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An Optimization Design of the Moveable Ball-Shaped Coil Used for Wireless Charging 用于无线充电的可移动球形线圈的优化设计
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590426
Yang Yang, Wenjie Chen, Liyu Dai, Rui Wang, Mohamad Abou Houran
{"title":"An Optimization Design of the Moveable Ball-Shaped Coil Used for Wireless Charging","authors":"Yang Yang, Wenjie Chen, Liyu Dai, Rui Wang, Mohamad Abou Houran","doi":"10.1109/PEAC.2018.8590426","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590426","url":null,"abstract":"This paper presents an optimal design of the moveable ball-shaped transmitting coil used for wireless charging. Firstly, the mathematical model of mutual inductance calculation is established. Based on this model, the rates of changes of 9 kinds of coils windings’ mutual inductance are compared and the optimal design of the coils is selected by using the Maxwell (2D) simulation. Secondly, the topology of the wireless power transfer system is designed and simulated in the Matlab. Finally, an experimental platform is built and the results are compared with those of the theoretical calculation and simulation to verify that the proposed wireless power transfer system is feasible.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"281 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123429326","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
Electrical Analysis and Design on Superconductor Magnet High Power AC/DC Converter 超导磁体大功率交/直流变换器的电学分析与设计
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590396
Zhongma Wang, Liansheng Huang, P. Fu, Z. Song, Hua Li, Shusheng Wang, Kun Wang, W. Tong
{"title":"Electrical Analysis and Design on Superconductor Magnet High Power AC/DC Converter","authors":"Zhongma Wang, Liansheng Huang, P. Fu, Z. Song, Hua Li, Shusheng Wang, Kun Wang, W. Tong","doi":"10.1109/PEAC.2018.8590396","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590396","url":null,"abstract":"Electrical devices (thyristor and fuse) is a key element of superconductor magnet high power AC/DC converter and their performance are the reliable guarantee for the converter. In this paper, the worst current surge that is the most important factor of electrical device selection confirmed by the short circuit fault of converter, First. Secondly, the steady and transient junction temperature are simulated of three kinds of thyristors by MATLAB and PSCAD based on the rated condition and short circuit fault condition to determine the thyristor type and parallel number. Then, the fuse type is selected to match the selected thyristor by overcurrent and overvoltage analysis. Lastly, both of the reliability of the selected thyristor and fuse are verified by surge current I2t analysis.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123516178","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
Loss Comparison of Two Bidirectional Isolated DC/DC Converters for Reversible Solid Oxide Fuel Cell Systems 可逆固体氧化物燃料电池系统两种双向隔离DC/DC变换器的损耗比较
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590249
K. Wei, Qu Ke-qing, Linpeng Xiang, S. Kai, Mu Shujun, Zhou You
{"title":"Loss Comparison of Two Bidirectional Isolated DC/DC Converters for Reversible Solid Oxide Fuel Cell Systems","authors":"K. Wei, Qu Ke-qing, Linpeng Xiang, S. Kai, Mu Shujun, Zhou You","doi":"10.1109/PEAC.2018.8590249","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590249","url":null,"abstract":"The reversible solid oxide fuel cell (RSOFC) is a promising solution for future storage system in power grid, but the wide voltage range makes it difficult to design the DC/DC converter for RSOFC stack. In this paper, the losses of two DC/DC topologies, CLLC cascade interleaved Buck(two-stage) converter and dual-active-bridge(DAB) converter, are compared as the interface DC/DC converter for RSOFC. Firstly, the topology and control method is introduced for two selected DC/DC converters. Secondly, the losses of two converters are analyzed and corresponding loss models are presented. The loss models are also extended for multi-port topology. At last based on 1kW single port prototype, the experiments are conducted and the total loss are measured for two topologies. Both the model and experimental results indicate that the two-stage topology has higher efficiency and is selected for the interface DC/DC converter for RSOFC stack.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125259323","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
A New Energy Management Method for High Power Density Boost Cascaded Buck-Boost PFC Converter 高功率密度升压级联Buck-Boost PFC变换器的能量管理新方法
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590559
Chao Zhang, Xin Yin, Sai Tang, Daming Wang, Ruqiang Zhen, Z. Shen, Jun Wang
