Pub Date : 2018-08-01DOI: 10.1109/EPEPEMC.2018.8521932
Kiryong Kim, Jong-Pil Lee, Tae-Jin Kim, J. Baek
Droop control strategy with a novel characteristic model is proposed in this paper. Using a communication line to control the parallel system, the flexibility of the system is limited and error can occur due to the external disturbance. The droop is the key function to control the parallel operating system. Conventional droop control model is generally based on the linear function. The reference value changes depending on the droop coefficient and power variation, and also the droop coefficient is related to the steady-state errors and dynamic response. Proposed droop characteristic model consists of the linear and quadratic functions. It can minimize the variation of the output reference in a specific power range and also improve the transient dynamic response. The proposed droop characteristic model is verified by the simulation result.
{"title":"Droop Control Strategy with a Novel Characteristic Model","authors":"Kiryong Kim, Jong-Pil Lee, Tae-Jin Kim, J. Baek","doi":"10.1109/EPEPEMC.2018.8521932","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2018.8521932","url":null,"abstract":"Droop control strategy with a novel characteristic model is proposed in this paper. Using a communication line to control the parallel system, the flexibility of the system is limited and error can occur due to the external disturbance. The droop is the key function to control the parallel operating system. Conventional droop control model is generally based on the linear function. The reference value changes depending on the droop coefficient and power variation, and also the droop coefficient is related to the steady-state errors and dynamic response. Proposed droop characteristic model consists of the linear and quadratic functions. It can minimize the variation of the output reference in a specific power range and also improve the transient dynamic response. The proposed droop characteristic model is verified by the simulation result.","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131443777","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 : 2018-08-01DOI: 10.1109/EPEPEMC.2018.8521881
Koga Yasutaka, Mishima Tomokazu
A Dual Active Bridge (DAB) converter controlled by phase difference or phase-shift control has several disadvantages such as soft-switching limitation and increase of reactive power under the condition of unbalanced two-port dc voltages. As an effective solution to those technical issues, Variable Frequency Phase Difference Control (VF-PDC) for a symmetrical series Resonant tank (CLLC)-applied Bidirectional DC-DC converter (RBDC) is newly developed, and its performances on soft-switching and reactive power reduction are analyzed theoretically and demonstrated by a experiment of the prototype.
{"title":"Analysis and Verification on CLLC Resonant Bidirectional DC-DC Converter Based on Variable Frequency Phase Difference Control Principle","authors":"Koga Yasutaka, Mishima Tomokazu","doi":"10.1109/EPEPEMC.2018.8521881","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2018.8521881","url":null,"abstract":"A Dual Active Bridge (DAB) converter controlled by phase difference or phase-shift control has several disadvantages such as soft-switching limitation and increase of reactive power under the condition of unbalanced two-port dc voltages. As an effective solution to those technical issues, Variable Frequency Phase Difference Control (VF-PDC) for a symmetrical series Resonant tank (CLLC)-applied Bidirectional DC-DC converter (RBDC) is newly developed, and its performances on soft-switching and reactive power reduction are analyzed theoretically and demonstrated by a experiment of the prototype.","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128336540","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 : 2018-08-01DOI: 10.1109/EPEPEMC.2018.8521968
Cristian Babetto, N. Bianchi, C. Lopez, Antoni García, L. Romeral
The aim of this paper is to describe the torque and power behavior of synchronous reluctance motors for high-speed applications. The design of such motors is the result of a trade-off between magnetic and mechanical aspects. In fact, the radial ribs have to be properly design limiting the quadrature flux axis and the mechanical stresses due to centrifugal forces. The rotor geometry resulting from such compromise determines an unusual flux density distribution that cannot be accurately described wih simple analytical models based on restrictive hypothesis. For this reason, a nonlinear reluctance network is proposed to consider the saturation of both rotor and stator. The results of this approach are confirmed by finite element analysis.
