IET Power Electronics最新文献_第10页

Wide voltage gain isolated LCC resonant converters for LED driver applications

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-23 DOI: 10.1049/pel2.12803

Shirin Askari, Navid Molavi, Hosein Farzanehfard

{"title":"Wide voltage gain isolated LCC resonant converters for LED driver applications","authors":"Shirin Askari, Navid Molavi, Hosein Farzanehfard","doi":"10.1049/pel2.12803","DOIUrl":"https://doi.org/10.1049/pel2.12803","url":null,"abstract":"This article proposes an isolated high-efficiency resonant LED driver with wide-input voltage range. The proposed converter is developed by integrating LCC resonant converter and buck-boost converter. In this topology, the LCC network provides many features including the integration of buck-boost filter inductor and the transformer magnetizing inductance. In addition, the LCC network provides zero voltage switching (ZVS) operation of the main switches and zero current switching (ZCS) operation of the rectifier diodes over a wide variation of duty cycle operation. Also, load-independent output current characteristic with improved efficiency is obtained at the resonant frequency operation which is well-suited for LED applications. Other topology variations of the proposed converter generating step-up and step-down voltage gains are introduced for applications with different input voltage ranges. To validate the theoretical analysis and LED driver operation, a 50 W laboratory prototype of the proposed LED driver is implemented for the wide input voltage of 18–40 V to deliver 500 mA output current to a string of 1–30 LEDs, which corresponds to an output voltage range of 3.3–100 V.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"2890-2899"},"PeriodicalIF":1.7,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12803","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143253202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Serial resonant converter (SRC) polynomial model implemented in a digital signal controller (DSC)

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-21 DOI: 10.1049/pel2.12809

Juan Díaz Gonzalez, Evode Rwamurangwa, Pedro Jose Villegas Saiz, Juan Antonio Martin-Ramos, Alberto Martin Pernia, María G. Busto

引用次数: 0

Investigation of microwave power transfer near sea surface with 2D parabolic equation method 用二维抛物线方程法研究海面附近的微波功率传输

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-19 DOI: 10.1049/pel2.12770

Jinyi Hui, Rong Bao, Jingkuan Mu, Xiang Chi, Chunliang Liu

引用次数: 0

A single phase nine level common ground switched capacitor inverter with double boosting capability

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-19 DOI: 10.1049/pel2.12804

Md Adil Azad, Adil Sarwar, Mohammad Zaid, Mohd Tariq, Farhad Ilahi Bakhsh, Shafiq Ahmad, Abdelaty Edrees Sayed, Md Rasidul Islam

{"title":"A single phase nine level common ground switched capacitor inverter with double boosting capability","authors":"Md Adil Azad, Adil Sarwar, Mohammad Zaid, Mohd Tariq, Farhad Ilahi Bakhsh, Shafiq Ahmad, Abdelaty Edrees Sayed, Md Rasidul Islam","doi":"10.1049/pel2.12804","DOIUrl":"https://doi.org/10.1049/pel2.12804","url":null,"abstract":"This article suggests a nine-level (9L) seven-switch (7S) transformer-less (TL) common-ground (CG) switched capacitor (SC) inverter with double boosting capability. The proposed 9L7S-CGSC-TL inverter comprises only seven switches (7S), two diodes, three self-balanced capacitors, and one DC source. The suggested inverter has a CG connection which eliminates ground leakage currents. Additionally, the suggested topology necessitates fewer conducting devices, thereby reducing conduction losses. The voltage across every capacitor is automatically balanced within each fundamental cycle. The proposed topology has been evaluated based on parameters such as component count, total harmonic distortion, cost, and efficiency. The proposed configuration switching sequence is governed by employing the level-shifted pulse width modulation technique. A power loss study was conducted to determine the efficiency of the proposed switched capacitor multilevel inverter (SCMLI) under different load conditions in PLECS. The results shows that the proposed SCMLI achieves a peak efficiency of 98.17%. Further, the lifespan of the proposed SCMLI is assessed through a reliability assessment. The simulation and experimental results at different conditions are presented and elucidated.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"2900-2916"},"PeriodicalIF":1.7,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12804","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143253002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust sliding mode control for the MMC-HVDC transmission system with SCR uncertainty 具有可控硅不确定性的 MMC-HVDC 输电系统的稳健滑模控制

