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A Novel Driving Scheme for Inductive Power Transfer Systems Using Decoupled Transmitter Coils 一种基于解耦发射线圈的感应功率传输系统驱动方案
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9806853
K. Zhao, Minfan Fu, Guangdong Ning, Rong He, Hengzhao Yang, Hao Wang
{"title":"A Novel Driving Scheme for Inductive Power Transfer Systems Using Decoupled Transmitter Coils","authors":"K. Zhao, Minfan Fu, Guangdong Ning, Rong He, Hengzhao Yang, Hao Wang","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9806853","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9806853","url":null,"abstract":"This paper explores a novel and unsymmetri-cal driving scheme for an inductive power transfer system using decoupled transmitter (TX) coils. Instead of driving each TX in the same way, the proposed driving scheme would employ various compensations for different coils, and the power flow of each TX are closely coupled. Through circuit analysis, the proposed system would have multiple operation modes to avoid over load conditions. Meanwhile, it would maintain the benefits of a multiple-TX system like high misalignment tolerance, and enable the system design and control like a single-TX one, e.g., having load-independent output voltage. The experiment demonstrates the waveform of normal mode and protection mode, load-independent output voltage.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125401451","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
Comparative Evaluation of MVAC-LVDC SST and Hybrid Transformer Concepts for Future Datacenters 未来数据中心MVAC-LVDC SST和混合变压器概念的比较评估
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807028
J. Huber, P. Wallmeier, Ralf Pieper, F. Schafmeister, J. Kolar
{"title":"Comparative Evaluation of MVAC-LVDC SST and Hybrid Transformer Concepts for Future Datacenters","authors":"J. Huber, P. Wallmeier, Ralf Pieper, F. Schafmeister, J. Kolar","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9807028","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9807028","url":null,"abstract":"A transition from state-of-the-art 400 V AC to 690 V AC or 800 V DC (±400 V DC) distribution improves the overall power conversion efficiency of datacenter power supply systems. The latter requires megawatt-level isolated medium-voltage (MV) AC to low-voltage (LV) DC conversion stages that operate with an efficiency of at least 98 %. Whereas today's most advanced industrial MVAC-LVDC solid-state transformer (SST) prototypes do achieve this, they are highly complex and do not show any clear advantages in terms of efficiency and power density over alternative approaches that retain the low-frequency transformer (LFT) to provide isolation and decoupling from harsh MV grid realities. We thus comparatively evaluate MVAC-LVDC SSTs against such alternative concepts, i.e., LFTs with LV-side SiC PFC rectifiers, or 12-pulse rectifier systems hybridized with active filters that just provide sufficient power processing capability to achieve unity power factor operation.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125540555","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: 10
Efficiency Optimization Method for Parallel Converters in Fault-tolerant Microgrids 容错微电网并联变流器效率优化方法
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807112
Pengwei Li, A. Bazzi
{"title":"Efficiency Optimization Method for Parallel Converters in Fault-tolerant Microgrids","authors":"Pengwei Li, A. Bazzi","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9807112","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9807112","url":null,"abstract":"This paper proposes a model-based method that maximizes the efficiency of parallel converters in microgrids. Parallel converters are operated from independent sources in a healthy state but share sources when a failed converter is eliminated, to minimize curtailed power from the lost branch in a microgrid. The proposed method develops a curve-fit efficiency function based on an efficiency model of a solar panel converter. Experimental test data is used to verify the proposed rational efficiency function with the MATLAB curve fitting toolbox. The optimization method is verified in Simulink with the analytical commuting of parallel converters. System efficiency comparison verifies that the proposed method can improve aggregated converter efficiency.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"18 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116043029","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
Simulating Wide Bandgap FET Models in LTspice LTspice中宽带隙场效应管模型的仿真
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9806913
Jongwon Shin, Joonho Shin
