IEEE open journal of power electronics最新文献_第2页

Introduction of a Self-Stabilizing Decentralized Energy Management System for Undersupplied EV Charging Parks 供给不足的电动汽车充电公园自稳定分散能源管理系统的引入

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IEEE open journal of power electronics Pub Date : 2025-04-08 DOI: 10.1109/OJPEL.2025.3558505

Raffael Schwanninger;Juliane Friedrich;Kilian Drexler;Melanie Lavery;Martin Maerz

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A High–Gain and Cost–Effective Three–Port DC-DC Converter With Reduced Semiconductor Stress and Higher Power Density 具有低半导体应力和高功率密度的高增益和高性价比的三端口DC-DC变换器

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IEEE open journal of power electronics Pub Date : 2025-04-02 DOI: 10.1109/OJPEL.2025.3557354

Sina Ahmadian;Farshid Yousefi Moghadam;Vahid Abbasi;Siroos Jalilyan;Saman A. Gorji

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A SP-SECE None-Residual Charge PEH Interface Circuit With an Optimized Phase Delay 一种具有优化相位延迟的sp - see无剩余电荷PEH接口电路

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IEEE open journal of power electronics Pub Date : 2025-04-02 DOI: 10.1109/OJPEL.2025.3557028

Saman Shoorabi Sani

{"title":"A SP-SECE None-Residual Charge PEH Interface Circuit With an Optimized Phase Delay","authors":"Saman Shoorabi Sani","doi":"10.1109/OJPEL.2025.3557028","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3557028","url":null,"abstract":"<italic>Self-Powered Synchronous Electric Charge Extraction (<italic>SP-SECE) suffers from the inherent phase inconsistency between the switching instant, which manipulates the voltage, and the moment of zero-crossing of the piezoelectric current. This degrades its energy extraction efficiency of it. This paper proposes a novel <italic>SP-SECE circuit to improve the <italic>Phase Delay (<italic>PD) introduced by <italic>Voltage Retreatment (<italic>VR) and <italic>Residual Charge (<italic>RC) left on the <italic>Piezoelectric Energy Harvester (<italic>PEH) capacitor after completion of <italic>SECE execution. To address the <italic>VR effect, the circuit employs a new reference branch, which can improve the timing of the <italic>SECE action. The <italic>RC issue is mitigated using a low-power sub-circuit, which removes the remaining charge on the <italic>PEH capacitor after each energy extraction. Post-layout simulations of the proposed circuit in a standard 180-nm <italic>CMOS technology verify that the losses linked to <italic>PD introduced by <italic>VR and <italic>RC phenomena are significantly reduced, increasing the net output power. Moreover, the proposed circuit achieves an extraction efficiency of 82% and a <italic>FOMMOPIR of 300% at a peak voltage of 3.3 V.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"712-733"},"PeriodicalIF":5.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10947531","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Method for Detection and Limitation of Short-Circuit Currents for Semiconductor Circuit Breakers in LVDC Grids Using a Pre-Saturated Inductor 采用预饱和电感的LVDC电网中半导体断路器短路电流检测与限制方法

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IEEE open journal of power electronics Pub Date : 2025-03-31 DOI: 10.1109/OJPEL.2025.3555797

Johannes Gehring;Raffael Schwanninger;Alexander Nowak;Bernd Wunder;Vincent Lorentz;Martin März

引用次数: 0

Dropout Kolmogorov–Arnold Networks: A Novel Data-Driven Impedance Modeling Approach for Voltage-Source Converters 辍学Kolmogorov-Arnold网络：一种新的数据驱动的电压源变换器阻抗建模方法

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IEEE open journal of power electronics Pub Date : 2025-03-31 DOI: 10.1109/OJPEL.2025.3556430