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-19 DOI: 10.1049/pel2.12805

Farzin Gharaghani, Mehdi Asadi

引用次数: 0

Disturbance-rejection adjacent vector model predictive control strategy based on extended state observer for EV converter 基于扩展状态观测器的电动汽车变流器干扰抑制邻近矢量模型预测控制策略

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-19 DOI: 10.1049/pel2.12807

Jianwei Zhang, Qiaosen Cao, Guangchen Liu, Marco Rivera, Patrick Wheeler

{"title":"Disturbance-rejection adjacent vector model predictive control strategy based on extended state observer for EV converter","authors":"Jianwei Zhang, Qiaosen Cao, Guangchen Liu, Marco Rivera, Patrick Wheeler","doi":"10.1049/pel2.12807","DOIUrl":"https://doi.org/10.1049/pel2.12807","url":null,"abstract":"Conventional single-vector model predictive control (MPC) can suffer from low control accuracy, while multi-vector MPC is often criticized for its complexity and heavy computational burden. In order to address these issues, an adjacent vector-based MPC is investigated in this paper for an electric vehicle battery charging and discharging converter. The voltage vector selection table based on the principle of using adjacent vectors has been designed and this reduces the number of iterations and thus the computational burden. A threshold is used in the adjacent vector-based MPC to coordinate the use of the single and multi-vector MPCs considering a balance between the control accuracy and computational burden. In addition, to enhance the robustness of MPC to parameter changes, an extended state observer for active disturbance rejection control has been used to derive the predictive model, and an adjacent vector-based MPC using extended state observer is studied. The method does not need accurate system parameters. Instead, it only requires the system input and output measurements to calculate the predicted current. The robustness of the controller against the parameter mismatch is enhanced compared to alternative approaches and the experimental results verify the feasibility and effectiveness of the proposed strategy.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 15","pages":"2572-2583"},"PeriodicalIF":1.7,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12807","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Threshold voltage instability of SiC MOSFETs under very-high temperature and wide gate bias 超高温和宽栅偏压条件下 SiC MOSFET 的阈值电压不稳定性

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-18 DOI: 10.1049/pel2.12786

Cong Chen, Yumeng Cai, Peng Sun, Zhibin Zhao

{"title":"Threshold voltage instability of SiC MOSFETs under very-high temperature and wide gate bias","authors":"Cong Chen, Yumeng Cai, Peng Sun, Zhibin Zhao","doi":"10.1049/pel2.12786","DOIUrl":"https://doi.org/10.1049/pel2.12786","url":null,"abstract":"Threshold voltage (VTH) instability affects the reliability of silicon carbide (SiC) MOSFETs. In this article, the influence of gate bias (VGS) and high temperature on VTH instability is investigated under wide VGS and very-high temperature range (150°C to 275°C). The degradation mechanism of gate oxide under coupling of different electrical and thermal stress is revealed. When the device is subjected to +VGS, the relationship between VTH shift and temperature is not monotonic and there is a temperature turning point. This is mainly related to the capture/release and generation of electron traps. However, the VTH shift increases sharply and gate oxide breakdown for the device bias at +35 V, which is related to Fowler–Nordheim (F–N) tunnelling effect. For a large −VGS, the VTH shift is very small. Moreover, when the negative VGS decreases, the VTH shift is positively correlated with temperature, which may result from the activation and charge exchange of hole traps. However, the influence of moving ions changes the temperature dependence of VTH shift for the device bias at −30 V. Finally, the devices of different manufacturers are studied and similar change patterns are found. This finding provides guidance for the further application of SiC MOSFETs under high temperatures and different voltages.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 15","pages":"2393-2404"},"PeriodicalIF":1.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12786","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coati optimized FOPID controller for non-isolated DC–DC converters in EV charging application

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-17 DOI: 10.1049/pel2.12798

Piyush Sharma, Dheeraj Kumar Palwalia, Ashok Kumar Sharma, Neeraj Priyadarshi, Sanjeevikumar Padmanaban