{"title":"High-Speed Synchronous Reluctance Motors: Computation of the Power Limits by Means of Reluctance Networks","authors":"Cristian Babetto, N. Bianchi, C. Lopez, Antoni García, L. Romeral","doi":"10.1109/EPEPEMC.2018.8521968","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2018.8521968","url":null,"abstract":"The aim of this paper is to describe the torque and power behavior of synchronous reluctance motors for high-speed applications. The design of such motors is the result of a trade-off between magnetic and mechanical aspects. In fact, the radial ribs have to be properly design limiting the quadrature flux axis and the mechanical stresses due to centrifugal forces. The rotor geometry resulting from such compromise determines an unusual flux density distribution that cannot be accurately described wih simple analytical models based on restrictive hypothesis. For this reason, a nonlinear reluctance network is proposed to consider the saturation of both rotor and stator. The results of this approach are confirmed by finite element analysis.","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"18 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120918205","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 : 2018-08-01DOI: 10.1109/EPEPEMC.2018.8521898
M. Haider, D. Bortis, J. Kolar, Y. Ono
Single-phase supplied variable speed drives are mostly realized as two-stage systems comprising a single-phase PFC rectifier and a three-phase inverter stage. The intrinsic power pulsation of single-phase converters with twice the grid frequency is typically buffered by a bulky electrolytic DC-link capacitor, which is a major drawback concerning converter volume, costs and especially lifetime. Therefore, this paper presents a novel and simple implementation of a Machine-integrated Power Pulsation Buffer (MPPB) concept, which utilizes the inertia of the rotating mass as an energy storage to cover a part or the full input power pulsation. This allows to either reduce or even eliminate the electrolytic capacitor resulting in a smaller and cheaper converter system with increased lifetime. The proposed MPPB control concept is fully implemented in software, which means that only simple couplings are added to the control structure. Since the hardware remains unaffected, this concept can also be easily applied to already existing drive systems. In addition to the derivation of the control scheme, the proper operation of the MPPB is verified for steady-state and transient operation by circuit simulations.
{"title":"Sinusoidal Input Current and Average Speed Control of a Single-Phase Supplied Three-Phase Inverter Drive Without Electrolytic Capacitor","authors":"M. Haider, D. Bortis, J. Kolar, Y. Ono","doi":"10.1109/EPEPEMC.2018.8521898","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2018.8521898","url":null,"abstract":"Single-phase supplied variable speed drives are mostly realized as two-stage systems comprising a single-phase PFC rectifier and a three-phase inverter stage. The intrinsic power pulsation of single-phase converters with twice the grid frequency is typically buffered by a bulky electrolytic DC-link capacitor, which is a major drawback concerning converter volume, costs and especially lifetime. Therefore, this paper presents a novel and simple implementation of a Machine-integrated Power Pulsation Buffer (MPPB) concept, which utilizes the inertia of the rotating mass as an energy storage to cover a part or the full input power pulsation. This allows to either reduce or even eliminate the electrolytic capacitor resulting in a smaller and cheaper converter system with increased lifetime. The proposed MPPB control concept is fully implemented in software, which means that only simple couplings are added to the control structure. Since the hardware remains unaffected, this concept can also be easily applied to already existing drive systems. In addition to the derivation of the control scheme, the proper operation of the MPPB is verified for steady-state and transient operation by circuit simulations.","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115034941","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 : 2018-08-01DOI: 10.1109/EPEPEMC.2018.8521966
Y. Rozanov, K. Kryukov, M. Kiselev, M. Lepanov, Yuriy Tserkovsky, Ekaterina Namestnikova
This study describes the power conversion and control solution used in the electrical power take-off of a linear direct drive permanent magnet generator for an offshore wave energy device. The proposed solution is assigned to collect the power extracted directly from the phase coils of the generator, which have a large internal inductance. The control circuit with a switched capacitor bank is proposed. The solution demonstrated by the analysis backed up by simulation and experimental results.
{"title":"Power Conditioning Unit for Direct-Drive Wave Energy Converter","authors":"Y. Rozanov, K. Kryukov, M. Kiselev, M. Lepanov, Yuriy Tserkovsky, Ekaterina Namestnikova","doi":"10.1109/EPEPEMC.2018.8521966","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2018.8521966","url":null,"abstract":"This study describes the power conversion and control solution used in the electrical power take-off of a linear direct drive permanent magnet generator for an offshore wave energy device. The proposed solution is assigned to collect the power extracted directly from the phase coils of the generator, which have a large internal inductance. The control circuit with a switched capacitor bank is proposed. The solution demonstrated by the analysis backed up by simulation and experimental results.","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114980144","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 : 2018-08-01DOI: 10.1109/EPEPEMC.2018.8521941
Jouni Vuojolainen, N. Nevaranta, R. Jastrzebski, O. Pyrhonen
Visual educational tools are important in contributing to skills in the electrical engineering profession. This paper introduces an active magnetic bearing (AMB) design tool used to teach important skills in modern high-speed technology to undergraduate students. The proposed tool is based on MATLAB, and it has a visual and easy-to-understand graphical interface. The paper describes how to use the tool and gives a design example of an axial AMB. The tools provide an opportunity to import the design directly to a finite element method (FEM) software in order to enable further analysis. The tool is also discussed from the perspectives of research and education.
