Ningzhen Wang, R. Daniels, Liam Connelly, J. Ronzello, G. Sotzing, Yang Cao
{"title":"All-organic flexible ferroelectret nanogenerator for wearable electronics","authors":"Ningzhen Wang, R. Daniels, Liam Connelly, J. Ronzello, G. Sotzing, Yang Cao","doi":"10.1109/CEIDP49254.2020.9437514","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437514","url":null,"abstract":"Piezoelectric nanogenerators used for energy harvesting in wearable electronics require flexibility, durability, and skin compatibility. Previous work has identified expanded polytetrafluoroethylene (ePTFE) as a potential candidate. A ferroelectret film was prepared by laminating ePTFE membranes and two fluorinated ethylene propylene (FEP) films using hot pressing, and injecting charges through corona discharge process. Using conductive fabric containing poly(3,4- ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) as electrodes, an all-organic nanogenerator was obtained. The open- circuit voltage and short-circuit current were measured to characterize the piezoelectric response. The short-circuit current was found to be approximately 50 nA for one layer of ePTFE membrane (15 × 15 mm2) under light pressure from one finger, and no increase in current and voltage was found from additional ePTFE layers. The polarizability and charges stability of the FEP/ePTFE/FEP film were also evaluated. The flexible ferroelectret nanogenerator can be embedded into clothes or insole and is expected to power continuously future wearable electronics system.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123892226","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}
J. F. Alves, F. S. I. Sousa, R. Altafim, L. D. de Oliveira, J. P. D. do Carmo, R. Altafim
{"title":"An accelerometer based on thermoformed piezoelectrets with open-tubular channels","authors":"J. F. Alves, F. S. I. Sousa, R. Altafim, L. D. de Oliveira, J. P. D. do Carmo, R. Altafim","doi":"10.1109/CEIDP49254.2020.9437446","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437446","url":null,"abstract":"Ferro- or piezoelectrets (especially thermoformed multilayer systems), developed at the beginning of 2000, exhibit flexibility and high piezoelectricity as their major properties. These materials have led to significant technological advances in several applications, including sensors and transducers, such as underwater ultrasound and accelerometers. This paper introduces a new approach for the production of an accelerometer. A piezoelectret prepared with an open tubular-channel structure was employed as a mass-sensor. The accelerometer was built in an aluminum housing with an encapsulated mass and tested in a standard shaker, which produced vibrations in up to 4.5 kHz frequency range. The results show a linear behavior from 1.1 kHz to 4 kHz, which is in good agreement with a commercial accelerometer.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114232591","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}
{"title":"Preliminary Estimation of The Effect of Insulation Losses on HVDC Cable Reliability","authors":"B. Diban, G. Mazzanti, I. Troia","doi":"10.1109/CEIDP49254.2020.9437504","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437504","url":null,"abstract":"Insulation losses in HVDC cables are mostly deemed negligible compared to conductor losses, but this might not always be the case, especially for innovative cable designs. This paper aims at a preliminary evaluation of the effect of insulation losses on the temperature rise in the insulation of HVDC XLPE-insulated cables subject to load cycles according to CIGRÉ Technical Brochure 496. The ultimate goal is finding the voltage values above which insulation losses lead to a non-negligible increase of insulation temperature, thereby affecting life and reliability of HVDC cables. The results show that the effect of insulation losses on the loss of life is deemed negligible. Thus, insulation losses can have an impact only on the thermal stability of cables, not on the loss of life itself.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124088886","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}
{"title":"Comparison of Different Insulating Liquids for PCB Embedded Power Modules","authors":"Ouassim Agri, E. Vagnon, A. Zouaghi, J. Augé","doi":"10.1109/CEIDP49254.2020.9437524","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437524","url":null,"abstract":"PCB embedded technology is a promising packaging method for power electronics devices. But the increase of the voltage rating and the cooling needed induce new issues in the insulation and the thermal management. In traditional power modules, thermal and insulation management are decoupled. Using a dielectric liquid could be an interesting solution for addressing both issues simultaneously. In this paper, the insulation management in PCB embedded power modules is investigated under AC 50 Hz high voltage waveform. Partial discharges (PDs) and breakdown voltage (BDV) measurements are performed on PCB substrates which represents the electrical constraints that we could find in a 3D switching cell. The PCB substrate is embedded in three different dielectric liquids: Paratherm, Nytro Taurus and Midel 7131. The results show a better performance in the Midel 7131 based on its PDIV and BDV values. The BDV results show that the agitation of the liquid may have a negative effect on the insulation performance.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126322614","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}
