiency and the power forecast data will be analyzed and verified.
{"title":"Planning, building, efficiency measurement and determination of forecast data of a grid-scale hybrid 5 MW / 5 MWh battery storage system","authors":"Jeanette Muenderlein, M. Steinhoff, Hendrik Axelsen, D. Sauer","doi":"10.1109/INTLEC.2017.8214155","DOIUrl":"https://doi.org/10.1109/INTLEC.2017.8214155","url":null,"abstract":"Pushed through an increasing amount of renewable energy sources in the German grid, the fluctuation in energy generation rises. Therefore, a balancing system which takes the grid stabilizing role is necessary. Depending on the time periods of the chosen sales channels, different storage systems can be used. For short and middle time spans an electrochemical system like a battery energy storage system (BESS) can be integrated into the grid. In order to investigate in which way a BESS can operate economically and which services can be offered for grid stabilization, a 5.8 MW and 5.6 MWh battery energy storage system (BESS) was designed and built. Within this contribution, the setup will be explained. Moreover, the efficiency and the power forecast data will be analyzed and verified.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"31 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":"114968394","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 : 2017-06-01DOI: 10.1109/ICDCM.2017.8001043
K. Yukita, T. Hosoe, K. Hirose, M. Noritake
In recent years, energy-saving measures in the household electrical appliances is progressing. Further, with the development of power electronics field, digital household electrical appliances that operate at DC power source is beginning to increase. In this paper, basic system action testing of a system was put into effect. An air-conditioning equipment was used for system action testing. As a result, the cooperativeness of DC power supply system and AC power supply system were confirmed.
{"title":"Air conditioning equipment using dc power supply system","authors":"K. Yukita, T. Hosoe, K. Hirose, M. Noritake","doi":"10.1109/ICDCM.2017.8001043","DOIUrl":"https://doi.org/10.1109/ICDCM.2017.8001043","url":null,"abstract":"In recent years, energy-saving measures in the household electrical appliances is progressing. Further, with the development of power electronics field, digital household electrical appliances that operate at DC power source is beginning to increase. In this paper, basic system action testing of a system was put into effect. An air-conditioning equipment was used for system action testing. As a result, the cooperativeness of DC power supply system and AC power supply system were confirmed.","PeriodicalId":366207,"journal":{"name":"2017 IEEE International Telecommunications Energy Conference (INTELEC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122434900","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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