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Phase-Shift Control of Flying Capacitor Voltages in Multilevel Converters 多电平变换器中飞电容电压的相移控制
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124402
Samuel da Silva Carvalho, N. Vukadinović, A. Prodic
{"title":"Phase-Shift Control of Flying Capacitor Voltages in Multilevel Converters","authors":"Samuel da Silva Carvalho, N. Vukadinović, A. Prodic","doi":"10.1109/APEC39645.2020.9124402","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124402","url":null,"abstract":"This paper presents a new phase shift based control method for the flying capacitor voltages of multilevel converters. The new method is immune to load current variation and other stability issues that would arise when controlling the flying capacitor voltages with existing solutions. Experimental results obtained with a 12V-to-5V, 500 kHz, 15 W, 3-Level Flying Capacitor buck converter prototype are provided detailing the proposed control strategy’s behavior, and well as its efficacy under load current and input voltage variations.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129982852","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 Single-Phase Five-Level Transformerless Photovoltaic Inverter 一种单相五电平无变压器光伏逆变器
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124087
Xiaonan Zhu, Xinyue Chen, Renjie Sun, Zhenzhen Li, X. Yue, Hongliang Wang
{"title":"A Single-Phase Five-Level Transformerless Photovoltaic Inverter","authors":"Xiaonan Zhu, Xinyue Chen, Renjie Sun, Zhenzhen Li, X. Yue, Hongliang Wang","doi":"10.1109/APEC39645.2020.9124087","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124087","url":null,"abstract":"The five-level inverters are preferred solutions for medium-voltage PV applications because of lower total harmonic distortion (THD), lower switching stress and lower electromagnetic interference in contrast to two-level inverter topologies. In order to reduce the leakage current in the five-level inverter applications, a single-phase five-level transformerless inverter topology is proposed in this paper. The proposed inverter is based on an flying capacitor (FC) configuration and the voltage of FC can be balanced through the coordination of the two half-bridge within a switching period. Two bidirectional circuits are added to provide the new freewheeling paths when outputting zero voltage level. The mechanism of suppressing the leakage current is analyzed in detail with operational states and modulation strategy. A 1 kW prototype is also built and tested in the laboratory, the experimental results are finally presented to show the excellent performance in leakage current reduction.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130153307","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
Leakage Inductance Estimation of Toroidal Common-mode Choke from Perspective of Analogy between Reluctances and Capacitances 基于阻容类比的环面共模扼流圈漏感估算
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124111
Ren Ren, Zhou Dong, Bo Liu, Fred Wang
{"title":"Leakage Inductance Estimation of Toroidal Common-mode Choke from Perspective of Analogy between Reluctances and Capacitances","authors":"Ren Ren, Zhou Dong, Bo Liu, Fred Wang","doi":"10.1109/APEC39645.2020.9124111","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124111","url":null,"abstract":"To reduce the volume and weight of differential-mode (DM) inductors, the leakage inductance of a toroidal common-mode (CM) choke is ofen used as partial DM inductance. However, the accurate prediction of the leakage inductance of CM chokes through an analytical model is difficult, making the determination of remaining DM inductance difficult. This paper proposes a modeling method with the analogy between reluctances (or magnetic fields) and capacitances (or capacitive fields). The proposed method is verified by the leakage inductance comparison between the proposed model and simulation results for two CM cores with different turns numbers and wire gauges, and it demonstrated the proposed model can achieve the errors within 15% compared with simulation results for all cases.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133894757","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
Flyback Converter Control by Inner Supply Voltage Feedback Using Sigma-Delta Converter 利用σ - δ变换器的内电源电压反馈控制反激变换器
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124445
Geon-Hong Min, Jung-Ik Ha
{"title":"Flyback Converter Control by Inner Supply Voltage Feedback Using Sigma-Delta Converter","authors":"Geon-Hong Min, Jung-Ik Ha","doi":"10.1109/APEC39645.2020.9124445","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124445","url":null,"abstract":"This paper proposes a synchronous rectified flyback converter control using inner supply data transmission without optocoupler. Inner supply data transmission allows digital data to be sent from the secondary to the primary side without additional communication lines. Using this data transmission, direct voltage feedback is created without using optocoupler. In this system, inner supply data transmission is done using multiplexing mode of the flyback converter and sigma-delta converter is used to send the data in a continuous way. In order to maintain the bandwidth of the converter even in low bitrate, a dual loop control that utilizes both primary side sensing and inner supply data transmission is proposed. Here primary side sensing is used to keep the bandwidth of the controller high while data transmission is utilized to increase the accuracy of the controller. The experimental results are presented to verify the performance of the proposed system and controller.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"343 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133953276","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