{"title":"Coati optimized FOPID controller for non-isolated DC–DC converters in EV charging application","authors":"Piyush Sharma, Dheeraj Kumar Palwalia, Ashok Kumar Sharma, Neeraj Priyadarshi, Sanjeevikumar Padmanaban","doi":"10.1049/pel2.12798","DOIUrl":"https://doi.org/10.1049/pel2.12798","url":null,"abstract":"The transportation sector's shift from internal combustion engines to electric vehicles (EVs) has made enough charging facilities necessary. The converter's architecture has undergone several changes to provide the best possible charging for electric vehicles. For EV charging applications, both isolated and non-isolated converters are employed. The significant strain on switches and losses in the various converter topologies are among the main problems. To minimize these issues, the current-fed non-isolated DC–DC converter is proposed with fewer switching devices. The proposed converter design is validated for the EV charging application in the MATLAB/Simulink tool. Moreover, Coati optimized fractional order proportional integral derivative controller is proposed, which provides optimum switching signals for the converter based on the voltage input. Furthermore, the responses are realized for buck and boost modes of operations. It is verified that zero current switching and zero voltage switching are achieved under boost mode. The results analysis demonstrates that the proposed converter has a higher efficiency of 99.7% and 99.02% in buck and boost mode, respectively.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 16","pages":"2771-2784"},"PeriodicalIF":1.7,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12798","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143252850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-objective optimization of inductive power transfer system with reconfigurable topology for misalignment tolerance 采用可重构拓扑结构的电感式功率传输系统的多目标优化，以实现错位容差

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-16 DOI: 10.1049/pel2.12766

Junfeng Yang, Qiujiang Liu, Xu Yang, Yanru Zhang

{"title":"Multi-objective optimization of inductive power transfer system with reconfigurable topology for misalignment tolerance","authors":"Junfeng Yang, Qiujiang Liu, Xu Yang, Yanru Zhang","doi":"10.1049/pel2.12766","DOIUrl":"https://doi.org/10.1049/pel2.12766","url":null,"abstract":"At present, most of the analyses or studies about inductive power transfer (IPT) with constant current (CC) output and constant voltage (CV) output are carried out without considering misalignment conditions or different gaps. An IPT system satisfying battery charging demand and anti-misalignment requirements simultaneously is infrequent. This paper proposes a multi-objective particle swarm optimization method of IPT reconfigurable topology to realize CC and CV modes at varying resistance conditions and wide coupling ranges. The output characteristics of an inductor–capacitor–capacitor (LCC)–LCC compensation circuit have been explored, and it is found that the secondary-side compensated capacitors have a greater impact on the output power, which can be used to improve power regulation ability accompanied by coupling varying. Eight optimization compensated parameters of the reconfigurable topology are obtained from the Pareto front to achieve the required CC and CV charging outputs. By switching the compensated capacitors, the selected parameters can make the current and voltage fluctuation less than 9.3% and 7.9%, respectively, during the coupling charging range from 0.3 to 0.22. Moreover, primary zero voltage switching operation is achieved to enable high efficiency. The simulation and the experimental verification are carried out to verify the validity of the proposed method.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 15","pages":"2262-2277"},"PeriodicalIF":1.7,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12766","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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 and implementation of a solar power optimizer for module level power electronics application 为模块级电力电子应用设计和实施太阳能优化器

IF 1.7 4区工程技术

IET Power Electronics Pub Date : 2024-10-14 DOI: 10.1049/pel2.12801

Babak Allahverdinejad, Ali Ajami, Mohamad Reza Banaei

{"title":"Design and implementation of a solar power optimizer for module level power electronics application","authors":"Babak Allahverdinejad, Ali Ajami, Mohamad Reza Banaei","doi":"10.1049/pel2.12801","DOIUrl":"https://doi.org/10.1049/pel2.12801","url":null,"abstract":"Partial shading on series-connected photovoltaic (PV) panels in conventional PV systems results in lower harvested power. To resolve this, it is vital to utilize module level power electronics (MLPE) such as Solar Power Optimizers (SPOs). This paper introduced a non-isolated common ground non-inverting output voltage buck-boost converter as an SPO. Proposed converter benefits from continuous input and output currents which has a significant role in designing SPOs. Having a quadratic gain, beside acceptable step-down range are other features of the converter. Operating principle, design, steady-state, small-signal analysis, and dynamic performance of proposed converter are included. Proposed converter is compared with other buck-boost converters in terms of voltage gain, voltage stresses, continuous input and output current, and output polarity. To validate the performance of introduced converter, experimental results for a prototype with input voltage 24 V, output voltage 72 V for step-up and 15 V for step-down modes are given and results are examined. The maximum efficiency of the prototype is 93% and 89% for step-up and step-down modes, respectively. To evaluate the effect of proposed SPO for extracting maximum available power from PVs, simulation results of a grid connected PV system with two series connected SPOs is discussed.","PeriodicalId":56302,"journal":{"name":"IET Power Electronics","volume":"17 15","pages":"2531-2548"},"PeriodicalIF":1.7,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/pel2.12801","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0