Pub Date : 2019-07-01DOI: 10.1109/ICCEP.2019.8890172
A. Bracale, G. Carpinelli, P. De Falco
Operating distribution networks by the dynamic thermal rating of lines and transformers allows for reaching the operational excellence and for optimizing the power delivery. However, due to the intrinsic uncertainties involved in the dynamic thermal rating estimation, the problem should be framed within a probabilistic environment. This paper focuses on distribution transformers; a novel non-parametric stress-strength model is presented in order to estimate the probability of the stress (i.e., the transformer loading current) to be smaller than the strength (i.e., the dynamic transformer rating). The model is based on a logistic regression of the companion binomial regression problem. Numerical experiments based on actual data collected at an Italian industrial facility are presented to estimate the performances of the stress-strength model.
{"title":"A Predictive Stress-Strength Model Addressing the Dynamic Transformer Rating","authors":"A. Bracale, G. Carpinelli, P. De Falco","doi":"10.1109/ICCEP.2019.8890172","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890172","url":null,"abstract":"Operating distribution networks by the dynamic thermal rating of lines and transformers allows for reaching the operational excellence and for optimizing the power delivery. However, due to the intrinsic uncertainties involved in the dynamic thermal rating estimation, the problem should be framed within a probabilistic environment. This paper focuses on distribution transformers; a novel non-parametric stress-strength model is presented in order to estimate the probability of the stress (i.e., the transformer loading current) to be smaller than the strength (i.e., the dynamic transformer rating). The model is based on a logistic regression of the companion binomial regression problem. Numerical experiments based on actual data collected at an Italian industrial facility are presented to estimate the performances of the stress-strength model.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124193238","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890188
C. Buccella, M. G. Cimoroni, V. Patel, M. Tinari, Carlo Cecati
This paper considers single phase cascaded H-bridges seven level inverters and proposes a pulse amplitude modulation procedure operating at fundamental frequency that mitigates many harmonics from its output voltage waveform, allowing to obtain low total harmonic distortion. The procedure fixes three switching angles and defines the values of the dc source voltages depending on them. Switching angles and total harmonic distortion are constant with modulation index m that can be changed by varying dc voltage sources that depend linearly on m. An investigation about results obtained by different switching angles choices is presented. Comparisons between simulated and experimental results are shown in order to highlight the accuracy of the proposed procedure.
{"title":"Investigation about SHM-PAM procedure for grid connected CHB seven level inverters","authors":"C. Buccella, M. G. Cimoroni, V. Patel, M. Tinari, Carlo Cecati","doi":"10.1109/ICCEP.2019.8890188","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890188","url":null,"abstract":"This paper considers single phase cascaded H-bridges seven level inverters and proposes a pulse amplitude modulation procedure operating at fundamental frequency that mitigates many harmonics from its output voltage waveform, allowing to obtain low total harmonic distortion. The procedure fixes three switching angles and defines the values of the dc source voltages depending on them. Switching angles and total harmonic distortion are constant with modulation index m that can be changed by varying dc voltage sources that depend linearly on m. An investigation about results obtained by different switching angles choices is presented. Comparisons between simulated and experimental results are shown in order to highlight the accuracy of the proposed procedure.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"276 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115123595","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890200
M. Hammami, A. Viatkin, M. Ricco, G. Grandi
An off-board dc fast battery charger for electric vehicles (EVs) with an original control strategy aimed to provide minimum input voltage ripple and zero output current ripple in the typical EV batteries voltage range is presented in this paper. Currently, due to an infant development stage of high-power, high-energy batteries for EV application, there is no clear consensus on allowable output current ripple for fast chargers. However, there are different charging protocols, which are optimized for short charging time and efficiency, while maintaining a long-life cycle of a battery. Common feature of these protocols is an underlying assumption of minimum (or null) instantaneous charging current ripple. The fast charger configuration proposed in this paper is based on a modular three-phase interleaved converter, used as an interface between the dc-link (dc supply) and the battery. The use of low-cost, standard and industry-recognized three-phase power modules for high-power fast EV charging stations enables the reduction of capital and maintenance costs of the charging facilities, enhancing further expansion of the eco-friendly transport. Numerical simulations are carried out in Matlab/Simulink to confirm the feasibility and the effectiveness of the whole EV fast charging configuration, with emphasis to input voltage ripple and output current ripple of the interleaved three-phase dc/dc converter.