Condition Monitoring of IGBT Module and Forced Air Cooling System Using Time Constants of Heat Sink Temperature Cooling Curve 基于散热器温度冷却曲线时间常数的IGBT模块和强制风冷系统状态监测
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124134
Jun Zhang, Xiong Du, Shuai Zheng
{"title":"Condition Monitoring of IGBT Module and Forced Air Cooling System Using Time Constants of Heat Sink Temperature Cooling Curve","authors":"Jun Zhang, Xiong Du, Shuai Zheng","doi":"10.1109/APEC39645.2020.9124134","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124134","url":null,"abstract":"This paper proposes a new method that uses the time constant of heat sink temperature cooling curve as an indicator to monitor the solder fatigue of insulated gate bipolar transistor (IGBT) module as well as the deterioration of the cooling system. This approach is based on the direct correspondence between a certain time constant of the heat sink temperature cooling curve and the thermal parameters of a given part of the cascaded thermal system. The aging of IGBT module and the cooling system can be monitored by detecting the variations of corresponding time constants. Experimental tests were conducted to demonstrate the effectiveness and accuracy of this technique.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134164055","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
Semi-Theoretical Prediction of Turn-off Surge Voltage in a SiC MOSFET Power Module with an Embedded DC-link Decoupling Capacitor 嵌入式直流链路去耦电容SiC MOSFET功率模块关断浪涌电压的半理论预测
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124137
T. Miyazaki, Yuta Okawauchi, H. Otake, K. Nakahara
{"title":"Semi-Theoretical Prediction of Turn-off Surge Voltage in a SiC MOSFET Power Module with an Embedded DC-link Decoupling Capacitor","authors":"T. Miyazaki, Yuta Okawauchi, H. Otake, K. Nakahara","doi":"10.1109/APEC39645.2020.9124137","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124137","url":null,"abstract":"This paper presents a semi-theoretical method for predicting the turn-off surge voltage (Vsurge) in double-pulse test (DPT) using a power module (PM) with serially-connected SiC MOSFET transistors structuring half-bridge, in which module a DC-link decoupling capacitor is also embedded. The circuit equations are simplified based on the fact that the MOSFETs act as their own parasitic capacitance, diode, or resistor having channel resistance (Rch) in their transient modes, but the drain-source voltage (Vds) dependency of the capacitances and gate-source voltage dependent Rch are taken into circuit behavior calculations. The partial element equivalent circuit (PEEC) method is used to estimate the stray inductances (Ls) of the PM. Other Ls’s are empirically obtained by impedance measurement and preliminarily performed switching waveforms. Finally, multiple Kirchhoff’s laws-based equations are simultaneously solved. This calculation process is semi-theoretical, and sufficiently predicts the Vsurge observed in DPT performed under various conditions.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131488176","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
A THD Optimization Control for High frequency Full-SiC PWM Rectifier based on Multi-resolution Algorithm 基于多分辨率算法的高频全sic PWM整流器THD优化控制
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124407
Yan Ming, Rui Zhao, Chuanhao Ji, Yuhang Zou, Y. Xing, Chenxing Sha, Baolin Chen
{"title":"A THD Optimization Control for High frequency Full-SiC PWM Rectifier based on Multi-resolution Algorithm","authors":"Yan Ming, Rui Zhao, Chuanhao Ji, Yuhang Zou, Y. Xing, Chenxing Sha, Baolin Chen","doi":"10.1109/APEC39645.2020.9124407","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124407","url":null,"abstract":"A multi-resolution control algorithm is adopted to minimize the negative effect caused by digital control delay to lower the total harmonic distortion (THD) of high frequency PWM rectifiers for aviation applications. The influence of digital control delay is analyzed first. The algorithm makes the best use of the limited digital signal processor (DSP) resources to increase the control frequency of the tasks that mainly affect the rectifier’s performance by executing the left tasks at a relatively low frequency. A 5kW prototype with full SiC devices is built to verify the effectiveness and advantages of the proposed algorithm and good experimental results have been obtained.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131766267","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
20-kW Bi-directional Wireless Power Transfer System with Energy Storage System Connectivity 20千瓦双向无线电力传输系统与储能系统连接
