Pub Date : 2016-11-01DOI: 10.1109/ICSET.2016.7811771
Van-Hai Bui, A. Hussain, Thai-Thanh Nguyen, Hak-Man Kim
The faults in a microgrid (MG) pose many challenges for operation of the system. They may lead to an increase in the operation cost. In this paper, in order to solve the problem, a novel algorithm based on the auto-configuration of MGs is proposed for minimizing the operation cost in grid-connected mode. A centralized energy management system (EMS) is also developed in accordance with the proposed algorithm, which is responsible for communication in the system and performs optimization. The EMS updates the system information and reschedules its resources upon occurrence of the faults or recovery from the faults for assuring economical operation of the MG system.
{"title":"Real-time optimization for microgrid operation based on auto-configuration in grid-connected mode","authors":"Van-Hai Bui, A. Hussain, Thai-Thanh Nguyen, Hak-Man Kim","doi":"10.1109/ICSET.2016.7811771","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811771","url":null,"abstract":"The faults in a microgrid (MG) pose many challenges for operation of the system. They may lead to an increase in the operation cost. In this paper, in order to solve the problem, a novel algorithm based on the auto-configuration of MGs is proposed for minimizing the operation cost in grid-connected mode. A centralized energy management system (EMS) is also developed in accordance with the proposed algorithm, which is responsible for communication in the system and performs optimization. The EMS updates the system information and reschedules its resources upon occurrence of the faults or recovery from the faults for assuring economical operation of the MG system.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"139 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128892498","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811762
N. T. Hang, U. Lüdtke
Channel induction furnaces are commonly used for heating and melting alloys in the foundry industry worldwide. The melting frequency is the main issue when constructing an efficient channel furnace. This work investigates an efficient frequency for achieving more favorable results in channel induction furnaces through simulation in two-dimensional space using ANSYS Maxwell. Additionally, the best design solution for the inductor profile is also discussed.
{"title":"Numerical simulation of channel induction furnace to investigate frequency-dependent efficiency","authors":"N. T. Hang, U. Lüdtke","doi":"10.1109/ICSET.2016.7811762","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811762","url":null,"abstract":"Channel induction furnaces are commonly used for heating and melting alloys in the foundry industry worldwide. The melting frequency is the main issue when constructing an efficient channel furnace. This work investigates an efficient frequency for achieving more favorable results in channel induction furnaces through simulation in two-dimensional space using ANSYS Maxwell. Additionally, the best design solution for the inductor profile is also discussed.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127702300","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811811
L. Anh-Tuan, Bui Duc-Hung, Phung Anh-Tuan
Starting phase of a motor in general is a very complicated period. Motors draw a large amount of current, several times the normal full-load current when first energized. In starting period of Line Start Permanent Magnet Synchronous Motors (LSPMSM), high current causes saturation in stator and rotor. The effect of saturation on the “q-axis” synchronous inductance, Lmq, of LSPMSM is studied in this paper. The paper will proposes a method to calculate the Lmq using the Lumped Parameter Method. Comparative results will be carried on using finite element method. Good agreement between results is justified.
{"title":"Saturable q-axis magnetizing inductance calculation of Line Start-Permanent Magnet Synchronous Motors using Lumped Parameter Mode","authors":"L. Anh-Tuan, Bui Duc-Hung, Phung Anh-Tuan","doi":"10.1109/ICSET.2016.7811811","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811811","url":null,"abstract":"Starting phase of a motor in general is a very complicated period. Motors draw a large amount of current, several times the normal full-load current when first energized. In starting period of Line Start Permanent Magnet Synchronous Motors (LSPMSM), high current causes saturation in stator and rotor. The effect of saturation on the “q-axis” synchronous inductance, Lmq, of LSPMSM is studied in this paper. The paper will proposes a method to calculate the Lmq using the Lumped Parameter Method. Comparative results will be carried on using finite element method. Good agreement between results is justified.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"291 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134564393","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811747
D. H. Nguyen, T. Narikiyo, M. Kawanishi
This paper proposes a distributed control approach for optimal power dispatch towards environment-friendly power grids. To do so, an optimization problem called environmental economic dispatch, which is subjected to physical constraints of the considered power system, is solved. Consequently, we propose an approach based on the Alternating Direction Method of Multipliers (ADMM) to obtain the globally optimal solution of that optimization problem in a distributed manner under a fast convergence. As a result, each generation unit can derive by itself an optimal generated power that minimizes with compromising both fuel and emission costs while satisfying both global and local physical constraints caused by the whole system and by its own. The most distinguished feature of this approach is that the power balance constraint is always guaranteed during the execution of the algorithm. Finally, the performance of our proposed approach is illustrated through the simulation to a realistic power system and the comparison with another method.
