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Renewable energy & power quality journal最新文献

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A 380 V High Efficiency and High Power Density Switched-Capacitor Power Converter using Wide Band Gap Semiconductors 一种380 V高效率、高功率密度宽禁带半导体开关电容功率变换器
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/REPQJ16.422
L. Fan, A. Knott, I. Jørgensen
{"title":"A 380 V High Efficiency and High Power Density Switched-Capacitor Power Converter using Wide Band Gap Semiconductors","authors":"L. Fan, A. Knott, I. Jørgensen","doi":"10.24084/REPQJ16.422","DOIUrl":"https://doi.org/10.24084/REPQJ16.422","url":null,"abstract":"State-of-the-art switched-capacitor DC-DC power converters mainly focus on low voltage and/or high power applications. However, at high voltage and low power levels, new designs are anticipated to emerge and a power converter that has both high efficiency and high power density is highly desirable. This paper presents such a high voltage low power switched-capacitor DC-DC converter with an input voltage up to 380 V (compatible with rectified European mains) and an output power experimentally validated up to 21.3 W. The wide band gap semiconductor devices of GaN switches and SiC diodes are combined to compose the proposed power stage. Their switching and loss characteristics are analyzed with transient waveforms and thermal images. Different isolated driving circuits are compared and a compact isolated halfbridge driving circuit is proposed. The full-load efficiencies of 98.3% and 97.6% are achieved for the power stage and the complete power converter, without heatsink or airflow. The corresponding power densities are 7.9 W/cm and 2.7 W/cm, based on boxed volumes, respectively.","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85562333","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}
引用次数: 4
EDP Serviço Universal’s energy market performance EDP服务公司的能源市场表现
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/REPQJ16.269
A. Taborda, Sa. Coimbra. Portugal Edp Servico Universal, P. Andrade
{"title":"EDP Serviço Universal’s energy market performance","authors":"A. Taborda, Sa. Coimbra. Portugal Edp Servico Universal, P. Andrade","doi":"10.24084/REPQJ16.269","DOIUrl":"https://doi.org/10.24084/REPQJ16.269","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82969599","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}
引用次数: 0
Modeling of a New Super-Gain BJT and an innovative Low-loss AC Switch based on Gummel-Poon model 基于Gummel-Poon模型的新型超增益BJT和创新型低损耗交流开关建模
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/repqj16.390
Z. Ren, J. Wang, P. Schellmanns, N. Batut, G. Goubard
{"title":"Modeling of a New Super-Gain BJT and an innovative Low-loss AC Switch based on Gummel-Poon model","authors":"Z. Ren, J. Wang, P. Schellmanns, N. Batut, G. Goubard","doi":"10.24084/repqj16.390","DOIUrl":"https://doi.org/10.24084/repqj16.390","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83594498","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}
引用次数: 0
Potential benefits of distributed generation in the reduction of non-technical losses 分布式发电在减少非技术损失方面的潜在好处
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/repqj16.208
Eduardo Baffi, Comptroller-General Brasília. Brazil, Rafael Martin Lamaison Urioste, M. Peñalba
{"title":"Potential benefits of distributed generation in the reduction of non-technical losses","authors":"Eduardo Baffi, Comptroller-General Brasília. Brazil, Rafael Martin Lamaison Urioste, M. Peñalba","doi":"10.24084/repqj16.208","DOIUrl":"https://doi.org/10.24084/repqj16.208","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91518518","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}
引用次数: 1
Voltage Sourced Converter (VSC) based on multiple FACTS controllers for the improvement of power quality 基于多个FACTS控制器的电压源变换器(VSC)用于改善电能质量
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/REPQJ16.213
S. A. Mohamed, N. Luo, T. Pujol, L. Pacheco
{"title":"Voltage Sourced Converter (VSC) based on multiple FACTS controllers for the improvement of power quality","authors":"S. A. Mohamed, N. Luo, T. Pujol, L. Pacheco","doi":"10.24084/REPQJ16.213","DOIUrl":"https://doi.org/10.24084/REPQJ16.213","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91524225","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}
引用次数: 7
Measurement of the Current-Voltage Curve of Photovoltaic Cells Based on a DAQ and Python 基于DAQ和Python的光伏电池电流-电压曲线测量
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/REPQJ16.223
I. Reyes-Ramírez, Unidad Profesional Interdisciplinaria en Ingeniería y Tec México, J. Fonseca-Campos, J. L. M. Machuca
{"title":"Measurement of the Current-Voltage Curve of Photovoltaic Cells Based on a DAQ and Python","authors":"I. Reyes-Ramírez, Unidad Profesional Interdisciplinaria en Ingeniería y Tec México, J. Fonseca-Campos, J. L. M. Machuca","doi":"10.24084/REPQJ16.223","DOIUrl":"https://doi.org/10.24084/REPQJ16.223","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75431001","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}
引用次数: 0
