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Stable Power Supply Method for Household Appliances via Virtual Synchronous Generator in Single-Phase Three-Wire Microgrid 基于虚拟同步发电机的单相三线微电网家用电器稳定供电方法
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507916
Y. Hirase, H. Nakagawa, E. Yoshimura, Shogo Katsura, Kensho Abe, O. Noro, K. Sugimoto, K. Sakimoto
{"title":"Stable Power Supply Method for Household Appliances via Virtual Synchronous Generator in Single-Phase Three-Wire Microgrid","authors":"Y. Hirase, H. Nakagawa, E. Yoshimura, Shogo Katsura, Kensho Abe, O. Noro, K. Sugimoto, K. Sakimoto","doi":"10.23919/IPEC.2018.8507916","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507916","url":null,"abstract":"Distributed inverter-based power sources have become the main components of microgrids (MGs), and the virtual synchronous generator (VSG) concept is considered useful for improving the robustness of MGs. However, various problems such as the burden of unbalanced loads, parallel operation of multiple inverters, and harmonics of the system voltage received from household electric loads can arise when constructing an MG in an emergency using a domestic single-phase three-wire (1P3W) system. Therefore, we introduce a new VSG method for 1P3W systems to address these issues. This method is based on the previously proposed VSG methods for three-phase and single-phase two-wire systems. In this paper, we demonstrate that a small-capacity inverter with two VSGs can stably supply electrical power to 1P3W home appliances.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"87 1","pages":"767-774"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88169982","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}
引用次数: 0
Novel Isolated Bidirectional Integrated Dual Three-Phase Active Bridge (D3AB) PFC Rectifier 新型隔离双向集成双三相有源桥(D3AB) PFC整流器
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507362
F. Krismer, E. Hatipoglu, J. Kolar
{"title":"Novel Isolated Bidirectional Integrated Dual Three-Phase Active Bridge (D3AB) PFC Rectifier","authors":"F. Krismer, E. Hatipoglu, J. Kolar","doi":"10.23919/IPEC.2018.8507362","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507362","url":null,"abstract":"This Paper proposes a novel Dual Three-Phase Active Bridge (D3AB) PFC rectifier topology for a 400 V dc distribution system, which features galvanic isolation, bidirectional power conversion capability, a high level of component integration, and can be dimensioned with respect to high efficiency. In the course of a comprehensive and in-depth analytical investigation, the working principle of the D3AB PFC rectifier is described in order to enable converter modelling and the derivation of mathematical expressions and limitations needed for converter design and optimization. The developed converter models are verified by means of circuit simulations. An overall optimization of a system with 400 V line-to-line input voltage, 400 V dc output, and Pout = 8 kW rated power with respect to efficiency and power density reveals the feasibility of a full-load efficiency of 98.1% and a power density of 4 kW/dm3 if SiC MOSFETs are used. The finally presented design is found to achieve efficiencies greater than 98 % for Pout > 1.7 kW.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"2 1","pages":"3805-3812"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75990968","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}
引用次数: 14
Modelling and Design of a Medium Frequency Transformer for High Power DC-DC Converters 大功率DC-DC变换器中频变压器的建模与设计
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507864
M. Stojadinović, J. Biela
{"title":"Modelling and Design of a Medium Frequency Transformer for High Power DC-DC Converters","authors":"M. Stojadinović, J. Biela","doi":"10.23919/IPEC.2018.8507864","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507864","url":null,"abstract":"Dual Active Bridge (DAB) converters are an interesting solution for battery interfaces in storage systems for traction applications. Due to the environmental conditions and space limitations, the design of the transformer and cooling system is crucial for achieving a high power density. Therefore in this paper a detailed design of a transformer with integrated liquid cooling structure and high isolation voltage is presented. Analytical models for the design are presented and verified with FEM simulations and measurements on a prototype system.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"42 1","pages":"1103-1110"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76012283","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}
引用次数: 16
High-speed Slotless Permanent Magnet Machines: modelling and design frameworks 高速无槽永磁电机:建模和设计框架
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507812
S. Jumayev, K. O. Boynov, E. Lomonova, J. Pyrhonen