{"title":"A DC/DC Fast Charger for Electric Vehicles with Minimum Input/Output Ripple Based on Multiphase Interleaved Converters","authors":"M. Hammami, A. Viatkin, M. Ricco, G. Grandi","doi":"10.1109/ICCEP.2019.8890200","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890200","url":null,"abstract":"An off-board dc fast battery charger for electric vehicles (EVs) with an original control strategy aimed to provide minimum input voltage ripple and zero output current ripple in the typical EV batteries voltage range is presented in this paper. Currently, due to an infant development stage of high-power, high-energy batteries for EV application, there is no clear consensus on allowable output current ripple for fast chargers. However, there are different charging protocols, which are optimized for short charging time and efficiency, while maintaining a long-life cycle of a battery. Common feature of these protocols is an underlying assumption of minimum (or null) instantaneous charging current ripple. The fast charger configuration proposed in this paper is based on a modular three-phase interleaved converter, used as an interface between the dc-link (dc supply) and the battery. The use of low-cost, standard and industry-recognized three-phase power modules for high-power fast EV charging stations enables the reduction of capital and maintenance costs of the charging facilities, enhancing further expansion of the eco-friendly transport. Numerical simulations are carried out in Matlab/Simulink to confirm the feasibility and the effectiveness of the whole EV fast charging configuration, with emphasis to input voltage ripple and output current ripple of the interleaved three-phase dc/dc converter.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115408128","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890102
JunHwi Park, Dong-Hee Lee
This paper presents a hybrid renewable power system using PV(Photovoltaic) and piezoelectric device modules. Although, the PV and piezoelectric device module have different input span and maximum power point curve. But, the basic power converter structure is same. For the parallel connection of multi-source power system, the different MPPT(Maximum Power Point Tracking) curves are selected by the input source in the proposed power system. The outputs of two converters are parallel connected to the battery. The charging current of the battery is determined by the separated MPPT curve and the charging curve according to the charge mode to improve the operating efficiency.In the simulation and experiments, the proposed hybrid renewable power system shows the continuous power supply using an additional battery.
{"title":"Design and Analysis of the Hybrid Power System using PV and Piezoelectric Modules","authors":"JunHwi Park, Dong-Hee Lee","doi":"10.1109/ICCEP.2019.8890102","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890102","url":null,"abstract":"This paper presents a hybrid renewable power system using PV(Photovoltaic) and piezoelectric device modules. Although, the PV and piezoelectric device module have different input span and maximum power point curve. But, the basic power converter structure is same. For the parallel connection of multi-source power system, the different MPPT(Maximum Power Point Tracking) curves are selected by the input source in the proposed power system. The outputs of two converters are parallel connected to the battery. The charging current of the battery is determined by the separated MPPT curve and the charging curve according to the charge mode to improve the operating efficiency.In the simulation and experiments, the proposed hybrid renewable power system shows the continuous power supply using an additional battery.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"558 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123145936","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890170
S. Orcioni, M. Conti
Lithium-ion battery pack performance and longevity can be severely affected by cell-to-cell variations. Statistical modeling is an important tool for optimization of performance and safety of battery packs. In this work a statistical model of Lithium-ion battery cell, based on Polynomial Chaos Expansion is developed. Performance are compare with Monte Carlo simulations.