{"title":"MATLAB-Based Tool for Teaching of Active Magnetic Bearing Design to Undergraduate Students","authors":"Jouni Vuojolainen, N. Nevaranta, R. Jastrzebski, O. Pyrhonen","doi":"10.1109/EPEPEMC.2018.8521941","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2018.8521941","url":null,"abstract":"Visual educational tools are important in contributing to skills in the electrical engineering profession. This paper introduces an active magnetic bearing (AMB) design tool used to teach important skills in modern high-speed technology to undergraduate students. The proposed tool is based on MATLAB, and it has a visual and easy-to-understand graphical interface. The paper describes how to use the tool and gives a design example of an axial AMB. The tools provide an opportunity to import the design directly to a finite element method (FEM) software in order to enable further analysis. The tool is also discussed from the perspectives of research and education.","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133227917","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 : 2018-08-01DOI: 10.1109/epepemc.2018.8521852
{"title":"Keynote Addresses","authors":"","doi":"10.1109/epepemc.2018.8521852","DOIUrl":"https://doi.org/10.1109/epepemc.2018.8521852","url":null,"abstract":"","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134496527","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 : 2018-08-01DOI: 10.1109/epepemc.2018.8521878
{"title":"Power Electronics in Transportation (Road, Aerospace, Marine and Railway Vehicles, Electric and Hybrid Vehicles)","authors":"","doi":"10.1109/epepemc.2018.8521878","DOIUrl":"https://doi.org/10.1109/epepemc.2018.8521878","url":null,"abstract":"","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130978488","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 : 2018-08-01DOI: 10.1109/EPEPEMC.2018.8521880
D. Baimel, S. Tapuchi, S. Bronshtein, Y. Horen, N. Baimel
The paper proposes new MPPT Segmentation method for partial shading conditions. The proposed method is based on principle of division of the power-voltage curve into uniform segments and location of global maximum power point inside the chosen segment. In order to validate the algorithm, it was tested under different shading condition and with different PV systems. The simulation results show that the Segmentation algorithm precisely identifies the highest MPP on the power-voltage curve. The Segmentation algorithm was compared with standard P&O and also with other MPPT algorithms for partial shading conditions. This comparison showed that Segmentation algorithm provides better results and insures higher output power of the PV system than standard P&O and also with other MPPT algorithms. Simulation results also show that Segmentation algorithm works faster than P&O.
{"title":"Novel Segmentation Algorithm for Maximum Power Point Tracking in PV Systems Under Partial Shading Conditions","authors":"D. Baimel, S. Tapuchi, S. Bronshtein, Y. Horen, N. Baimel","doi":"10.1109/EPEPEMC.2018.8521880","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2018.8521880","url":null,"abstract":"The paper proposes new MPPT Segmentation method for partial shading conditions. The proposed method is based on principle of division of the power-voltage curve into uniform segments and location of global maximum power point inside the chosen segment. In order to validate the algorithm, it was tested under different shading condition and with different PV systems. The simulation results show that the Segmentation algorithm precisely identifies the highest MPP on the power-voltage curve. The Segmentation algorithm was compared with standard P&O and also with other MPPT algorithms for partial shading conditions. This comparison showed that Segmentation algorithm provides better results and insures higher output power of the PV system than standard P&O and also with other MPPT algorithms. Simulation results also show that Segmentation algorithm works faster than P&O.","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133539558","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 : 2018-08-01DOI: 10.1109/EPEPEMC.2018.8521931
Szabolcs Veréb, G. G. Balázs, Tamás Kokénycsi, Z. Sütő, I. Varjasi
Multi-cell lithium-ion batteries must be balanced in order to avoid severe cell charge imbalances, which reduce the apparent capacity of the battery pack. Nowadays active balancing methods are gaining popularity in spite of having potential to result in less beneficial outcome in certain situations. In this paper a balancing design selection guide will be presented in an application oriented way. The importance of proper balancing strategy selection will be demonstrated with an in depth simulation of different passive and active designs.
{"title":"Application Dependent Optimization of Balancing Methods for Lithium-ion Batteries","authors":"Szabolcs Veréb, G. G. Balázs, Tamás Kokénycsi, Z. Sütő, I. Varjasi","doi":"10.1109/EPEPEMC.2018.8521931","DOIUrl":"https://doi.org/10.1109/EPEPEMC.2018.8521931","url":null,"abstract":"Multi-cell lithium-ion batteries must be balanced in order to avoid severe cell charge imbalances, which reduce the apparent capacity of the battery pack. Nowadays active balancing methods are gaining popularity in spite of having potential to result in less beneficial outcome in certain situations. In this paper a balancing design selection guide will be presented in an application oriented way. The importance of proper balancing strategy selection will be demonstrated with an in depth simulation of different passive and active designs.","PeriodicalId":251046,"journal":{"name":"2018 IEEE 18th International Power Electronics and Motion Control Conference (PEMC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132356592","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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