Pub Date : 2016-09-01DOI: 10.1109/EPE.2016.7695283
Sven Luthardt, Stefan Schmitz, A. Heitmann, D. Gerling
In this paper an improved method for designing electric propulsion systems consisting of e-machine and inverter, based on a co-simulation, is presented. As the mandated emission limits of vehicles are expected to become stricter, advanced design methods are necessary to calculate accurate losses of machine and inverter. The approach contains the influence of inverter effects with acceptable calculation time by using a weak coupling of the drivetrain components. First simulation results are presented.
{"title":"Improved electric drive analysis methodology for electrical vehicle propulsion","authors":"Sven Luthardt, Stefan Schmitz, A. Heitmann, D. Gerling","doi":"10.1109/EPE.2016.7695283","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695283","url":null,"abstract":"In this paper an improved method for designing electric propulsion systems consisting of e-machine and inverter, based on a co-simulation, is presented. As the mandated emission limits of vehicles are expected to become stricter, advanced design methods are necessary to calculate accurate losses of machine and inverter. The approach contains the influence of inverter effects with acceptable calculation time by using a weak coupling of the drivetrain components. First simulation results are presented.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124955340","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695360
A. Aapro, T. Messo, T. Suntio
LCL-filter is commonly used as an output-side filter in a grid-connected converter due to its good attenuation capability at the switching harmonic frequencies. LCL-filter creates several resonances in the converter dynamics which shall be damped for ensuring robust performance of the converter. The resonant behavior introduced by the LCL-filter can be attenuated with active damping (AD) instead of passive damping to improve the conversion efficiency. The active damping affects the output impedance of the converter, and the impedance should be accurately predicted in order to allow analyzing impedance-based stability of power electronics-based power systems. This paper presents the small-signal model for inverter-current-feedback (ICF) converter using only the inverter-side inductor current feedback for both control and active damping. Additionally, the output impedance properties are comprehensively analyzed. Experimental measurements from 3-kW prototype are presented to verify the analysis.
{"title":"Effect of single-current-feedback active damping on the output impedance of grid-connected inverter","authors":"A. Aapro, T. Messo, T. Suntio","doi":"10.1109/EPE.2016.7695360","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695360","url":null,"abstract":"LCL-filter is commonly used as an output-side filter in a grid-connected converter due to its good attenuation capability at the switching harmonic frequencies. LCL-filter creates several resonances in the converter dynamics which shall be damped for ensuring robust performance of the converter. The resonant behavior introduced by the LCL-filter can be attenuated with active damping (AD) instead of passive damping to improve the conversion efficiency. The active damping affects the output impedance of the converter, and the impedance should be accurately predicted in order to allow analyzing impedance-based stability of power electronics-based power systems. This paper presents the small-signal model for inverter-current-feedback (ICF) converter using only the inverter-side inductor current feedback for both control and active damping. Additionally, the output impedance properties are comprehensively analyzed. Experimental measurements from 3-kW prototype are presented to verify the analysis.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126180987","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695625
R. Barrera-Cardenas, T. Isobe, M. Molinas
This paper presents a meta-parameterised approach for evaluation of power switch modules (PSMs) in high power converters (HPCs). General models and parameters for evaluation of power losses and volume of PSMs are presented. Then, meta-parameterisation is performed for the High Power Semiconductor Devices (HPSDs) that are commonly used in HPCs, considering two types of package, press-pack and module type, and including IGBT, IGCT and IEGT chip technologies. A comparative analysis based on current capability and its dependency with the frequency in voltage source converters is introduced for the considered HPSD technologies. Press-pack IGBT technology shows the higher current capability and power dissipation performance, so it can be good choice for increase the operative frequency in HPCs.
