Pub Date : 2018-12-01DOI: 10.1109/SPEC.2018.8635837
Hongda Wu, Jinjun Liu, Shaodi Ouyang
Space vector modulation (SVM) is widely used in traditional three-phase converters, but when extended to multilevel converters it suffers from issues of heavy computation cost and intense memory usage. Researchers have proposed many simplified SVM algorithms, but they are still impractical in some respects. This paper examines a simplified SVM algorithm based on H-D coordinates, which has simpler calculations than simplified algorithms based on other coordinate systems. Then, this paper analyzes this simplified algorithm and finds it has an inherent three-phase unbalance problem. There are two reasons for the unbalance: the unbalance of generation rules and the directionality of H-D coordinates. Then, based on the feature of HD coordinates, we propose an improved SVM algorithm. The proposed algorithm divides the hexagonal vector space diagram into three diamond-shaped areas equally and can take full advantage of the similarities among them. Consequently, the unbalance problem is solved and the calculations are still compact. In addition, the proposed algorithm has another two features: simplified calculation in a condition of overmodulation and better balance performance when switching frequency equals a multiple of 150 Hz. Based on our findings, we believe the proposed SVM algorithm is more practical than others and is suitable for large level-number applications like three-phase modular multilevel converters. Simulations in various operating conditions are done.
{"title":"An Improvement on A Simplified Space Vector Modulation Algorithm to Solve the Inherent Three-Phase Unbalance","authors":"Hongda Wu, Jinjun Liu, Shaodi Ouyang","doi":"10.1109/SPEC.2018.8635837","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635837","url":null,"abstract":"Space vector modulation (SVM) is widely used in traditional three-phase converters, but when extended to multilevel converters it suffers from issues of heavy computation cost and intense memory usage. Researchers have proposed many simplified SVM algorithms, but they are still impractical in some respects. This paper examines a simplified SVM algorithm based on H-D coordinates, which has simpler calculations than simplified algorithms based on other coordinate systems. Then, this paper analyzes this simplified algorithm and finds it has an inherent three-phase unbalance problem. There are two reasons for the unbalance: the unbalance of generation rules and the directionality of H-D coordinates. Then, based on the feature of HD coordinates, we propose an improved SVM algorithm. The proposed algorithm divides the hexagonal vector space diagram into three diamond-shaped areas equally and can take full advantage of the similarities among them. Consequently, the unbalance problem is solved and the calculations are still compact. In addition, the proposed algorithm has another two features: simplified calculation in a condition of overmodulation and better balance performance when switching frequency equals a multiple of 150 Hz. Based on our findings, we believe the proposed SVM algorithm is more practical than others and is suitable for large level-number applications like three-phase modular multilevel converters. Simulations in various operating conditions are done.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124005125","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635925
M. Uddin, G. Mirzaeva, G. Goodwin
Common-mode-voltage (CMV) is known for creating electromagnetic interference and bearing currents in industrial drive applications. This problem is exacerbated in mobile applications, due to the use of long cables carrying supply and protective earth conductors. In such applications matrix converters are seen as a potential drive solution. This paper presents a detailed study showing the possibility to completely eliminate CMV in the matrix converter based system, using voltage control based model predictive control (MPC). The paper compares performance of the direct matrix converter (DMC) for different output frequencies, under the imposed condition of zero CMV. The paper also presents a systematical discretization method, which is used to accurately calculate the input filter constants. Based on extensive simulations performed in MATLAB-Simulink environment, the paper demonstrates suitability of DMC based drives for CMV-sensitive applications.