{"title":"Simulating Wide Bandgap FET Models in LTspice","authors":"Jongwon Shin, Joonho Shin","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9806913","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9806913","url":null,"abstract":"Proper usage of FET models in simulation saves time and effort in developing power converters. This paper presents how gallium nitride or silicon carbide (SiC) FET models provided by their manufacturers are verified and utilized in LTspice XVII simulation. The simulation and experimental results of a double pulse test circuit using SiC FETs are compared to prove the preciseness and feasibility of the simulation.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116564911","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
Two-stage Battery Energy Storage Power Conversion System Based on Dual Active Bridge 基于双有源电桥的两级电池储能功率转换系统
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9806955
Liang Wang, Ning Gao, Weimin Wu
{"title":"Two-stage Battery Energy Storage Power Conversion System Based on Dual Active Bridge","authors":"Liang Wang, Ning Gao, Weimin Wu","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9806955","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9806955","url":null,"abstract":"In this paper, the basic principle and control strategy of a 110V/3kW two-stage dual-active-bridge-based battery energy storage power conversion system are introduced. The parameter design of its control loop is provided in detail. Meanwhile, a small-signal impedance model of power conversion system is established to analyze the stability under the condition of weak grid. In the end, the simulation and experimental results are given to confirm the feasibility of designed control loop and the correctness of proposed impedance model.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122754579","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
Common-Mode Voltage Mitigation for Three-Phase Hybrid NPC Inverter with Flying-Capacitor Leg 飞电容式三相混合型NPC逆变器的共模电压抑制
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807117
Xuan Zhao, Dong Jiang, Wei Sun, Jialou Gao
{"title":"Common-Mode Voltage Mitigation for Three-Phase Hybrid NPC Inverter with Flying-Capacitor Leg","authors":"Xuan Zhao, Dong Jiang, Wei Sun, Jialou Gao","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9807117","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9807117","url":null,"abstract":"The classical neutral point clamped (NPC) 3-level has been with great success in the past few decades, but is facing the problems of neutral point voltage fluctuation and common-mode voltage (CMV). This paper deals with these issues using a hybrid NPC inverter, which consists of an extra flying-capacitor (FC) leg. The FC is switching between 1010 and 0101 modes to keep the neutral point voltage and the ratio between two modes can be controlled to balance the charging current from the NPC inverter. The modulation-based strategies for common-mode voltage suppression are proposed in this paper. When the modulation ratio is less than 1, the constant CMV modulation with only medium voltage vectors and a specific zero vector can immensely reduce the CMV. When the modulation ratio is greater than 1 (<1.15), the strategy of CMV reduction will be used to attenuate the peak CMV of the inverter system. With the active switching of the FC leg, the neutral point voltage can be balanced in each switching cycle even with the new modulation in the NPC converter. Simulation and experimental results are provided to validate that the proposed strategies can achieve good performance in reductions of CMV and noise in wide modulation ratio.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"64 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114059834","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
Control and Performance of Capacitively-Isolated Bidirectional DC-DC Converter with Auxiliary Converters for Electric Railways 带辅助变流器的电气化铁路电容隔离双向DC-DC变换器的控制与性能
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9806966
Kana Matsumoto, Kazuaki Tesaki, M. Hagiwara
{"title":"Control and Performance of Capacitively-Isolated Bidirectional DC-DC Converter with Auxiliary Converters for Electric Railways","authors":"Kana Matsumoto, Kazuaki Tesaki, M. Hagiwara","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9806966","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9806966","url":null,"abstract":"This paper presents the operating principles and control methods of a capacitively-isolated bidirectional dc-dc converter with auxiliary converters, which is intended for high power applications. It consists of a main converter, two auxiliary converters, two inductors, and two isolation capacitors. The proposed converter is characterized by achieving galvanic insulation and isolation without using transformer. In addition, it can achieve robust bidirectional power-flow control using the auxiliary converters. Further, the proposed converter can eliminate dc circuit breakers from the circuit. The operating principles and control methods presented in this paper are verified by experiments using a 200-W, 75-V down-scaled model.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122134874","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
Iron Loss Properties of Amorphous Ring under High-Frequency SiC Inverter Excitation with Different Dead-times Using High Sampling Rate 高采样率下不同死区时间高频SiC逆变器励磁下非晶环的铁损特性