{"title":"Meta-parameterisation of power semiconductor devices for studies of efficiency and power density in high power converters","authors":"R. Barrera-Cardenas, T. Isobe, M. Molinas","doi":"10.1109/EPE.2016.7695625","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695625","url":null,"abstract":"This paper presents a meta-parameterised approach for evaluation of power switch modules (PSMs) in high power converters (HPCs). General models and parameters for evaluation of power losses and volume of PSMs are presented. Then, meta-parameterisation is performed for the High Power Semiconductor Devices (HPSDs) that are commonly used in HPCs, considering two types of package, press-pack and module type, and including IGBT, IGCT and IEGT chip technologies. A comparative analysis based on current capability and its dependency with the frequency in voltage source converters is introduced for the considered HPSD technologies. Press-pack IGBT technology shows the higher current capability and power dissipation performance, so it can be good choice for increase the operative frequency in HPCs.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123263394","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695607
E. Waffenschmidt, R. Hui
Soon, virtual inertia for grid control must be covered by photovoltaic inverters. It is suggested to use DC link capacitors for this task. This requires 5 W, 50 J and a capacitor size of about 200 cm3 per installed kW, corresponding to the size of single phase DC link capacitors. It is shown that the additional power ripple (and thus current ripple) is in the order of 0.1% and the voltage ripple of the intermediate voltage will typically remain between +/-3.6%. The related control can be easily extended by adding a voltage signal to the control voltage, which is proportional to the frequency deviation. Then, the existing controller inherently sets the required additional power fluctuation required for the virtual inertia function.
{"title":"Virtual inertia with PV inverters using DC-link capacitors","authors":"E. Waffenschmidt, R. Hui","doi":"10.1109/EPE.2016.7695607","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695607","url":null,"abstract":"Soon, virtual inertia for grid control must be covered by photovoltaic inverters. It is suggested to use DC link capacitors for this task. This requires 5 W, 50 J and a capacitor size of about 200 cm3 per installed kW, corresponding to the size of single phase DC link capacitors. It is shown that the additional power ripple (and thus current ripple) is in the order of 0.1% and the voltage ripple of the intermediate voltage will typically remain between +/-3.6%. The related control can be easily extended by adding a voltage signal to the control voltage, which is proportional to the frequency deviation. Then, the existing controller inherently sets the required additional power fluctuation required for the virtual inertia function.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125559299","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695371
Tobias Kauder, K. Hameyer
This paper presents an analysis of different structured ferromagnetic materials for medium frequency applications. Metrological characteristics are performed at standardized instruments made by Brockhaus, i.e., Epstein frames and ring coil testing module. The final application is a transformer core used in a galvanically isolated phase-shifted dc-dc converter. The efficiency of a dual-active-bridge (DAB3) DC-DC converter is influenced, among others, by the iron losses of the medium frequency transformer. The iron losses of grain-oriented SiFe, non-oriented SiFe and nanocrystalline materials are measured at medium frequencies up to several kilohertz under sinusoidal excitation. The IEM-5-Parameter iron loss formula, which is based on semi-physical parameters, is used to evaluate the material characteristics. In addition, the excitation signal is adapted to the DAB3 application. The signal is examined by using a fast Fourier transform. The semi-physical iron loss separation model is adapted to consider the occurring harmonics in polarization.