{"title":"Model Predictive Control of Direct Matrix Converter with Common Mode Voltage Elimination","authors":"M. Uddin, G. Mirzaeva, G. Goodwin","doi":"10.1109/SPEC.2018.8635925","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635925","url":null,"abstract":"Common-mode-voltage (CMV) is known for creating electromagnetic interference and bearing currents in industrial drive applications. This problem is exacerbated in mobile applications, due to the use of long cables carrying supply and protective earth conductors. In such applications matrix converters are seen as a potential drive solution. This paper presents a detailed study showing the possibility to completely eliminate CMV in the matrix converter based system, using voltage control based model predictive control (MPC). The paper compares performance of the direct matrix converter (DMC) for different output frequencies, under the imposed condition of zero CMV. The paper also presents a systematical discretization method, which is used to accurately calculate the input filter constants. Based on extensive simulations performed in MATLAB-Simulink environment, the paper demonstrates suitability of DMC based drives for CMV-sensitive applications.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"417 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117315332","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635878
Y. Baviskar, U. Suryawanshi, A. Sheikh
The railway signalling domain is a complex critical infrastructure, linking communication and number of control elements. Ensuring safety in railway signalling system is always considered as a guarantee of intact operation of the railway. Current signalling system composes of centralized controllers which provide a single feature such as interlocking, and level crossing control. The Indian Railways (IR) uses Panel Interlocking (PI), Route Relay Interlocking (RRI), and Solid State Interlocking (SSI) or Electronic Interlocking (EI) for signalling safety, however, permitting movement of the trains lies in the hands of a human. The main challenge is to combine multiple sources of data and define a system which can intensify the functionality of the system. This paper mainly focuses on development of an automated model, beneficial to Intelligent Signalling System (ISS). Assessing its ability to take a decision which authorizes the movement of trains according to the timetable and modify it depending on real-time information using Machine Learning (ML). For modelling, IR standard single line station layout is considered and graphical model-based design techniques are implied. For analysis consider the track sections as nodes, signals as the start point and the end point linked to specific routes and assessing the developed model for various operating scenarios keeping a strict check on completeness and consistency. Implementation of such system in the railway network will not only provide a comprehensive level of safety in railway transportation but also takes a step forward towards systematizing various methods and strategies such as rescheduling system, monitoring performance under one roof using ML
{"title":"Modelling of Track Layout for Intelligent Railway Signalling System: A Machine Learning Application","authors":"Y. Baviskar, U. Suryawanshi, A. Sheikh","doi":"10.1109/SPEC.2018.8635878","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635878","url":null,"abstract":"The railway signalling domain is a complex critical infrastructure, linking communication and number of control elements. Ensuring safety in railway signalling system is always considered as a guarantee of intact operation of the railway. Current signalling system composes of centralized controllers which provide a single feature such as interlocking, and level crossing control. The Indian Railways (IR) uses Panel Interlocking (PI), Route Relay Interlocking (RRI), and Solid State Interlocking (SSI) or Electronic Interlocking (EI) for signalling safety, however, permitting movement of the trains lies in the hands of a human. The main challenge is to combine multiple sources of data and define a system which can intensify the functionality of the system. This paper mainly focuses on development of an automated model, beneficial to Intelligent Signalling System (ISS). Assessing its ability to take a decision which authorizes the movement of trains according to the timetable and modify it depending on real-time information using Machine Learning (ML). For modelling, IR standard single line station layout is considered and graphical model-based design techniques are implied. For analysis consider the track sections as nodes, signals as the start point and the end point linked to specific routes and assessing the developed model for various operating scenarios keeping a strict check on completeness and consistency. Implementation of such system in the railway network will not only provide a comprehensive level of safety in railway transportation but also takes a step forward towards systematizing various methods and strategies such as rescheduling system, monitoring performance under one roof using ML","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115118310","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635941
Yuanzhu Chang, Jiabing Hu, E. Zhang, Xiaojie Zhang
Due to Type-3 wind turbine (WT) has already become a highly penetrated power source in modern power systems, characterizing its properties during short circuit is a basic requirement for system analysis. However, although nonlinearity, such as saturation effect of doubly fed induction generator (DFIG) and the dynamic of phase-locked loop (PLL), is a critical determinant, it has been simply ignored in the existing literatures. This paper is focusing on the impact of nonlinearity on Type-3 WT's fault current. First, a 10kW experimental prototype is carefully designed in laboratorial scale to demonstrate the dynamic performance of Type-3 WT during low voltage ride through (LVRT). Then, the impact of those nonlinear elements on fault current is quantified through the comparisons with the analytical results that are calculated without the consideration of nonlinearity. It shows that the nonlinear feature mainly influences the maximum value of fault current in the instant control time scale. Hence, expressions and method are proposed to evaluate the actual momentary current of a Type-3 WT. The conclusion of this paper is expected to be implemented in rating circuit breakers and other equipment.
