Pub Date : 2025-10-24DOI: 10.1109/MEI.2025.11217440
In 2018 the IEEE Dielectrics and Electrical Insulation Society created the Steven A. Boggs Young Professional Achievement Award to be given every two years to individuals who have achieved their first significant results in the field of dielectrics and electrical insulation. Their contribution can be in the development of new dielectric materials, aging of insulating materials or systems, or insulation diagnostics. The nominees should have a minimum of 3 years and up to 10 years of experience in research, engineering, or innovation after completing their bachelor's degree. Specifically, nominees should have obtained their first degree in 2016 or later. Nominations can be made by submitting an e-mail or letter to Greg Stone by January 31, 2026. The nominator must provide information on why the nominee's contribution is significant, as well as the nominee's CV and proposed citation (self-nominations are not permitted). The nominator must also indicate at least three people who will endorse the nomination and who will provide their letters of support for the nomination directly to Greg Stone, DEIS Awards Committee Chair, at g.stone@ieee.org.
{"title":"Bulletin Board: Call for Nominations: 2026 Steven A. Boggs Young Professional Achievement Award Deadline: January 31, 2026","authors":"","doi":"10.1109/MEI.2025.11217440","DOIUrl":"https://doi.org/10.1109/MEI.2025.11217440","url":null,"abstract":"In 2018 the IEEE Dielectrics and Electrical Insulation Society created the Steven A. Boggs Young Professional Achievement Award to be given every two years to individuals who have achieved their first significant results in the field of dielectrics and electrical insulation. Their contribution can be in the development of new dielectric materials, aging of insulating materials or systems, or insulation diagnostics. The nominees should have a minimum of 3 years and up to 10 years of experience in research, engineering, or innovation after completing their bachelor's degree. Specifically, nominees should have obtained their first degree in 2016 or later. Nominations can be made by submitting an e-mail or letter to Greg Stone by January 31, 2026. The nominator must provide information on why the nominee's contribution is significant, as well as the nominee's CV and proposed citation (self-nominations are not permitted). The nominator must also indicate at least three people who will endorse the nomination and who will provide their letters of support for the nomination directly to Greg Stone, DEIS Awards Committee Chair, at g.stone@ieee.org.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 6","pages":"58-58"},"PeriodicalIF":1.3,"publicationDate":"2025-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11217440","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145352154","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}
Pub Date : 2025-10-24DOI: 10.1109/MEI.2025.11217425
Kaylee Champion
In 2021 I started my PhD at the University of Colorado (CU), researching spacecraft-plasma interactions, which involve both vacuum chamber experiments and complex simulations. I happened upon this research topic during my junior year at the University of Texas while pursuing an undergraduate research position. I was fortunate to receive an offer to study spacecraft-plasma simulations. Through this position, I uncovered a strong passion for the research. It was this passion that led me to decide to continue in that area in graduate school, as well as intern at the Kirtland Air Force Base Air Force Research Lab (AFRL) the summer before starting graduate school.
2021年，我在科罗拉多大学（University of Colorado）开始攻读博士学位，研究航天器与等离子体的相互作用，包括真空室实验和复杂的模拟。我在德克萨斯大学大三的时候偶然发现了这个研究课题，当时我正在攻读本科研究职位。我很幸运地获得了研究宇宙飞船等离子体模拟的机会。通过这个职位，我发现了对研究的强烈热情。正是这种激情让我决定在研究生院继续研究这个领域，并在开始研究生院之前的那个夏天在科特兰空军基地空军研究实验室（AFRL）实习。
{"title":"Young Professionals","authors":"Kaylee Champion","doi":"10.1109/MEI.2025.11217425","DOIUrl":"https://doi.org/10.1109/MEI.2025.11217425","url":null,"abstract":"In 2021 I started my PhD at the University of Colorado (CU), researching spacecraft-plasma interactions, which involve both vacuum chamber experiments and complex simulations. I happened upon this research topic during my junior year at the University of Texas while pursuing an undergraduate research position. I was fortunate to receive an offer to study spacecraft-plasma simulations. Through this position, I uncovered a strong passion for the research. It was this passion that led me to decide to continue in that area in graduate school, as well as intern at the Kirtland Air Force Base Air Force Research Lab (AFRL) the summer before starting graduate school.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 6","pages":"43-44"},"PeriodicalIF":1.3,"publicationDate":"2025-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11217425","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145351905","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}
Pub Date : 2025-10-24DOI: 10.1109/MEI.2025.11217427
Jialin Chen;Qiang Liu;Paul Jarman;Gordon Wilson
A novel method using ester-based tracers and Fourier-transform infrared spectroscopy is proposed to diagnose tap changer switch oil leaks in power transformers.