{"title":"Iron loss comparison of standard SiFe and nanocrystalline materials for power transformers in a dual active bridge converter","authors":"Tobias Kauder, K. Hameyer","doi":"10.1109/EPE.2016.7695371","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695371","url":null,"abstract":"This paper presents an analysis of different structured ferromagnetic materials for medium frequency applications. Metrological characteristics are performed at standardized instruments made by Brockhaus, i.e., Epstein frames and ring coil testing module. The final application is a transformer core used in a galvanically isolated phase-shifted dc-dc converter. The efficiency of a dual-active-bridge (DAB3) DC-DC converter is influenced, among others, by the iron losses of the medium frequency transformer. The iron losses of grain-oriented SiFe, non-oriented SiFe and nanocrystalline materials are measured at medium frequencies up to several kilohertz under sinusoidal excitation. The IEM-5-Parameter iron loss formula, which is based on semi-physical parameters, is used to evaluate the material characteristics. In addition, the excitation signal is adapted to the DAB3 application. The signal is examined by using a fast Fourier transform. The semi-physical iron loss separation model is adapted to consider the occurring harmonics in polarization.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126972835","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695304
B. Wunsch, D. Zhelev, B. Oedegard
We designed an auxiliary power supply for medium voltage MMC-converters with system voltages up to 36 kVrms. The system supplies up to 250 W power and is based on a two-stage design. The first stage is an inductive power transfer system that isolates against the system voltage. It is connected to a low voltage DC-supply on ground potential, and shows DC-DC efficiency between 90-95%. Two distinct insulation concepts for the coupled coil design have been designed and passed partial discharge tests. The second stage supplies the various gate and control units of each MMC power cell. Its insulation requirement is given by the cell voltage. Functional and insulation tests as well as a sensitivity analysis are included. The full auxiliary power supply shows an efficiency of 86%.
{"title":"Externally-fed auxiliary power supply of MMC converter cells","authors":"B. Wunsch, D. Zhelev, B. Oedegard","doi":"10.1109/EPE.2016.7695304","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695304","url":null,"abstract":"We designed an auxiliary power supply for medium voltage MMC-converters with system voltages up to 36 kVrms. The system supplies up to 250 W power and is based on a two-stage design. The first stage is an inductive power transfer system that isolates against the system voltage. It is connected to a low voltage DC-supply on ground potential, and shows DC-DC efficiency between 90-95%. Two distinct insulation concepts for the coupled coil design have been designed and passed partial discharge tests. The second stage supplies the various gate and control units of each MMC power cell. Its insulation requirement is given by the cell voltage. Functional and insulation tests as well as a sensitivity analysis are included. The full auxiliary power supply shows an efficiency of 86%.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115032925","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695485
Manuel Brose, Christian Duerkop, T. Schulte
Modular power inverter systems for auxiliary drives in utility vehicles can meet various different customer requirements. A model based approach can be used for validating the thermal design of those systems in any suitable modular configuration. This contribution is focused on an equivalent lumped thermal network model for a modular inverter system on a given heat sink concept. The proposed network representation is based on spatial splitting of the heat sink geometry whereby the lumped network elements are parametrized by means of the heat sink geometry. Since the proposed network is easy and straightforward, a minimum of variables are introduced to adjust the temperature results empirically with FEM results on certain reference operation points. Furthermore, modularity is considered due to the coolant and therefore, customer specific placement of modules can be investigated. Finally, the proposed model is compared with FEM results of a worst case system configuration, the influence of the introduced adjustment variables is shown and further validation results with thermal measurements and FEM results of different system configurations are given.
{"title":"Model based thermal evaluation of a modular power inverter system","authors":"Manuel Brose, Christian Duerkop, T. Schulte","doi":"10.1109/EPE.2016.7695485","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695485","url":null,"abstract":"Modular power inverter systems for auxiliary drives in utility vehicles can meet various different customer requirements. A model based approach can be used for validating the thermal design of those systems in any suitable modular configuration. This contribution is focused on an equivalent lumped thermal network model for a modular inverter system on a given heat sink concept. The proposed network representation is based on spatial splitting of the heat sink geometry whereby the lumped network elements are parametrized by means of the heat sink geometry. Since the proposed network is easy and straightforward, a minimum of variables are introduced to adjust the temperature results empirically with FEM results on certain reference operation points. Furthermore, modularity is considered due to the coolant and therefore, customer specific placement of modules can be investigated. Finally, the proposed model is compared with FEM results of a worst case system configuration, the influence of the introduced adjustment variables is shown and further validation results with thermal measurements and FEM results of different system configurations are given.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122310469","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695434
I. Jahn, C. Townsend, H. Z. de la Parra
This paper analyses new model-predictive modulation strategies applied to hybrid Silicon Silicon-Carbide cascaded H-bridge (CHB) converters. The analysis identifies a suitable ratio of Silicon to Silicon-Carbide cells and the appropriate modulation strategy applied to this topology concept. The evaluation is based on semiconductor losses and harmonic performance.
