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

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

IF 5

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

Théophane Dimier;Jürgen Biela

引用次数: 0

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

IF 5

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}

引用次数: 0

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

IF 5

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}

引用次数: 0

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

IF 5

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}

引用次数: 0

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

IF 5

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

Design of a Dual-Inverter Structure for a Point-to-Point Multifrequency Power Transfer 点对点多频功率传输的双逆变器结构设计

IF 5

IEEE open journal of power electronics Pub Date : 2025-03-18 DOI: 10.1109/OJPEL.2025.3552700

Xavier Genaro-Muñoz;Hugo Valderrama-Blavi;Roberto Giral

引用次数: 0

Grid Agnostic Droop Control Strategy for Damping Restoration and Optimal Reactive Power-Sharing 阻尼恢复与最优无功共享的电网不可知下垂控制策略

IF 5

IEEE open journal of power electronics Pub Date : 2025-03-14 DOI: 10.1109/OJPEL.2025.3551611

Prashant Pant;Vladimir Terzija;Thomas Hamacher;Vedran S. Perić

{"title":"Grid Agnostic Droop Control Strategy for Damping Restoration and Optimal Reactive Power-Sharing","authors":"Prashant Pant;Vladimir Terzija;Thomas Hamacher;Vedran S. Perić","doi":"10.1109/OJPEL.2025.3551611","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3551611","url":null,"abstract":"In low-voltage microgrids, parallel grid-forming inverters face the challenge of disproportional reactive power sharing due to (i) the local nature of voltages and (ii) the cross-coupling between the frequency and voltage droop control loops resulting from predominantly resistive feeders. A large magnitude reactive droop coefficient (RDC) can decouple the frequency and voltage droop loops. However, the large droop coefficients can lead to increased power oscillations and insufficiently damped modes in the system. To balance these conflicting objectives, this paper proposes an adaptive droop control strategy that adapts the RDCs in real-time, ensuring the best possible reactive power sharing while maintaining sufficiently high damping of the inverter's oscillatory modes. The damping-ratio is derived by perturbing the RDC and processing the inverter's active power response using the Matrix-Pencil mode estimation algorithm. The proposed control system is validated through Controller Hardware-in-the-Loop (C-HIL) experiments. Typhoon HIL-402 real-time (RT) emulator is used to emulate the power stage. A dedicated Windows PC serves as the secondary controller, updating the reactive droop coefficient. Communication between the hardware emulator and the controller takes place over the OPC UA protocol via a LAN. The results demonstrate that the proposed control offers three key advantages: (i) improved reactive power sharing compared to the fixed droop control method, (ii) enhanced microgrid stability under various disturbances, and (iii) applicability to grids with unknown grid <inline-formula><tex-math>$R/X$</tex-math></inline-formula> ratios.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"613-629"},"PeriodicalIF":5.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10925905","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839913","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

High-Power, High-Repetition Short-Pulse Laser Driver Using Direct-Drive D-Mode GaN HEMT 使用直接驱动d模GaN HEMT的高功率、高重复短脉冲激光驱动器

IF 5

IEEE open journal of power electronics Pub Date : 2025-03-11 DOI: 10.1109/OJPEL.2025.3550034

Ching-Yao Liu;Chun-Hsiung Lin;Hao-Chung Kuo;Yu-Heng Hong;Edward-Yi Chang;Wei-Hua Chieng

{"title":"High-Power, High-Repetition Short-Pulse Laser Driver Using Direct-Drive D-Mode GaN HEMT","authors":"Ching-Yao Liu;Chun-Hsiung Lin;Hao-Chung Kuo;Yu-Heng Hong;Edward-Yi Chang;Wei-Hua Chieng","doi":"10.1109/OJPEL.2025.3550034","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3550034","url":null,"abstract":"This paper proposes a short-pulse laser driver using direct-drive depletion-mode gallium nitride high-electron-mobility-transistor (DDD GaN HEMT) device. Known for its low on-resistance, high switching performance, normally-off operation, and reliability, DDD GaN devices are becoming popular in power applications. In this work, an in-house D-mode GaN HEMT with a blocking voltage of 200 V and on-resistance of 18 mΩ is used in a short-pulse laser driver for the optical phased array (OPA) applications. To achieve higher spatial resolution, the laser repetition rate must be in the tens of MHz range. Therefore, the dynamic behavior of device is first characterized by the double-pulse test. Additionally, the push-pull based laser driver actively controls the load capacitor charging time and the laser pulse width, thereby ensuring stable operation at high repetition rates. The output characteristics of switch-controlled (SC) short-pulse laser driver are simplified to switch turn-on time, stray inductance, and the input voltage. Finally, the experimental results achieved a short pulse width of less than 5 ns, high repetition rate of 50 MHz, propagation delay of less than 1.5 ns and peak power of 175 W, meeting the requirements for the specified object detection application.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"474-484"},"PeriodicalIF":5.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10921718","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748929","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

Combined Frequency Control From Trains Thermal Inertia: An Assessment of Frequency Controllers Interaction 列车热惯性组合频率控制：频率控制器相互作用的评估

IF 5

IEEE open journal of power electronics Pub Date : 2025-03-03 DOI: 10.1109/OJPEL.2025.3547097

Jesús Araúz;Friedrich Wiegel;Simon Waczowicz;Veit Hagenmeyer;Sergio Martinez

{"title":"Combined Frequency Control From Trains Thermal Inertia: An Assessment of Frequency Controllers Interaction","authors":"Jesús Araúz;Friedrich Wiegel;Simon Waczowicz;Veit Hagenmeyer;Sergio Martinez","doi":"10.1109/OJPEL.2025.3547097","DOIUrl":"https://doi.org/10.1109/OJPEL.2025.3547097","url":null,"abstract":"The increasing introduction of power electronics into electric power systems requires more effort to maintain the stability, reliability, and security of grids. Among these, the frequency stability is worsened by the displacement of conventional generators. Demand response has been considered as an alternative to ensure grid stability. The present work proposes a combined frequency control for railway systems to support grid ancillary services without risking the circulation of trains and the comfort of passengers. In contrast to current demand response algorithms, it provides primary and secondary frequency control, and virtual inertia. In addition, due to the rising dynamics complexity in grids, this work presents a performance-based methodology to assess the interaction among frequency controllers without needing detailed models. Simulation and experimental case studies are presented to exemplify and validate the proposed method. The results demonstrate the effectiveness of the methodology in allowing a fast and low-complexity assessment. In addition, the benefits of the proposed control are demonstrated by several performance metrics. The coherence between simulation and experimental results validates the reliability and implementability of the proposed method in a real microgrid.","PeriodicalId":93182,"journal":{"name":"IEEE open journal of power electronics","volume":"6 ","pages":"464-473"},"PeriodicalIF":5.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10908639","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698175","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

Automatic Tuning of Extended Kalman Filter in Sensorless Synchronous Reluctance Motor Drives 扩展卡尔曼滤波在无传感器同步磁阻电机驱动中的自动调谐

IF 5

IEEE open journal of power electronics Pub Date : 2025-02-27 DOI: 10.1109/OJPEL.2025.3546752

Saverio Rigon;Benedikt Haus;Paolo Mercorelli;Mauro Zigliotto

引用次数: 0