提出了一种利用酯基示踪剂和傅里叶变换红外光谱技术诊断电力变压器分接开关漏油的新方法。
{"title":"Application of Ester-Based Tracers for Diagnosing Tap Changer Switch Oil Leaks in Power Transformers","authors":"Jialin Chen;Qiang Liu;Paul Jarman;Gordon Wilson","doi":"10.1109/MEI.2025.11217427","DOIUrl":"https://doi.org/10.1109/MEI.2025.11217427","url":null,"abstract":"A novel method using ester-based tracers and Fourier-transform infrared spectroscopy is proposed to diagnose tap changer switch oil leaks in power transformers.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 6","pages":"8-14"},"PeriodicalIF":1.3,"publicationDate":"2025-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145352152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-24DOI: 10.1109/MEI.2025.11217419
Every two years, the IEEE Dielectrics and Electrical Insulation Society selects an individual for their outstanding, original contributions in advancing the technology of dielectrics and electrical insulation. The DEIS is now seeking nominations for the 2026 Dakin Award. Nominations can be made by submitting an e-mail or letter to Greg Stone by January 31, 2026. Nominations must provide the name of the nominee, his or her CV, why the nominee is worthy of the award, and the proposed citation. The nominator must also indicate at least three people who will endorse the nomination and who will provide their letter of support for the nomination directly to Greg Stone.
{"title":"Bulletin Board: Call for Nominations: 2026 Thomas W. Dakin Distinguished Technical Contributions Award Deadline: January 31, 2026","authors":"","doi":"10.1109/MEI.2025.11217419","DOIUrl":"https://doi.org/10.1109/MEI.2025.11217419","url":null,"abstract":"Every two years, the IEEE Dielectrics and Electrical Insulation Society selects an individual for their outstanding, original contributions in advancing the technology of dielectrics and electrical insulation. The DEIS is now seeking nominations for the 2026 Dakin Award. Nominations can be made by submitting an e-mail or letter to Greg Stone by January 31, 2026. Nominations must provide the name of the nominee, his or her CV, why the nominee is worthy of the award, and the proposed citation. The nominator must also indicate at least three people who will endorse the nomination and who will provide their letter of support for the nomination directly to Greg Stone.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 6","pages":"57-57"},"PeriodicalIF":1.3,"publicationDate":"2025-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11217419","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145352200","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}
Pub Date : 2025-10-24DOI: 10.1109/MEI.2025.11217420
Tony Lujia Chen
This issue features three articles, the first of which, by Chen, Liu, Jarman, and Wilson, titled “Application of Ester-Based Tracers for Diagnosing Tap Changer Switch Oil Leaks in Power Transformers,” presents a new diagnostic approach for identifying oil migration between compartments in high-voltage transformers. It proposes the use of synthetic ester liquids as tracers, which are fully miscible in mineral oil and detectable via Fourier-transform infrared spectroscopy because of their unique ester functional group. The study details the preparation of various mineral oil samples, unused, laboratory aged, and in-service aged, with synthetic ester and demonstrates a strong linear correlation between ester concentration and absorbance for the C=O ester functional group. The results show that the detection limit of the measurement procedure is between 0.02% and 0.01%. The methodology shows high repeatability and minimal interference from aging by-products, confirming the feasibility of a synthetic ester liquid as an identification marker for diagnosing tap changer oil leaks. This work is particularly relevant for engineers and asset managers seeking to enhance transformer reliability through improved leak detection and compartmental integrity assessment.
{"title":"From the Editor","authors":"Tony Lujia Chen","doi":"10.1109/MEI.2025.11217420","DOIUrl":"https://doi.org/10.1109/MEI.2025.11217420","url":null,"abstract":"This issue features three articles, the first of which, by Chen, Liu, Jarman, and Wilson, titled “Application of Ester-Based Tracers for Diagnosing Tap Changer Switch Oil Leaks in Power Transformers,” presents a new diagnostic approach for identifying oil migration between compartments in high-voltage transformers. It proposes the use of synthetic ester liquids as tracers, which are fully miscible in mineral oil and detectable via Fourier-transform infrared spectroscopy because of their unique ester functional group. The study details the preparation of various mineral oil samples, unused, laboratory aged, and in-service aged, with synthetic ester and demonstrates a strong linear correlation between ester concentration and absorbance for the C=O ester functional group. The results show that the detection limit of the measurement procedure is between 0.02% and 0.01%. The methodology shows high repeatability and minimal interference from aging by-products, confirming the feasibility of a synthetic ester liquid as an identification marker for diagnosing tap changer oil leaks. This work is particularly relevant for engineers and asset managers seeking to enhance transformer reliability through improved leak detection and compartmental integrity assessment.","PeriodicalId":444,"journal":{"name":"IEEE Electrical Insulation Magazine","volume":"41 6","pages":"4-5"},"PeriodicalIF":1.3,"publicationDate":"2025-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11217420","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145352263","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}
ASELSAN Inc. has been working on electromagnetic launchers (EMLs) since 2014. The last prototype has a $50times 60$ mm convex bore with a length of 6 m. The barrel design of an EML is important for high efficiency. One of the most important features of the barrel is the armature geometry. In this study, the shape of the armature of an EML, EMFY-4 launcher developed by ASELSAN Inc., with an experimental current waveform, is optimized. A multiobjective optimization study is conducted to get a minimum armature mass (i.e., to minimize parasitic mass and to maximize system efficiency) and to minimize the current density ripple on the saddle line (CDRSL) (i.e., to obtain homogeneous current density), including a minimum armature cross-sectional area constraint, which depends on the specific action value of the armature material. The armature parametric model is built within a 3-D finite-element environment, while the non-dominated sorting genetic algorithm II (NSGA-II) is employed within a numeric computing environment. These two software tools are integrated to achieve the optimal armature shape. Also, the effect of the contact resistance is investigated on the optimum armature, and it is observed that the contact resistance causes a more homogeneous current density in the armature–rail contact region. A 262-g armature is found to be the optimum and gives a more homogeneous current density distribution. The optimized armature reduces the mass by 12.6% and decreases CDRSL by 50.6%.