{"title":"High-speed Slotless Permanent Magnet Machines: modelling and design frameworks","authors":"S. Jumayev, K. O. Boynov, E. Lomonova, J. Pyrhonen","doi":"10.23919/IPEC.2018.8507812","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507812","url":null,"abstract":"This paper presents a design framework for high-speed slotless permanent magnet machines based on extended harmonic modeling (HM) technique to predict various electromagnetic properties and torque distribution. The developed models for generic design framework are able to evaluate slotless PM machines’ topologies with a wide range of 3D slotless windings, (including those with skewing), and can be also used for future design optimization routines.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"32 1","pages":"161-168"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88646433","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}
引用次数: 6
Frequency Response Analysis of Load Effect on Dynamics of Grid-Forming Inverter 负载对成网逆变器动力学影响的频响分析
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507820
M. Berg, T. Messo, T. Suntio
{"title":"Frequency Response Analysis of Load Effect on Dynamics of Grid-Forming Inverter","authors":"M. Berg, T. Messo, T. Suntio","doi":"10.23919/IPEC.2018.8507820","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507820","url":null,"abstract":"The grid-forming mode of the voltage source inverters (VSI) is applied in uninterruptible power supplies and micro-grids to improve the reliability of electricity distribution. During the intentional islanding of an inverter-based micro-grid, the grid-forming inverters (GFI) are responsible for voltage control, similarly as in the case of uninterruptible power supplies (UPS). The unterminated model of GFI can be developed by considering the load as an ideal current sink. Thus, the load impedance always affects the dynamic behavior of the GFI. This paper proposes a method, to analyze how the dynamics of GFI and the controller design are affected by the load. Particularly, how the frequency response of the voltage loop gain changes according to the load and, how it can be used to the predict time-domain step response. The frequency responses that are measured from a hardware-in-the-loop simulator are used to verify and illustrate explicitly the load effect.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"34 1","pages":"963-970"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77754202","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}
引用次数: 4
An Alternative Method to Accurately Determine the Thermal Resistance of SiC MOSFET Structures with Discrete Diodes 用分立二极管精确测定SiC MOSFET结构热阻的另一种方法
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507995
A. Vass-Várnai, Youngmin Cho, G. Farkas, M. Rencz
{"title":"An Alternative Method to Accurately Determine the Thermal Resistance of SiC MOSFET Structures with Discrete Diodes","authors":"A. Vass-Várnai, Youngmin Cho, G. Farkas, M. Rencz","doi":"10.23919/IPEC.2018.8507995","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507995","url":null,"abstract":"To determine the thermal properties of power semiconductor devices and structures, the JEDEC JESD 51-1 static, electrical test method is a well-known and industry-wide accepted technique. The approach provides accurate and repeatable results in case of silicon based transistors in all cases. For certain compound semiconductor components, such as SiC MOSFET-s and GaN HEMT structures, the application of the electrical test method becomes in some cases challenging. If traditional test setups are used, in the unit step response function, due to parasitic effects, an electric signal may superpose on the thermal signal of interest, making it hard or even impossible to analyze the test results. If the structure has a physical diode as well, it can be used to understand the thermal properties of the package and its layers. This information can be applied in another step to gather the thermal properties from die transistors’ point of view as well, without measuring it. In this article we show a combined measurement and simulation based method, which allows the accurate thermal characterization of such components, even in cases when other approaches may fail.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"1 1","pages":"137-141"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91317886","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}
引用次数: 1
Torque Ripple Minimization Control of SRM Based on Novel Motor Model Considering Mutual Coupling Effect 考虑互耦效应的新型电机模型SRM转矩脉动最小化控制
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507656
Sungyong Shin, Naruse Hikaru, T. Kosaka, N. Matsui
{"title":"Torque Ripple Minimization Control of SRM Based on Novel Motor Model Considering Mutual Coupling Effect","authors":"Sungyong Shin, Naruse Hikaru, T. Kosaka, N. Matsui","doi":"10.23919/IPEC.2018.8507656","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507656","url":null,"abstract":"In order to minimize torque ripple in switched reluctance motor (SRM), many kinds of methods have been proposed. One of them is current profile tracking control based on a motor model, torque-position-current model, which can be derived from magnetizing curves. However, the current profile tracking control has a problem which is an increase in torque ripple at the current overlapping region under high load condition. In this paper, through magnetic analyses using 2D-FEA and mathematical analyses regarding 4-phase 8/6 SRM, the reason of the increase in torque ripple is revealed and a novel torque- position-current model taking mutual coupling effect into account is proposed for better torque ripple minimization control.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"72 9 1","pages":"3418-3425"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90258726","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}