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807018
N. M. Thao, K. Fujisaki, Duc-Kien Ngo, Kenya Naruse
{"title":"Iron Loss Properties of Amorphous Ring under High-Frequency SiC Inverter Excitation with Different Dead-times Using High Sampling Rate","authors":"N. M. Thao, K. Fujisaki, Duc-Kien Ngo, Kenya Naruse","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9807018","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9807018","url":null,"abstract":"In recent years, amorphous materials have been used for inductor and transformer cores to improve the efficiency of high power-density converters utilizing wide-bandgap semiconductor devices. In which, issues of the iron loss in magnetic cores under different operating conditions of these converters are important and should be considered thoroughly. Therefore, this paper presents an experimental investigation of the iron loss characteristics of an amorphous ring core under the silicon carbide (SiC) inverter excitation at high carrier frequencies of up to 200 kHz using a high sampling rate of up to 5 GS/s in measurement. Effects of large changes in the dead-time and modulation index of the SiC inverter on the iron loss density of the amorphous ring are also examined. Moreover, impacts of several key factors, such as the fast-rising time in nanoseconds, ringing phenomenon occurring at megahertz frequency, total harmonic distortion (THD) of the ring's voltage, and minor B-H loops, on the increase in the iron loss density are analyzed. In addition, the iron loss properties of the amorphous ring core are compared to that of another ring core made from a non-oriented electrical steel for reference. Finally, concise physic-based insights and explanations for the main results are shown.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129621950","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
Activation Function Model for Wireless Power Transfer System With an LCC-S Compensated Network LCC-S补偿网络无线电力传输系统的激活函数模型
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807069
Shuangqing Lv, Wenjie Chen, Xiufang Hu
{"title":"Activation Function Model for Wireless Power Transfer System With an LCC-S Compensated Network","authors":"Shuangqing Lv, Wenjie Chen, Xiufang Hu","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9807069","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9807069","url":null,"abstract":"Wireless power transfer (WPT) based on power electronic devices is a nonlinear system, its large-signal model is the basis for studying the operating characteristics and stability analysis of the system. The key to modeling is how to find a unified model to represent the equivalent circuit model in all switching states in the system. In this paper, a modeling method based on sigmoid activation function is proposed to solve this problem, the switching process of the switch in the system is approximated by the activation function. An LCC-S compensated WPT system is chosen as an example and the large-signal model in continuous mode(CM) and discontinuous mode(DM) are determined, the sigmoid function model is subsequently validated through simulation and experimentation. Simulation and experimental results show the effectiveness and accuracy of the model.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129760830","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
A Five-Level Unity-Gain Active Neutral-Point-Clamped Inverter Designed Using Half-Bridges 采用半桥设计的五电平单位增益有源中性点箝位逆变器
2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia) Pub Date : 2022-05-15 DOI: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9806830
S. Lee, Y. Siwakoti, Reza Barzegarkhoo, Kyo-Beum Lee
{"title":"A Five-Level Unity-Gain Active Neutral-Point-Clamped Inverter Designed Using Half-Bridges","authors":"S. Lee, Y. Siwakoti, Reza Barzegarkhoo, Kyo-Beum Lee","doi":"10.23919/IPEC-Himeji2022-ECCE53331.2022.9806830","DOIUrl":"https://doi.org/10.23919/IPEC-Himeji2022-ECCE53331.2022.9806830","url":null,"abstract":"This paper proposes a novel 5-level active neutral-point-clamped (ANPC) inverter that doubles the voltage gain of the conventional topology from half to unity. Each phase of the proposed topology is constituted by three half-bridges that control a flying capacitor to generate 5 symmetrical ac voltage levels. Natural voltage balancing of dc-link and flying capacitors in the proposed topology implies that the sensors and voltage balancing controller commonly used in the conventional ANPC inverter is no longer necessary. In addition to switch count reduction, the most noteworthy merit of the proposed topology is its ease of implementation with commercial half-bridge modules, where the design of dedicated circuit is not needed. The operation of the proposed 5-level unity-gain ANPC (5L-VG-ANPC) inverter is analyzed and validated through simulation and experimental tests.","PeriodicalId":256507,"journal":{"name":"2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128392018","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
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