{"title":"A New Energy Management Method for High Power Density Boost Cascaded Buck-Boost PFC Converter","authors":"Chao Zhang, Xin Yin, Sai Tang, Daming Wang, Ruqiang Zhen, Z. Shen, Jun Wang","doi":"10.1109/PEAC.2018.8590559","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590559","url":null,"abstract":"This paper proposes a new energy management method using the internal capacitor for energy buffer in the boost cascaded buck-boost (BoCBB) power factor correction (PFC) converter. The theory and existing shortcoming of the conventional PFC are first analyzed. A new energy management method realized by model predictive control (MPC) is proposed to maximize the benefit of the internal capacitor with a considerably reduced capacitance. A 500W PFC is used as a case study. It is found that the energy management method offers more effective control of the output voltage and input current with a much-reduced capacitance. Experimental results validate the proposed concept on a GaN FET based BoCBB PFC prototype.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125481091","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: 3
Harmonic Balance Methods used in Power Electronics and Distributed Energy System 电力电子与分布式能源系统中的谐波平衡方法
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590473
Junwei Lu
{"title":"Harmonic Balance Methods used in Power Electronics and Distributed Energy System","authors":"Junwei Lu","doi":"10.1109/PEAC.2018.8590473","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590473","url":null,"abstract":"Harmonic distortion is mainly caused by non-linear loads and power electronics used in current electrical power system and Microgrids. The presence of non-linear loads, power electronics and the increasing number of distributed energy resource (DER) units in electrical grids contribute to changing the characteristics of voltage and current waveforms in current power systems. This paper proposes an accurate and effective harmonic analysis method: Harmonic Balance Method (HBM) for power electronics and distributed energy system. The HBM can calculate all forms of harmonics generated from nonlinear load including power electronics and inductive load, and saturated or DC biased transformers; therefore it can provide accurate prediction of harmonic components for the harmonic control and active power filter (APF).","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125527398","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
An LLC Converter Operating in Super-Wide Output Voltage Range with Variable-Mode Control Strategy 基于变模控制策略的超宽输出电压范围LLC变换器
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590324
Xiaoyan Wu, Z. Bai, Hao Ma
{"title":"An LLC Converter Operating in Super-Wide Output Voltage Range with Variable-Mode Control Strategy","authors":"Xiaoyan Wu, Z. Bai, Hao Ma","doi":"10.1109/PEAC.2018.8590324","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590324","url":null,"abstract":"This paper designs an LLC converter with super-wide output voltage. A variable-mode control strategy with three operating modes is adopted for the converter, and a novel optimal parameters design method based on this strategy is proposed. The designed converter can achieve a super-wide output voltage range at various load without increasing circuit’s complexity, expanding the operating frequency and phase-shifted range. The magnetizing inductance is maximized to decrease magnetizing and conduction losses on condition that the requirements of wide gain and primary MOSFETs’ soft-switching are met, so the converter can maintain a high efficiency within the entire output voltage range. Finally, a 2.5kW experimental prototype with output voltage ranging from 25V to 150V is set up, by which the effectiveness of the strategy and the design method are proved.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115031888","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: 5
Model Predictive Rotor Current Control for Doubly Fed Induction Generators under Unbalanced Grid Voltages 电网电压不平衡条件下双馈感应发电机转子电流模型预测控制
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590608
Yongchang Zhang, Jian Jiao
{"title":"Model Predictive Rotor Current Control for Doubly Fed Induction Generators under Unbalanced Grid Voltages","authors":"Yongchang Zhang, Jian Jiao","doi":"10.1109/PEAC.2018.8590608","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590608","url":null,"abstract":"Under unbalanced grid condition, if negative sequence component of the grid voltage is not considered in the running system of doubly fed induction generator (DFIG), highly distorted stator currents and rotor currents will be produced. A new rotor current reference value is deduced in this paper. By analyzing the relationship between power reference and rotor currents, the reference value of rotor currents can be easily calculated without phase-locked loop (PLL). One kind of predictive current control based on the mathematical model of DFIG is proposed to directly control rotor current without any tuning work. After obtaining the analytical differentiation of the rotor currents, the reference rotor voltage is then deduced and synthesized by space vector modulation (SVM). Different from the conventional deadbeat power control with SVM (DPCSVM), all the three phase rotor currents in this method are sinusoidal and balanced when DFIG runs at unbalanced network. All simulation results for a 1.5 kW DFIG are presented to show the availability of proposed algorithm.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115062524","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: 3