{"title":"Dynamic environmental economic dispatch: A distributed solution based on an alternating direction method of multipliers","authors":"D. H. Nguyen, T. Narikiyo, M. Kawanishi","doi":"10.1109/ICSET.2016.7811747","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811747","url":null,"abstract":"This paper proposes a distributed control approach for optimal power dispatch towards environment-friendly power grids. To do so, an optimization problem called environmental economic dispatch, which is subjected to physical constraints of the considered power system, is solved. Consequently, we propose an approach based on the Alternating Direction Method of Multipliers (ADMM) to obtain the globally optimal solution of that optimization problem in a distributed manner under a fast convergence. As a result, each generation unit can derive by itself an optimal generated power that minimizes with compromising both fuel and emission costs while satisfying both global and local physical constraints caused by the whole system and by its own. The most distinguished feature of this approach is that the power balance constraint is always guaranteed during the execution of the algorithm. Finally, the performance of our proposed approach is illustrated through the simulation to a realistic power system and the comparison with another method.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126268447","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811757
Ryuto Shigenobu, Ahmad Samim Noorzad, A. Yona, T. Senjyu
This paper proposes an application of multi objective optimization method in a smart grid. Recently, smart gird problems has become more diversified and complex which cannot be solved by single objective optimization method. Technical, economical, and placement problems of control devices should also be considered as required. The technical and economical problems are treated as ordinal multi objective optimization problem, in addition, with the operating schedule of control devices. The placement problem can be solved by using concept of combinational optimization. Therefore, this paper provides an optimization method, which simultaneously considers both multi objects and combinational problem. The handling method for combinational problems and two fold diversity in pareto optimal solutions are also provided. Finally, an index is provided from which solution can be selected by system designer and operator. This method enables to calculate annual simulation, which helps to solve optimal placement and scheduling problem throughout annual simulation.
{"title":"Multi-objective optimization approach for SVRs annual optimal operation and optimal placement","authors":"Ryuto Shigenobu, Ahmad Samim Noorzad, A. Yona, T. Senjyu","doi":"10.1109/ICSET.2016.7811757","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811757","url":null,"abstract":"This paper proposes an application of multi objective optimization method in a smart grid. Recently, smart gird problems has become more diversified and complex which cannot be solved by single objective optimization method. Technical, economical, and placement problems of control devices should also be considered as required. The technical and economical problems are treated as ordinal multi objective optimization problem, in addition, with the operating schedule of control devices. The placement problem can be solved by using concept of combinational optimization. Therefore, this paper provides an optimization method, which simultaneously considers both multi objects and combinational problem. The handling method for combinational problems and two fold diversity in pareto optimal solutions are also provided. Finally, an index is provided from which solution can be selected by system designer and operator. This method enables to calculate annual simulation, which helps to solve optimal placement and scheduling problem throughout annual simulation.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134019907","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811791
K. Tran, Terese L⊘vås, Ø. Skreiberg, R. S. Kempegowda
This paper describes and analyzes a conceptual design of a bioenergy system for sustainable electricity production from low-grade biomass resources such as forest and agricultural residues, which is suitable for rural areas in developing regions susceptible to intermittent electricity supply. In order to make it a closed-loop system, the paper also identifies a bio-refining strategy focusing on production of high-grade activated carbons for energy storage using supercapacitor.