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124047
O. Onar, G. Su, Erdem Asa, J. Pries, V. Galigekere, L. Seiber, C. White, R. Wiles, Jonathan Wilkins
{"title":"20-kW Bi-directional Wireless Power Transfer System with Energy Storage System Connectivity","authors":"O. Onar, G. Su, Erdem Asa, J. Pries, V. Galigekere, L. Seiber, C. White, R. Wiles, Jonathan Wilkins","doi":"10.1109/APEC39645.2020.9124047","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124047","url":null,"abstract":"The severity of the economic impact caused by grid outages has been the driving factor for creating innovative solutions that increases interest for the deployment of distributed energy resources to reduce the impact of grid outages. This study presents a novel way of providing export power using bi-directional wireless power transfer (WPT) systems for ac grid side power and mobile energy storage systems (ESSs) connectivity. The proposed concept here interfaces the EV batteries to the AC grid and also can redirect the power from the stationary ESS to grid, to EV batteries, or both simultaneously; providing the capabilities of an uninterrupted power supply (UPS). Results demonstrate the performance and the functionality of the system with overall efficiencies 93% to 97%, depending on the operating mode.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130785989","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: 11
Interleaved Bidirectional Chopper With Auxiliary Converters for Battery Energy Storage Systems 用于电池储能系统的带辅助转换器的交错双向斩波器
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124220
Hamzeh J. Ahmad, M. Hagiwara
{"title":"Interleaved Bidirectional Chopper With Auxiliary Converters for Battery Energy Storage Systems","authors":"Hamzeh J. Ahmad, M. Hagiwara","doi":"10.1109/APEC39645.2020.9124220","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124220","url":null,"abstract":"A battery energy storage system that is placed inside a dc electric railway vehicle is equipped with a bidirectional chopper that has heavy and bulky inductors for current smoothing. High-voltage-side and low-voltage-side current smoothing inductors are responsible for most of the chopper volume and mass. This paper presents an interleaved bidirectional chopper with auxiliary converters for on-board battery energy storage systems that is capable of achieving a significant reduction in the mass and volume of the current-smoothing inductors. The proposed circuit consists of multiple interleaved sub-converters, where each sub-converter consists of a bidirectional chopper cell, a current-smoothing inductor at the low-voltage side, and an auxiliary converter that is formed by a cascade connection of multiple full-bridge cells. Each auxiliary converter is connected in series with its respective inductor to suppress the ac voltage component that produces current ripple in the inductor of each sub-converter; hence a much smaller inductor can be used to meet the current ripple requirement when compared with the conventional bidirectional chopper. In addition, auxiliary converters can be used as dc-circuit breakers to protect the low-voltage side against faults in the power devices of the bidirectional chopper cells. Furthermore, interleaving the sub-converters reduces filtering requirements for the high-voltage-side current and reduces the current-ripple factor of the low-voltage-side current. This paper discusses the operating principles and the control method of the proposed chopper, followed by experiments performed on a 150-V, 3-kW downscaled experimental model.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130859868","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
Lithium-ion Battery State of Health Estimation Using Empirical Mode Decomposition Sample Entropy and Support Vector Machine 基于经验模态分解样本熵和支持向量机的锂离子电池健康状态估计
2020 IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2020-03-01 DOI: 10.1109/APEC39645.2020.9124327
Xin Sui, Shan He, D. Stroe, R. Teodorescu
{"title":"Lithium-ion Battery State of Health Estimation Using Empirical Mode Decomposition Sample Entropy and Support Vector Machine","authors":"Xin Sui, Shan He, D. Stroe, R. Teodorescu","doi":"10.1109/APEC39645.2020.9124327","DOIUrl":"https://doi.org/10.1109/APEC39645.2020.9124327","url":null,"abstract":"Accurate knowledge of the state of health (SOH) is important for battery management system to maintain safe operation of batteries and extend their lifetime. In order to improve the accuracy in estimating the SOH of a battery, a new method based on empirical mode decomposition sample entropy (EMDSE) and support vector machine (SVM) is proposed in this paper. Compared with the tradition SE-based method, EMD is used to filter the noise of the original signal. Then the EMDSE as a new feature is used for the SVM training, and the potential relationship between the SOH and the EMDSE is established. Finally, the effectiveness of the proposed method is verified by experimental results.","PeriodicalId":171455,"journal":{"name":"2020 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130911896","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
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