{"title":"Stochastic model of Lithium-ion Batteries based on Polynomial Chaos Expansion","authors":"S. Orcioni, M. Conti","doi":"10.1109/ICCEP.2019.8890170","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890170","url":null,"abstract":"Lithium-ion battery pack performance and longevity can be severely affected by cell-to-cell variations. Statistical modeling is an important tool for optimization of performance and safety of battery packs. In this work a statistical model of Lithium-ion battery cell, based on Polynomial Chaos Expansion is developed. Performance are compare with Monte Carlo simulations.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128505495","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890151
F. Ciccarelli, L. P. D. Noia, S. Hamasaki, R. Rizzo
The interest in the hybrid electric aircraft propulsion is increasing. Different goals must be guaranteed for a correct performance of an electric propulsion system for aircraft: reliability, low weights, performance in critical conditions. The paper is focused on the thermal analysis of the medium/high frequency core transformers used for the coupling between the battery storage system and the electric motor in electric aircrafts. A multi-physics simulation is carried out to solve the transient thermal problem for the transformer during electrical assisted phase of the aircraft.
{"title":"Thermal Analysis of DAB Converter Core used in Hybrid Aircraft Propulsion System","authors":"F. Ciccarelli, L. P. D. Noia, S. Hamasaki, R. Rizzo","doi":"10.1109/ICCEP.2019.8890151","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890151","url":null,"abstract":"The interest in the hybrid electric aircraft propulsion is increasing. Different goals must be guaranteed for a correct performance of an electric propulsion system for aircraft: reliability, low weights, performance in critical conditions. The paper is focused on the thermal analysis of the medium/high frequency core transformers used for the coupling between the battery storage system and the electric motor in electric aircrafts. A multi-physics simulation is carried out to solve the transient thermal problem for the transformer during electrical assisted phase of the aircraft.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134434585","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890179
M. Hunt, A. Benigni
In a microgrid context, optimal battery sizing is affected by several factors, including load, pricing, and resource availability. In this paper we analyze how these factors affect optimal battery sizing so that in an early design stage an engineer can identify the factors that should be clarified first. We find that changes to the energy profile have linear effects on the optimal battery size but changes to the shape and timing of the load profile have larger nonlinear effects.
{"title":"Sensitivity Analysis of Optimal Battery Sizing to Differences in Microgrid Use","authors":"M. Hunt, A. Benigni","doi":"10.1109/ICCEP.2019.8890179","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890179","url":null,"abstract":"In a microgrid context, optimal battery sizing is affected by several factors, including load, pricing, and resource availability. In this paper we analyze how these factors affect optimal battery sizing so that in an early design stage an engineer can identify the factors that should be clarified first. We find that changes to the energy profile have linear effects on the optimal battery size but changes to the shape and timing of the load profile have larger nonlinear effects.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"8 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113931787","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890205
P. Guerriero, Cesare Attanasio, I. Matacena, S. Daliento
This paper presents the design of a harvesting system suited to power supply electronic equipment hosted in a marine buoy for harbor monitoring purposes. The system exploits both wave motion converters and photovoltaic panels to either charge a back-up battery or directly supply the loads. The system has a double stage topology, the first stage is devoted to the tracking of the maximum power point while the second stage manages the energy flow towards battery and loads. The design is made in the LTspice environment by adopting proper models for the state of charge (SOC) of the battery.
{"title":"Merged Photovoltaic/Wave System for the Power Supply of a Marine Buoy for Harbour Monitoring","authors":"P. Guerriero, Cesare Attanasio, I. Matacena, S. Daliento","doi":"10.1109/ICCEP.2019.8890205","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890205","url":null,"abstract":"This paper presents the design of a harvesting system suited to power supply electronic equipment hosted in a marine buoy for harbor monitoring purposes. The system exploits both wave motion converters and photovoltaic panels to either charge a back-up battery or directly supply the loads. The system has a double stage topology, the first stage is devoted to the tracking of the maximum power point while the second stage manages the energy flow towards battery and loads. The design is made in the LTspice environment by adopting proper models for the state of charge (SOC) of the battery.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123428520","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890168
L. Castro-Santos, A. Filgueira-Vizoso, L. Piegari
The objective of this paper is to calculate the Levelized Cost of Energy (LCOE) and the Internal Rate of Return (IRR) of a floating wave energy farm using Geographic Information Systems (GIS). The methodology has been applied to the Galician coast, located in the North–West of Spain, where the waves potential is really high. In addition, a particular wave energy converter has been considered: the AquaBuOY. The findings are that the methodology can be used to calculate wave energy and internal rates of return at different locations. Investors can determine if a floating wave energy farm is feasible in economic terms analyzing these results.