{"title":"Model-predictive modulation strategy for a hybrid Si-SiC cascaded H-bridge multi-level converter","authors":"I. Jahn, C. Townsend, H. Z. de la Parra","doi":"10.1109/EPE.2016.7695434","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695434","url":null,"abstract":"This paper analyses new model-predictive modulation strategies applied to hybrid Silicon Silicon-Carbide cascaded H-bridge (CHB) converters. The analysis identifies a suitable ratio of Silicon to Silicon-Carbide cells and the appropriate modulation strategy applied to this topology concept. The evaluation is based on semiconductor losses and harmonic performance.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122415530","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695381
S. Haghbin
The power engineering design project course is a second-year course in electric power engineering master program in Chalmers University of Technology (CTH), Sweden. Students perform and report a pre-selected project in the electric power engineering area within a group. A drive system based on a switched reluctance motor (SRM) is developed in the context of a master thesis and the system is utilized and enhanced in this course as an educational platform. The course activities, developed hardware, project results by students, and course evaluation results are presented in this paper. During a pedagogical course titled “Writing for publication and for constructive alignment” conducted by CTH, the course supervision activities are analyzed and improved. The assessment of the students individual contribution within a group is identified as the main barrier for the further involvements of the students. Changing the course grade from a pass/fail to a fail/3/4/5 system is suggested for the next round of the course to encourage the students for more engagement within the project group.
{"title":"A SRM-based drive system for design project course in electric power engineering master program in chalmers university of technology","authors":"S. Haghbin","doi":"10.1109/EPE.2016.7695381","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695381","url":null,"abstract":"The power engineering design project course is a second-year course in electric power engineering master program in Chalmers University of Technology (CTH), Sweden. Students perform and report a pre-selected project in the electric power engineering area within a group. A drive system based on a switched reluctance motor (SRM) is developed in the context of a master thesis and the system is utilized and enhanced in this course as an educational platform. The course activities, developed hardware, project results by students, and course evaluation results are presented in this paper. During a pedagogical course titled “Writing for publication and for constructive alignment” conducted by CTH, the course supervision activities are analyzed and improved. The assessment of the students individual contribution within a group is identified as the main barrier for the further involvements of the students. Changing the course grade from a pass/fail to a fail/3/4/5 system is suggested for the next round of the course to encourage the students for more engagement within the project group.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114251992","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 : 2016-09-01DOI: 10.1109/EPE.2016.7695268
A. Sangwongwanich, L. Mathe, R. Teodorescu, C. Lascu, L. Harnefors
With the aim to solve the unbalanced thermal behavior in the modular multilevel converter, introduced by mismatch in the submodule parameters, a thermal balancing control strategy is proposed here. The proposed solution ensures a balanced junction temperature for the power devices, while the balance between the capacitor voltages is maintained.
{"title":"Two-dimension sorting and selection algorithm featuring thermal balancing control for modular multilevel converters","authors":"A. Sangwongwanich, L. Mathe, R. Teodorescu, C. Lascu, L. Harnefors","doi":"10.1109/EPE.2016.7695268","DOIUrl":"https://doi.org/10.1109/EPE.2016.7695268","url":null,"abstract":"With the aim to solve the unbalanced thermal behavior in the modular multilevel converter, introduced by mismatch in the submodule parameters, a thermal balancing control strategy is proposed here. The proposed solution ensures a balanced junction temperature for the power devices, while the balance between the capacitor voltages is maintained.","PeriodicalId":119358,"journal":{"name":"2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121902787","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：