{"title":"Static Armature Shape Optimization for Electromagnetic Launchers Considering Specific Action","authors":"Görkem Gülletutan;Nail Tosun;Mustafa Karagöz;Baran Yıldırım;Zeynep Çöklü;Ozan Keysan","doi":"10.1109/TPS.2025.3619078","DOIUrl":"https://doi.org/10.1109/TPS.2025.3619078","url":null,"abstract":"ASELSAN Inc. has been working on electromagnetic launchers (EMLs) since 2014. The last prototype has a <inline-formula> <tex-math>$50times 60$ </tex-math></inline-formula> mm convex bore with a length of 6 m. The barrel design of an EML is important for high efficiency. One of the most important features of the barrel is the armature geometry. In this study, the shape of the armature of an EML, EMFY-4 launcher developed by ASELSAN Inc., with an experimental current waveform, is optimized. A multiobjective optimization study is conducted to get a minimum armature mass (i.e., to minimize parasitic mass and to maximize system efficiency) and to minimize the current density ripple on the saddle line (CDRSL) (i.e., to obtain homogeneous current density), including a minimum armature cross-sectional area constraint, which depends on the specific action value of the armature material. The armature parametric model is built within a 3-D finite-element environment, while the non-dominated sorting genetic algorithm II (NSGA-II) is employed within a numeric computing environment. These two software tools are integrated to achieve the optimal armature shape. Also, the effect of the contact resistance is investigated on the optimum armature, and it is observed that the contact resistance causes a more homogeneous current density in the armature–rail contact region. A 262-g armature is found to be the optimum and gives a more homogeneous current density distribution. The optimized armature reduces the mass by 12.6% and decreases CDRSL by 50.6%.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 11","pages":"3544-3553"},"PeriodicalIF":1.5,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-23DOI: 10.1109/TPS.2025.3621706
Lev A. Yurovskiy;Naum S. Ginzburg
This article suggest the method to enhance the intensity of terahertz (THz) super-radiance pulses (SR) obtained through the laser pulse backscattering on relativistic electron beams with frequency down-conversion by introducing an external resonator for both THz SR and laser pulses. Due to the reflection from the resonator mirrors, the process of generation will continue on the subsequent passes when both pump and scattered pulses intersect with electron beam. Such scheme with multiple backscattering allows increasing the peak power of the generated SR pulses, as well as its transformation into the periodic sequence. It has been shown that when $1~mu $ m laser pulse with energy of 3 kJ is repeatedly backscattering on 2 MeV/2 kA electron beam, it is possible to generate the periodic sequence of 3 THz SR pulses, with peak power about 2 MW and a duration of about 20 ps.
{"title":"Laser Pulse Multiple Backscattering on Relativistic Electron Beam for Generation of Sequence of Terahertz Pulses With Enhanced Intensity","authors":"Lev A. Yurovskiy;Naum S. Ginzburg","doi":"10.1109/TPS.2025.3621706","DOIUrl":"https://doi.org/10.1109/TPS.2025.3621706","url":null,"abstract":"This article suggest the method to enhance the intensity of terahertz (THz) super-radiance pulses (SR) obtained through the laser pulse backscattering on relativistic electron beams with frequency down-conversion by introducing an external resonator for both THz SR and laser pulses. Due to the reflection from the resonator mirrors, the process of generation will continue on the subsequent passes when both pump and scattered pulses intersect with electron beam. Such scheme with multiple backscattering allows increasing the peak power of the generated SR pulses, as well as its transformation into the periodic sequence. It has been shown that when <inline-formula> <tex-math>$1~mu $ </tex-math></inline-formula>m laser pulse with energy of 3 kJ is repeatedly backscattering on 2 MeV/2 kA electron beam, it is possible to generate the periodic sequence of 3 THz SR pulses, with peak power about 2 MW and a duration of about 20 ps.","PeriodicalId":450,"journal":{"name":"IEEE Transactions on Plasma Science","volume":"53 11","pages":"3603-3607"},"PeriodicalIF":1.5,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145493304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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