引用次数: 2
Modulation and Active Midpoint Control of a Three-Level Three-Phase Dual-Active Bridge DC-DC Converter under Non-Symmetrical Load 非对称负载下三电平三相双有源桥式DC-DC变换器的调制与有源中点控制
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507930
Philipp Joebges, A. Gorodnichev, R. D. De Doncker
{"title":"Modulation and Active Midpoint Control of a Three-Level Three-Phase Dual-Active Bridge DC-DC Converter under Non-Symmetrical Load","authors":"Philipp Joebges, A. Gorodnichev, R. D. De Doncker","doi":"10.23919/IPEC.2018.8507930","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507930","url":null,"abstract":"This paper discusses the operation of a three-phase three-level dual-active bridge (3L-DAB3) dc-dc converter in medium-voltage dc (MVDC) grids with a symmetrical monopole configuration. Due to the demand of bipolar mode operation, active control of the midpoint potential is essential to ensure balanced grid voltages even under non-symmetrical loads. The proposed solution is achieved with a novel modulation scheme, which allows a power and midpoint control to enable voltage balancing. Due to the large number of degrees of freedom, look-up tables (LUTs) are generated and used to operate with a maximum converter efficiency. The proposed method is implemented and validated in simulations and on a low-power prototype setup.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"15 1","pages":"375-382"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90674237","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}
引用次数: 7
Accurate Impedance Model of Grid-Connected Inverter for Small-Signal Stability Assessment in High-Impedance Grids 用于高阻抗电网小信号稳定性评估的并网逆变器精确阻抗模型
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507573
T. Messo, R. Luhtala, A. Aapro, T. Roinila
{"title":"Accurate Impedance Model of Grid-Connected Inverter for Small-Signal Stability Assessment in High-Impedance Grids","authors":"T. Messo, R. Luhtala, A. Aapro, T. Roinila","doi":"10.23919/IPEC.2018.8507573","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507573","url":null,"abstract":"Power quality problems caused by grid-connected renewable energy inverters have been reported in recent literature. Excessive harmonics and interharmonics may arise when the inverter starts to interact with the grid impedance. Small-signal impedance models have been proven to be useful tools to analyze the stability margins. However, most often the grid voltage feedforward loop employed by the inverter is not included in impedance-based analysis. To fill this gap, this paper presents an impedance model, which includes the effect of feedforward, to analyze impedance-based stability in the presence of large grid impedance. The model is verified by impedance measurements from a laboratory prototype. The model is shown to give accurate prediction of small-signal stability when the Nyquist stability-criterion is applied. Thus, the model can be used to re-shape the inverter impedance to avoid stability problems. The developed impedance model will also provide a useful tool to monitor stability margins online, which necessitates adaptive impedance-shaping of grid-connected inverters.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"15 1","pages":"3156-3163"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82321553","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}
引用次数: 25
Transient Stability Impact of the Phase-Locked Loop on Grid-Connected Voltage Source Converters 锁相环对并网电压源变换器暂态稳定性的影响
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia) Pub Date : 2018-05-20 DOI: 10.23919/IPEC.2018.8507447
Heng Wu, Xiongfei Wang
{"title":"Transient Stability Impact of the Phase-Locked Loop on Grid-Connected Voltage Source Converters","authors":"Heng Wu, Xiongfei Wang","doi":"10.23919/IPEC.2018.8507447","DOIUrl":"https://doi.org/10.23919/IPEC.2018.8507447","url":null,"abstract":"The phase-locked loop (PLL) is widely used in the grid-connected voltage source converter (VSC) for the purpose of grid synchronization. The impact of the PLL on the small-signal stability of VSC has recently been revealed, yet its influence on the transient stability of the VSC has seldom been addressed. This paper thus presents a comprehensive analysis on the transient stability effect of the PLL. It points out that the conventional equal-area criterion (EAC), which is used to analyze the transient stability of the synchronous generator (SG), cannot be extended to analyze the PLL effect, even though a dynamic analogy between the PLL and the swing equation of the SG can be found. The phase portrait is thus used in this work, and it shows that the long settling time and a high damping ratio of the PLL can enhance the transient stability of the VSC. Finally, the experimental tests are performed to verify the effectiveness of the theoretical analysis.","PeriodicalId":6610,"journal":{"name":"2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia)","volume":"13 1","pages":"2673-2680"},"PeriodicalIF":0.0,"publicationDate":"2018-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89737498","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}
引用次数: 47
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