{"title":"Impact of Nonlinearity on Type-3 WT's Fault Current","authors":"Yuanzhu Chang, Jiabing Hu, E. Zhang, Xiaojie Zhang","doi":"10.1109/SPEC.2018.8635941","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635941","url":null,"abstract":"Due to Type-3 wind turbine (WT) has already become a highly penetrated power source in modern power systems, characterizing its properties during short circuit is a basic requirement for system analysis. However, although nonlinearity, such as saturation effect of doubly fed induction generator (DFIG) and the dynamic of phase-locked loop (PLL), is a critical determinant, it has been simply ignored in the existing literatures. This paper is focusing on the impact of nonlinearity on Type-3 WT's fault current. First, a 10kW experimental prototype is carefully designed in laboratorial scale to demonstrate the dynamic performance of Type-3 WT during low voltage ride through (LVRT). Then, the impact of those nonlinear elements on fault current is quantified through the comparisons with the analytical results that are calculated without the consideration of nonlinearity. It shows that the nonlinear feature mainly influences the maximum value of fault current in the instant control time scale. Hence, expressions and method are proposed to evaluate the actual momentary current of a Type-3 WT. The conclusion of this paper is expected to be implemented in rating circuit breakers and other equipment.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121096623","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635948
Jiahui Jiang, C. Coates
Microgrids provide an effective way to increase renewable energy (RE) penetration level in the power network. The cooperation of renewable microsources, energy storage systems (ESSs) and conventional dispatchable microsources is an important issue in the operation of an islanded microgrid. In this paper, the designed power sharing scheme aims to maximize renewable penetration level by giving RE the priority of power supply. This requires RE to be able to regulate grid voltage rather than only operating under power control mode (PCM) in the conventional way. Droop control strategy is modified to support a microsource operating under both voltage control mode (VCM) and PCM, and switching between both modes automatically. It also enables “peer to peer” and “plug and play” operation of a microgrid. Meanwhile, the characteristics of power sources (photovoltaic and batteries) are considered. DC/DC converter controller is proposed correspondingly with the aim of keeping the system stable. Simulations have been conducted to verify its effectiveness.
{"title":"Power Sharing Scheme for an Islanded Microgrid Including Renewables and Battery Storage","authors":"Jiahui Jiang, C. Coates","doi":"10.1109/SPEC.2018.8635948","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635948","url":null,"abstract":"Microgrids provide an effective way to increase renewable energy (RE) penetration level in the power network. The cooperation of renewable microsources, energy storage systems (ESSs) and conventional dispatchable microsources is an important issue in the operation of an islanded microgrid. In this paper, the designed power sharing scheme aims to maximize renewable penetration level by giving RE the priority of power supply. This requires RE to be able to regulate grid voltage rather than only operating under power control mode (PCM) in the conventional way. Droop control strategy is modified to support a microsource operating under both voltage control mode (VCM) and PCM, and switching between both modes automatically. It also enables “peer to peer” and “plug and play” operation of a microgrid. Meanwhile, the characteristics of power sources (photovoltaic and batteries) are considered. DC/DC converter controller is proposed correspondingly with the aim of keeping the system stable. Simulations have been conducted to verify its effectiveness.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134476840","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635909
Meng Jia, Zhuochao Sun, L. Siek
This paper presents a Zero-Voltage-Detector (ZVD) circuit for buck converters working in discontinuous conduction mode (DCM). A novel comparator with pre-amplification property is proposed to provide fast sensing and comparison to optimize the switching timing of power transistors, hence minimizing the power losses caused by the reverse inductor current. The proposed DCM buck converter is fabricated using 0.18um CMOS technology with a chip area of 0.9mm 2. The simulated sensing delay of the proposed ZVD is only about 6ns. It achieves $gt 85$% power efficiency for load currents of $gt 10$ mA when the input and output voltages are 3.3V and 2.4V respectively.