A Modified One Cycle Control of VIENNA Rectifier for Neutral Point Voltage Balancing Control Based on Cycle-by-cycle Correction 基于逐周期校正的维也纳整流器中性点电压平衡控制改进单周期控制
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590331
Hong Cheng, Yue Ma, Cong Wang
{"title":"A Modified One Cycle Control of VIENNA Rectifier for Neutral Point Voltage Balancing Control Based on Cycle-by-cycle Correction","authors":"Hong Cheng, Yue Ma, Cong Wang","doi":"10.1109/PEAC.2018.8590331","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590331","url":null,"abstract":"This paper presents a modified one cycle control (OCC) for VIENNA rectifier to balance neutral point (NP) voltage and suppress its oscillation by introducing the concept of redundant vector in space vector pulse width modulation (SVPWM) into OCC. By changing the phase of the drive signals, an additional switching state is introduced to minimize the average neutral current over a switching cycle and it can be proved that the additional switching state does not introduce additional harmonics to AC circuit by analysis the inductance voltage of the OCC-based VIENNA rectifier. Unlike SVPWM, all the calculations require only three-phase currents and capacitance voltages as parameters and it can be achieved in abc coordinate system, so that the proposed control strategy can be easily implemented by a digital controller without complex calculations. The feasibility and performance of the modified OCC strategy has been validated by simulations in MATLAB/Simulink and experimental results.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122440927","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
Modeling of D-Q Small-Signal Impedance of Virtual Synchronous Generator 虚拟同步发电机D-Q小信号阻抗建模
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590285
Shike Wang, Zeng Liu, Jinjun Liu
{"title":"Modeling of D-Q Small-Signal Impedance of Virtual Synchronous Generator","authors":"Shike Wang, Zeng Liu, Jinjun Liu","doi":"10.1109/PEAC.2018.8590285","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590285","url":null,"abstract":"Virtual synchronous generators (VSGs) are widely employed as power sources in three-phase AC power electronic system. In order to analyze the small-signal stability of VSG, it is imperative to construct its analytical model. However, the impedance-based small-signal modeling issue of VSG is seldom discussed in existing works. To fill this gap, this paper conducts a full analytical model for the dq- frame small-signal output impedance of VSG, considering the dynamics of droop mechanism and virtual inertia. The small-signal model of power stage, external power control loop and internal voltage and current controllers are derived successively. Then, the accuracy of the analytical model is validated by measurement results in SABER. Based on the generalized Nyquist Criterion (CNC), the stability of VSG working in grid-connected mode is analyzed using this proposed impedance model. Finally, simulation results verify the analysis.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"212 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122531669","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: 13
Simplified Junction Temperature Estimation using Integrated NTC Sensor for SiC Modules 用集成NTC传感器简化SiC模块结温估计
2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) Pub Date : 2018-11-01 DOI: 10.1109/PEAC.2018.8590234
Ping Liu, Xing Zhang, Shu-hu Yin, Chunming Tu, Shoudao Huang
{"title":"Simplified Junction Temperature Estimation using Integrated NTC Sensor for SiC Modules","authors":"Ping Liu, Xing Zhang, Shu-hu Yin, Chunming Tu, Shoudao Huang","doi":"10.1109/PEAC.2018.8590234","DOIUrl":"https://doi.org/10.1109/PEAC.2018.8590234","url":null,"abstract":"Silicon Carbide (SiC) power MOSFETs have the potential to be adopted in high reliability applications, for example automotive, aerospace and military. Estimating or measuring the junction temperature of the power module is an emerging technology for thermal management control, condition monitoring, and lifetime estimation. This paper present a simply thermal model to estimate the junction temperature for SiC modules, which uses integrated negative thermal coefficient (NTC) thermistor. Firstly, a simplified thermal model is established to precisely express the thermal impedance between the chip and the integrated NTC. Then the junction temperature of the module is online estimated based on the obtained thermal model and NTC sensor reading. The effectiveness of the proposed thermal model is verified by simulation and experimental results.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123032312","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: 12
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