DC Switchyard Configurations for the Integration of Distributed Energy Resources 分布式能源集成的直流开关站配置
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/repqj16.395
A. Hermosilla, D. M. Larruskain, P. Eguía
{"title":"DC Switchyard Configurations for the Integration of Distributed Energy Resources","authors":"A. Hermosilla, D. M. Larruskain, P. Eguía","doi":"10.24084/repqj16.395","DOIUrl":"https://doi.org/10.24084/repqj16.395","url":null,"abstract":"HVDC supergrid must grow in an organized way. The objective of HVDC substations will be to integrate generation groups and occasionally connect them to the AC network. That way, all substations will not be identical and their relevance will not be the same. In AC substations, network topological changes are made to limit the short circuit current contributions, perform load distributions and allow maintenance work when the application of restrictions is necessary, without compromising generation. These maintenance tasks should allow the exploitation of the network without making concessions on the stability of the system. DC networks do not require topological changes in the network to distribute loads, its utility would be reduced to facilitate maintenance tasks and minimize the possible effects of faults. However, it must be discussed which is the most suitable switchyard or whether more than one switchyard are required such as in AC networks. In the paper the usual topologies and switchyard configurations are analyzed and compared to determine if the architectures inherited from the AC grids can be used in the future HVDC supergrid. Several DC switchyard configurations are also discussed. Finally, the most suitable configurations are compared and applied to a study case.","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75588237","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}
引用次数: 0
Solar Energy Potential and Time of Use Tariffs: a study case for Sao Luiz do Paraitinga 太阳能潜力和使用时间关税:圣路易斯市Paraitinga的研究案例
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/repqj16.432
Gheisa R. T. Esteves, M. Cunha, Wesley de C. Fagundes, R. Souza, A. D. Silva
{"title":"Solar Energy Potential and Time of Use Tariffs: a study case for Sao Luiz do Paraitinga","authors":"Gheisa R. T. Esteves, M. Cunha, Wesley de C. Fagundes, R. Souza, A. D. Silva","doi":"10.24084/repqj16.432","DOIUrl":"https://doi.org/10.24084/repqj16.432","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75068377","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}
引用次数: 0
Characterization of the effect of pyrolysis in torrefied wood chips 热解对碳化木屑影响的表征
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/REPQJ16.371
L. Nunes, R. Godina, J. Matias, J. Catalão
{"title":"Characterization of the effect of pyrolysis in torrefied wood chips","authors":"L. Nunes, R. Godina, J. Matias, J. Catalão","doi":"10.24084/REPQJ16.371","DOIUrl":"https://doi.org/10.24084/REPQJ16.371","url":null,"abstract":"The pyrolysis behavior of torrefied wood produced in Portugal was investigated. Torrefaction is the thermochemical upgrading of biomass at approximately 300oC in an atmosphere free of oxidizing agents to increase fuel density and to improve fuel quality, decreasing moisture and increasing heating value. Torrefied woodchips were pyrolysed at pressurized conditions in an inert atmosphere at 600oC. All the condensable liquids were sampled for analyses. All pyrolysis hydrocarbon liquids were analysed using simulated distillation (simdis) and gas chromatography mass spectrometry (GCMS). Torrefied wood hydrocarbon liquid showed higher concentrations of aliphatic aldehydes liquid. A decrease in all the other molecular components was observed for the torrefied wood hydrocarbon liquid. The main organic components in the torrefied wood pyrolysis water fractions were acids, alcohols and aliphatic oxygenates. Torrefied wood pyrolysis water exhibited a significantly lower acid concentration when compared to nontorrefied wood pyrolysis water. The biomass chars (prepared at 600oC) were analysed using proximate analyses and carbon dioxide char reactivity. Proximate analyses showed that volatile matter was still present in the torrefied wood, but was almost completely devolatilized after pyrolysis.","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76273266","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}
引用次数: 1
Proposal to Evaluate the Potential of Biogas and Lifetime of Landfills for the Production of Electrical Energy 评估沼气在堆填区产生电能的潜力及寿命的建议
Renewable energy & power quality journal Pub Date : 2018-04-01 DOI: 10.24084/repqj16.201
M. N. Goncalves, Matheus Ribeiro Martins, J. Camacho
{"title":"Proposal to Evaluate the Potential of Biogas and Lifetime of Landfills for the Production of Electrical Energy","authors":"M. N. Goncalves, Matheus Ribeiro Martins, J. Camacho","doi":"10.24084/repqj16.201","DOIUrl":"https://doi.org/10.24084/repqj16.201","url":null,"abstract":"","PeriodicalId":21007,"journal":{"name":"Renewable energy & power quality journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79785514","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}
引用次数: 1
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