{"title":"Hydrochar slurry fuels and high-grade activated carbon for electricity production and storage Conceptual process design and analysis","authors":"K. Tran, Terese L⊘vås, Ø. Skreiberg, R. S. Kempegowda","doi":"10.1109/ICSET.2016.7811791","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811791","url":null,"abstract":"This paper describes and analyzes a conceptual design of a bioenergy system for sustainable electricity production from low-grade biomass resources such as forest and agricultural residues, which is suitable for rural areas in developing regions susceptible to intermittent electricity supply. In order to make it a closed-loop system, the paper also identifies a bio-refining strategy focusing on production of high-grade activated carbons for energy storage using supercapacitor.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132930815","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811751
Diksha Kaur, T. Lie, N. Nair, B. Vallès
The stochastic nature of the wind and the highly non linear transform from wind speed to electrical energy makes it more difficult to determine how to dispatch the power in order to guarantee both operational cost reduction and power system security. From a network constraint perspective for the economic dispatch problem one of the factors to be accounted for is voltage security, which impacts both active and/or reactive power dispatch. In this paper, an Optimal Reactive Power Dispatch based on Particle Swarm Optimization (PSO) using Graph Theory has been proposed to overcome the above-mentioned problem. Graph Theory has been used since it becomes very useful in cases of fault detection and isolation or to shed unbalanced nodes in case of excessive or insufficient supply. Simulation studies on the modified IEEE-14 Bus System have been conducted to show the effectiveness of the proposed method.
{"title":"An optimal reactive power dispatch (ORPD) for voltage security using particle swarm optimization (PSO) in graph theory","authors":"Diksha Kaur, T. Lie, N. Nair, B. Vallès","doi":"10.1109/ICSET.2016.7811751","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811751","url":null,"abstract":"The stochastic nature of the wind and the highly non linear transform from wind speed to electrical energy makes it more difficult to determine how to dispatch the power in order to guarantee both operational cost reduction and power system security. From a network constraint perspective for the economic dispatch problem one of the factors to be accounted for is voltage security, which impacts both active and/or reactive power dispatch. In this paper, an Optimal Reactive Power Dispatch based on Particle Swarm Optimization (PSO) using Graph Theory has been proposed to overcome the above-mentioned problem. Graph Theory has been used since it becomes very useful in cases of fault detection and isolation or to shed unbalanced nodes in case of excessive or insufficient supply. Simulation studies on the modified IEEE-14 Bus System have been conducted to show the effectiveness of the proposed method.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127555917","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811752
B. Sen, Ren Kailin, Romika Sharma, Jayantika Soni, S. K. Panda
Electric spring is a new smart grid technology which can regulate voltage fluctuations caused due to integration of intermittent renewable energy sources. So far electric springs have been studied mostly with resistive loads which are ON all the time. This paper analyses the performance of electric spring when connected with different types of variable loads. The electric spring circuit was simulated in MATLAB/Simulink environment with three types of loads — resistive, resistive-inductive and resistive-capacitive. The circuit was modified such that some of the loads are OFF for a certain part of the simulation. The effect of load variation on the performance of electric spring did not vary with the type of load. However, the change in stress on electric spring with load variation depends on the type of load attached to it. A detailed analysis has been provided in the paper.
{"title":"Performance evaluation of electric spring: Effect of load variation on voltage regulation","authors":"B. Sen, Ren Kailin, Romika Sharma, Jayantika Soni, S. K. Panda","doi":"10.1109/ICSET.2016.7811752","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811752","url":null,"abstract":"Electric spring is a new smart grid technology which can regulate voltage fluctuations caused due to integration of intermittent renewable energy sources. So far electric springs have been studied mostly with resistive loads which are ON all the time. This paper analyses the performance of electric spring when connected with different types of variable loads. The electric spring circuit was simulated in MATLAB/Simulink environment with three types of loads — resistive, resistive-inductive and resistive-capacitive. The circuit was modified such that some of the loads are OFF for a certain part of the simulation. The effect of load variation on the performance of electric spring did not vary with the type of load. However, the change in stress on electric spring with load variation depends on the type of load attached to it. A detailed analysis has been provided in the paper.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123574304","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811808
Bui Minh Dinh, Honghao Tien
Line start permanent magnet synchronous motor (LSPMSM) is one of the highest efficiency motors due to no rotor copper loss at synchronous speed and self starting. LSPMSM has torque characteristics of both induction motor IM and Permanent Magnet Synchronous Motor-PMSM. In order to maximize efficiency, an optimal design method of cage-bars and magnet shape has to be considered [1]. The geometry parameters of stator and rotor can be obtained by an analytical model method [2] and validated by FEM simulation. This paper describes a comprehensive design of a three phase LPMSM motor 7.5 kW for electrical drive application. A maximum efficiency design of LPMSM will be implemented by both analytical and FEM methods.