{"title":"A Novel Zero-Voltage-Detector for Buck Converter in Discontinuous Conduction Mode(DCM)","authors":"Meng Jia, Zhuochao Sun, L. Siek","doi":"10.1109/SPEC.2018.8635909","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635909","url":null,"abstract":"This paper presents a Zero-Voltage-Detector (ZVD) circuit for buck converters working in discontinuous conduction mode (DCM). A novel comparator with pre-amplification property is proposed to provide fast sensing and comparison to optimize the switching timing of power transistors, hence minimizing the power losses caused by the reverse inductor current. The proposed DCM buck converter is fabricated using 0.18um CMOS technology with a chip area of 0.9mm 2. The simulated sensing delay of the proposed ZVD is only about 6ns. It achieves $gt 85$% power efficiency for load currents of $gt 10$ mA when the input and output voltages are 3.3V and 2.4V respectively.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132893503","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8636022
H. Zong, Xiangjun Zhang, Xiaorui Zhang, Yijie Wang, Dianguo Xu, Hailin Tian, Xiufang Liu, D. Yan
Contact-type rotary electronic devices have the disadvantages of easy wear and no electrical isolation, which is not conducive to the safety and reliability of the device. In this paper, a contactless rotary inductively coupled power transfer (ICPT) device has been proposed, which provides electrical isolation, higher flexibility and greater security. The device consists of a rotary loosely coupled transformer, S/LCC compensated resonant converter and a DC-DC converter. To verify the analysis and design, a 400W rotatable prototype with a 50mm gap was fabricated and tested. An overall efficiency 84.3% was achieved from DC 40V input to DC 40 V output.
{"title":"Design of a Contactless Rotary Device Based on Inductively Coupled Power Transfer","authors":"H. Zong, Xiangjun Zhang, Xiaorui Zhang, Yijie Wang, Dianguo Xu, Hailin Tian, Xiufang Liu, D. Yan","doi":"10.1109/SPEC.2018.8636022","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8636022","url":null,"abstract":"Contact-type rotary electronic devices have the disadvantages of easy wear and no electrical isolation, which is not conducive to the safety and reliability of the device. In this paper, a contactless rotary inductively coupled power transfer (ICPT) device has been proposed, which provides electrical isolation, higher flexibility and greater security. The device consists of a rotary loosely coupled transformer, S/LCC compensated resonant converter and a DC-DC converter. To verify the analysis and design, a 400W rotatable prototype with a 50mm gap was fabricated and tested. An overall efficiency 84.3% was achieved from DC 40V input to DC 40 V output.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129241171","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635917
F. Han, Zhun Meng
In this paper, a novel CLTCL multi-resonant soft-switching DC-DC converter is proposed. It employs the dual transformers architecture, whose secondary sides are connected in parallel. The resonant tank contains multiple resonant components of capacitors and inductors. Through the appropriate parameter design, the converter can transmit the 1st and the 3rd harmonic active power simultaneously. Consequently, the utilization rate of the resonant current and high efficient conversion are both guaranteed. Widely adjustable DC voltage gain range is also achieved within a narrow frequency range. Besides, all the power switches obtain the turn-on zero-voltage-switching (ZVS), while the diodes attain the turn-on and turn-off zero-current-switching (ZCS) or quasi ZCS (Q-ZCS). To verify the feasibility of the converter, a 500W prototype is built and tested. The proposed converter is able to maintain relatively high efficiency (around 95%) among a wide load range. The highest efficiency reaches 95.4% at 300W.