{"title":"Calculation of the Levelized Cost Of Energy and the Internal Rate of Return using GIS: the case study of a floating wave energy farm","authors":"L. Castro-Santos, A. Filgueira-Vizoso, L. Piegari","doi":"10.1109/ICCEP.2019.8890168","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890168","url":null,"abstract":"The objective of this paper is to calculate the Levelized Cost of Energy (LCOE) and the Internal Rate of Return (IRR) of a floating wave energy farm using Geographic Information Systems (GIS). The methodology has been applied to the Galician coast, located in the North–West of Spain, where the waves potential is really high. In addition, a particular wave energy converter has been considered: the AquaBuOY. The findings are that the methodology can be used to calculate wave energy and internal rates of return at different locations. Investors can determine if a floating wave energy farm is feasible in economic terms analyzing these results.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125077044","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 : 2019-07-01DOI: 10.1109/ICCEP.2019.8890123
B. Gohla-Neudecker, S. Mohr
The described technical system in this paper portrays the amalgamation of two previously separate technical entities: the integration of a DC high power charger (HPC) for recharging battery electric vehicles (BEVs) in a stationary battery energy storage system (BESS). By eliminating the duplicity of multiple components, which stand-alone BESS and HPC share mutually, a new more compact and efficient integrated system can be constructed. Significant advantages are the result: higher battery capacity, smaller space footprint, higher round-trip efficiency, fewer component defects and overall lower CAPEX and OPEX to name the most important. Additionally, the paper explains the methodology surrounding the new innovative system’s most prominent application: peak shaving of load curves or “atypical grid usage” in Germany. The presented exemplary load curve also includes short spikes resulting from BEVs recharging with high power (> 150 kW) in very short periods of time (< 20 min.). The authors hope to provide a better understanding of this new innovative technical system design including its connected monetary savings in a viable business case, helping to contribute to the global energy and mobility transition.
{"title":"Stationary Battery Storage: Presenting a Benchmark System with Integrated DC Charger","authors":"B. Gohla-Neudecker, S. Mohr","doi":"10.1109/ICCEP.2019.8890123","DOIUrl":"https://doi.org/10.1109/ICCEP.2019.8890123","url":null,"abstract":"The described technical system in this paper portrays the amalgamation of two previously separate technical entities: the integration of a DC high power charger (HPC) for recharging battery electric vehicles (BEVs) in a stationary battery energy storage system (BESS). By eliminating the duplicity of multiple components, which stand-alone BESS and HPC share mutually, a new more compact and efficient integrated system can be constructed. Significant advantages are the result: higher battery capacity, smaller space footprint, higher round-trip efficiency, fewer component defects and overall lower CAPEX and OPEX to name the most important. Additionally, the paper explains the methodology surrounding the new innovative system’s most prominent application: peak shaving of load curves or “atypical grid usage” in Germany. The presented exemplary load curve also includes short spikes resulting from BEVs recharging with high power (> 150 kW) in very short periods of time (< 20 min.). The authors hope to provide a better understanding of this new innovative technical system design including its connected monetary savings in a viable business case, helping to contribute to the global energy and mobility transition.","PeriodicalId":277718,"journal":{"name":"2019 International Conference on Clean Electrical Power (ICCEP)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117069408","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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