Moetasem Ali;Yasser Abdel-Rady I. Mohamed

{"title":"Dropout Kolmogorov–Arnold Networks: A Novel Data-Driven Impedance Modeling Approach for Voltage-Source Converters","authors":"Moetasem Ali;Yasser Abdel-Rady I. Mohamed","doi":"10.1109/OJPEL.2025.3556430","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3556430","url":null,"abstract":"The extensive integration of voltage-source converters (VSCs) as interfaces for renewable energy sources in power systems increases stability concerns and demands accurate VSC impedance models to characterize grid-converter interactions at various operating points. However, analytical impedance models require detailed knowledge of the VSC parameters, which are frequently inaccessible due to manufacturer confidentiality. Further, existing neural network data-driven VSC impedance identification methods adopt conventional multi-layer perceptrons, yielding complex models and demanding abundant high-quality data. This paper presents a data-driven VSC impedance identification method using Dropout Kolmogorov-Arnold Networks (DropKANs) to address these challenges effectively. The hyperparameters of the proposed DropKAN model are optimized using Optuna, outperforming the Scikit-learn, Hyperopt, and GPyOpt optimizers, and the training is optimized using the Adam optimizer and compared with Nadam and RMSprop. Comprehensive and comparative evaluation tests showed 1) the superiority of the proposed DropKAN model over the feedforward neural network, long short-term memory, and KAN models in terms of accuracy, training and prediction times, and neural network structure simplicity, even with a 50% reduction in the training data size, and 2) the versatility and robustness of the proposed DropKAN model when applied to a different VSC system.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"562-582"},"PeriodicalIF":5.0,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10946167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Physical Modeling of Core Losses in Ferrite E-Cores 铁氧体e型铁芯损耗的物理模拟

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IEEE open journal of power electronics Pub Date : 2025-03-26 DOI: 10.1109/OJPEL.2025.3554923

Théophane Dimier;Jürgen Biela

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Single-Switch Soft-Switched High Voltage Gain Converter With Low Voltage Stress and Continuous Input Current 具有低电压应力和连续输入电流的单开关软开关高压增益变换器

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IEEE open journal of power electronics Pub Date : 2025-03-24 DOI: 10.1109/OJPEL.2025.3554381

Mohammad Reza Gholami;Siamak Khalili;Hosein Farzanehfard;Ehsan Adib;Hani Vahedi

{"title":"Single-Switch Soft-Switched High Voltage Gain Converter With Low Voltage Stress and Continuous Input Current","authors":"Mohammad Reza Gholami;Siamak Khalili;Hosein Farzanehfard;Ehsan Adib;Hani Vahedi","doi":"10.1109/OJPEL.2025.3554381","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3554381","url":null,"abstract":"This paper introduces a soft-switched high step-up converter applicable to photovoltaic systems. In the proposed topology, to further improve the voltage gain and reduce the components voltage stress, coupled inductors and voltage multiplier cell (VMC) techniques are integrated with the conventional boost converter. Hence, it addresses challenges in traditional boost converter when operating at near unity duty cycle and enables it to utilize high-quality components that lead to decreased conduction losses in high-output voltage applications. Furthermore, the converter achieves soft switching operation by incorporating a lossless snubber cell, which consists of just two diodes and requires no additional switches and magnetic cores. These features contribute to enhancing the converter efficiency. Notably, the energy stored in the snubber circuit is effectively recovered to the output without any circulating current, making it a beneficial characteristic among the lossless snubber structures. The proposed topology also offers a common ground between the input and output terminals, as well as the switch which simplifies the converter control circuit. Additionally, it maintains continuous input current, which makes the proposed converter more suitable for photovoltaic system applications. To validate the converter benefits, a 150 W laboratory prototype converter is implemented.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"551-561"},"PeriodicalIF":5.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10938198","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Current Sensorless Online Capacitor Parameter Estimation Method in Buck Converters Based on Large Signal Profile Considering Magnetic Saturation 考虑磁饱和的大信号剖面Buck变换器无电流传感器在线电容参数估计方法

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IEEE open journal of power electronics Pub Date : 2025-03-24 DOI: 10.1109/OJPEL.2025.3554275