{"title":"Maximum efficiency design of line start permanent magnet synchronous motor","authors":"Bui Minh Dinh, Honghao Tien","doi":"10.1109/ICSET.2016.7811808","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811808","url":null,"abstract":"Line start permanent magnet synchronous motor (LSPMSM) is one of the highest efficiency motors due to no rotor copper loss at synchronous speed and self starting. LSPMSM has torque characteristics of both induction motor IM and Permanent Magnet Synchronous Motor-PMSM. In order to maximize efficiency, an optimal design method of cage-bars and magnet shape has to be considered [1]. The geometry parameters of stator and rotor can be obtained by an analytical model method [2] and validated by FEM simulation. This paper describes a comprehensive design of a three phase LPMSM motor 7.5 kW for electrical drive application. A maximum efficiency design of LPMSM will be implemented by both analytical and FEM methods.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123961720","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 : 2016-11-01DOI: 10.1109/ICSET.2016.7811777
H. N. Tran, P. Q. Dzung, N. A. Le, T. Nguyen
This paper introduces a predictive voltage controller for multilevel inverter used in Dynamic Voltage Restorer, which is able to protect a sensitive load against grid voltage sags dynamically. The compensated voltages are obtained by using Phase-Lock Loop to detect the phase and the magnitude of the grid voltage then compare to the load reference voltage. A three-phase NPC inverter with output LC filter is used to generate the ac voltage that will be injected to the load via injection transformer to compensate sag voltages. A new method to generate very high quality compensated voltages based on predictive controller will be presented. The model of the systems include NPC inverter and LC filter are built to establish the equations that can be applied to calculate the future values of the compensated voltage and the dc link voltage capacitor at the next sampling time. After that, the optimal voltage vectors that minimize both the compensated voltage and the dc link capacitor errors will be chosen for the next switching state of the NPC inverter. Obtained simulation results verified the theoretical analysis. The compensated voltage is almost sinusoidal and the load voltage is always constant with THD lower than 2% when facing voltage sags.
{"title":"Dynamic voltage restorer-multilevel inverter based on predictive voltage controller","authors":"H. N. Tran, P. Q. Dzung, N. A. Le, T. Nguyen","doi":"10.1109/ICSET.2016.7811777","DOIUrl":"https://doi.org/10.1109/ICSET.2016.7811777","url":null,"abstract":"This paper introduces a predictive voltage controller for multilevel inverter used in Dynamic Voltage Restorer, which is able to protect a sensitive load against grid voltage sags dynamically. The compensated voltages are obtained by using Phase-Lock Loop to detect the phase and the magnitude of the grid voltage then compare to the load reference voltage. A three-phase NPC inverter with output LC filter is used to generate the ac voltage that will be injected to the load via injection transformer to compensate sag voltages. A new method to generate very high quality compensated voltages based on predictive controller will be presented. The model of the systems include NPC inverter and LC filter are built to establish the equations that can be applied to calculate the future values of the compensated voltage and the dc link voltage capacitor at the next sampling time. After that, the optimal voltage vectors that minimize both the compensated voltage and the dc link capacitor errors will be chosen for the next switching state of the NPC inverter. Obtained simulation results verified the theoretical analysis. The compensated voltage is almost sinusoidal and the load voltage is always constant with THD lower than 2% when facing voltage sags.","PeriodicalId":164446,"journal":{"name":"2016 IEEE International Conference on Sustainable Energy Technologies (ICSET)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117037388","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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