{"title":"A Parallel-Output CLTCL Multi-Resonant Soft-Switching DC-DC Converter","authors":"F. Han, Zhun Meng","doi":"10.1109/SPEC.2018.8635917","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635917","url":null,"abstract":"In this paper, a novel CLTCL multi-resonant soft-switching DC-DC converter is proposed. It employs the dual transformers architecture, whose secondary sides are connected in parallel. The resonant tank contains multiple resonant components of capacitors and inductors. Through the appropriate parameter design, the converter can transmit the 1st and the 3rd harmonic active power simultaneously. Consequently, the utilization rate of the resonant current and high efficient conversion are both guaranteed. Widely adjustable DC voltage gain range is also achieved within a narrow frequency range. Besides, all the power switches obtain the turn-on zero-voltage-switching (ZVS), while the diodes attain the turn-on and turn-off zero-current-switching (ZCS) or quasi ZCS (Q-ZCS). To verify the feasibility of the converter, a 500W prototype is built and tested. The proposed converter is able to maintain relatively high efficiency (around 95%) among a wide load range. The highest efficiency reaches 95.4% at 300W.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130469830","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635981
S. Esmaeili, S. Jadid, A. Anvari‐Moghaddam, J. Guerrero
In this paper, optimal operational scheduling in smart microgrids in conjunction with hourly reconfiguration is investigated. The optimization problem has the objective function of minimizing total costs including the total loss, cost of bilateral contracts with fuel cell and photovoltaic owners, switching cost, and cost of exchanged power with wholesale market. To prevent the aged and risky switches from frequent switching actions over a short-term scheduling, a new index for switching action based on the remotely-controlled switch (RCS) ages and critical locations in the network is defined. The proposed optimization model is non-convex and non-linear, which is transformed into a Mixed-Integer Linear Programming (MILP) problem to be solvable with conventional solvers. The satisfactory performance of the proposed model is demonstrated on the 84-bus Taiwan power company system.
{"title":"Optimal Operational Scheduling of Smart Microgrids Considering Hourly Reconfiguration","authors":"S. Esmaeili, S. Jadid, A. Anvari‐Moghaddam, J. Guerrero","doi":"10.1109/SPEC.2018.8635981","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635981","url":null,"abstract":"In this paper, optimal operational scheduling in smart microgrids in conjunction with hourly reconfiguration is investigated. The optimization problem has the objective function of minimizing total costs including the total loss, cost of bilateral contracts with fuel cell and photovoltaic owners, switching cost, and cost of exchanged power with wholesale market. To prevent the aged and risky switches from frequent switching actions over a short-term scheduling, a new index for switching action based on the remotely-controlled switch (RCS) ages and critical locations in the network is defined. The proposed optimization model is non-convex and non-linear, which is transformed into a Mixed-Integer Linear Programming (MILP) problem to be solvable with conventional solvers. The satisfactory performance of the proposed model is demonstrated on the 84-bus Taiwan power company system.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131576609","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 : 2018-12-01DOI: 10.1109/SPEC.2018.8635922
E. Alston, S. Jayasinghe, C. Baguley, U. Madawala
This paper presents thermal modelling of a Lithium-ion battery module designed to power a fully electric ferry. The operation requirement is to recharge the battery energy storage system within 13 minutes. This presents a thermal management problem with the battery generating excessive heat whilst charging at a rate of 3.45C. To mitigate this problem the battery was analyzed using the ANSYS Fluent software under various cooling methods applied. The results of this analysis revealed that the temperature of the battery can be maintained in the optimal range using an air cooling system.
{"title":"Thermal Management of an Electric Ferry Lithium-Ion Battery System","authors":"E. Alston, S. Jayasinghe, C. Baguley, U. Madawala","doi":"10.1109/SPEC.2018.8635922","DOIUrl":"https://doi.org/10.1109/SPEC.2018.8635922","url":null,"abstract":"This paper presents thermal modelling of a Lithium-ion battery module designed to power a fully electric ferry. The operation requirement is to recharge the battery energy storage system within 13 minutes. This presents a thermal management problem with the battery generating excessive heat whilst charging at a rate of 3.45C. To mitigate this problem the battery was analyzed using the ANSYS Fluent software under various cooling methods applied. The results of this analysis revealed that the temperature of the battery can be maintained in the optimal range using an air cooling system.","PeriodicalId":335893,"journal":{"name":"2018 IEEE 4th Southern Power Electronics Conference (SPEC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114668575","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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