Xinguo Zhang;Xue Su;Yilin Wang;Haoyu Wang;Yu Liu

{"title":"Current Sensorless Online Capacitor Parameter Estimation Method in Buck Converters Based on Large Signal Profile Considering Magnetic Saturation","authors":"Xinguo Zhang;Xue Su;Yilin Wang;Haoyu Wang;Yu Liu","doi":"10.1109/OJPEL.2025.3554275","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3554275","url":null,"abstract":"Large signal profiles are commonly utilized for estimating capacitor parameters in power converters, which typically requires current information. Installation of current sensors in practical power converters could be inconvenient and expensive. Existing current sensorless methods calculate the current based on voltage measurements. However, the ignorance of magnetic saturation of inductors could cause large current calculation errors, which propagate to the capacitor parameter estimation results. For buck converters, this paper proposes a current sensorless capacitor parameter estimation method that fully considers the magnetic saturation of inductors. Initially, the relationship between magnetic flux linkage and inductor current is modeled as a piecewise polynomial function, to achieve accurate extraction of currents using voltage measurements during magnetic saturation. Subsequently, the equivalent series resistance and capacitance of the capacitor are rigorously derived and analytically expressed by voltage measurements only. Simulations and hardware experiments confirm the effectiveness and accuracy of the proposed method.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"647-659"},"PeriodicalIF":5.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10938230","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Nanocrystalline Core Losses in High Power IPT Systems for EV Charging Applications 用于电动汽车充电的大功率IPT系统中的纳米晶磁芯损耗

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IEEE open journal of power electronics Pub Date : 2025-03-24 DOI: 10.1109/OJPEL.2025.3553159

Wenting Zhang;Seho Kim;Grant A. Covic

{"title":"Nanocrystalline Core Losses in High Power IPT Systems for EV Charging Applications","authors":"Wenting Zhang;Seho Kim;Grant A. Covic","doi":"10.1109/OJPEL.2025.3553159","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3553159","url":null,"abstract":"This article discusses the effectiveness of the nanocrystalline cores in high-power inductive power transfer (IPT) systems. The core losses and equivalent series resistances (ESRs) of the ferrite and nanocrystalline cores in IPT pads are simulated in ANSYS Maxwell based on measurements of their magnetic properties using the partial cancellation method. Simulated results are verified using experiments of core loss measurements in IPT pads. Both simulated and experimental findings show that the ESR of IPT pads using fractured nanocrystalline cores decreases with higher excitation current, contrary to the typical behaviour of an IPT pad built using ferrite. This behaviour is in accordance with characterisation results of ferrite and nanocrystalline toroids and is analysed using Steinmetz coefficients. A 10 kW IPT system is set up to validate the effectiveness of the fractured nanocrystalline cores. Compared to TDK N95 ferrite cores, an IPT system using non-fractured nanocrystalline cores has a 0.6% reduction in dc-dc efficiency, while that of fractured nanocrystalline cores improves by 0.1% and operates with a lower magnetic flux density within the magnetic core.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"537-550"},"PeriodicalIF":5.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10938171","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143817871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Comparison of Electric Field Calculation Methods for Optimization Routines to Design Medium-Frequency Transformer Insulation 中频变压器绝缘优化程序电场计算方法的比较

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IEEE open journal of power electronics Pub Date : 2025-03-24 DOI: 10.1109/OJPEL.2025.3554299

Bastian Korthauer;Jürgen Biela

{"title":"Comparison of Electric Field Calculation Methods for Optimization Routines to Design Medium-Frequency Transformer Insulation","authors":"Bastian Korthauer;Jürgen Biela","doi":"10.1109/OJPEL.2025.3554299","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3554299","url":null,"abstract":"Since the insulation volume of medium-frequency transformers (MFTs) typically constitutes a significant fraction of the overall transformer volume, design routines focusing on optimizing insulation are crucial. Such optimization requires fast and accurate electric field computations in several critical regions of the MFT, making the choice of effective computation methods essential. This paper compares suitable methods, including the Schwarz-Christoffel transformation (SCT), the charge simulation method (CSM), and commonly used analytical approaches, by benchmarking them against nearly 4000 finite element analysis (FEA) simulations. Each method's error is analyzed, and a sensitivity study is performed to define the parameter ranges where each method yields accurate results. The CSM is found to provide the most accurate field computation (<inline-formula><tex-math>$< $</tex-math></inline-formula>5% error) across all examined critical regions. However, to compensate for its increased computation time for geometries with rectangular conductors, combining the CSM with the SCT – which is approximately 10 times faster – is recommended to achieve optimal performance.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"630-646"},"PeriodicalIF":5.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10938224","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0