{"title":"Influence of pollution and defects on the surface electric field distribution of overhead line HV composite insulator","authors":"Y. Yahoui, J. Castellon, S. Agnel, C. Pons","doi":"10.1109/CEIDP49254.2020.9437495","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437495","url":null,"abstract":"Digital tools may be an excellent alternative to experimental measurement techniques to assess the influence of various parameters on the behavior of an overhead line type composite insulator. This paper aims at studying the influence of size and position of certain defects present in the insulators, as well as the influence of pollution on the surface of composite overhead line insulators, on the axial and radial components of the electric field. We have shown that pollution discontinuities and peeling off, especially with the presence of water, located near the application of HV, induce the most significant field variations.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128179344","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}
{"title":"Tensile Strength of Thermally Aged Silicone Layers with Graphite Filler","authors":"M. Aganbegović, P. Werle","doi":"10.1109/CEIDP49254.2020.9437545","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437545","url":null,"abstract":"In order to improve thermal and electrical properties of insulating materials, they are modified with micro- or nanoscopic fillers. This fillers have however also an influence on the mechanical properties of the material [1]–[2]. Therefore, in this contribution the mechanical tensile strength and the elongation at break of thermally aged silicone elastomers were investigated. Silicone samples with different amounts of microscopic graphite filler were prepared. Also layered samples are used with one layer made of pure silicone without fillers and the other made of the same base silicone, mixed with a specific amount of microscopic graphite filler. It is expected the individual layers to have different tensile strengths. The samples were prepared and tested according to the standard DIN 53504:2017 03 (ISO 37). The investigation shows that the filler has an influence on the tensile properties of aged and unaged silicone.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130160602","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}
Kaisei Enoki, H. Miyake, Y. Tanaka, Yoshitaka Miyaji, Hirotaku Ishikawa, K. Tajiri, H. Shiota
{"title":"Measurements of charge distributions in insulation materials of power electronics equipment irradiated by proton / electron","authors":"Kaisei Enoki, H. Miyake, Y. Tanaka, Yoshitaka Miyaji, Hirotaku Ishikawa, K. Tajiri, H. Shiota","doi":"10.1109/CEIDP49254.2020.9437461","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437461","url":null,"abstract":"Recently, the high performance and high reliability materials on the power electronics devices have been studied. Those devices are used in severe environments, such as high temperature, radiation, vacuum environment, and so on. In this study, we focused on the effect of space charge accumulation in the bulk of dielectrics by the radiation, such as the proton and/or the electron beams. So, we measured space charge distributions on insulating materials for the power electronics devices irradiated by proton/electron using the pulsed electroacoustic (PEA) method. As a result, the charges due to irradiated protons and electrons were confirmed to accumulate in the bulk at the calculated penetration depth, and the electric fields were emphasized 1.3 and 1.2 times larger than that of non-irradiated samples for the proton and electron irradiations, respectively. It is considered that those appearances of the electric field distribution had been occurred by charge accumulation by irradiation, modification of molecules structure, radio activation, and an increase of conductivity. To clarify this assumption, further investigation will be carried out in our future study.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131826738","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}
Q. Wang, Yifei Wang, H. Nguyen, Jindong Huo, J. Ronzello, Yang Cao
{"title":"Influence of ZnO Nanoparticles on the Light Absorption Spectrum of PMMA for Ablation Dominated Arc Interruption","authors":"Q. Wang, Yifei Wang, H. Nguyen, Jindong Huo, J. Ronzello, Yang Cao","doi":"10.1109/CEIDP49254.2020.9437555","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437555","url":null,"abstract":"Ablative materials are urgently needed for arc extinction cases like switchgears and breakers. Optical radiation is one of the major ways to dissipate the energy of the arc. It has been claimed that using extremely small sized particles could shift the absorption spectrum of the base material providing a potential way/method to manufacture polymer based ablative materials. PMMA has excellent transmittance and can be easily made into film by solution casting. Besides, PMMA doped with nanocomposites could be coated on other materials to form an ablation resistance coating layer. Nanoscale ZnO was adopted as the filler. The ZnO nanoparticles were dispersed in PMMA/solvent solution before the casting. SEM was used to check the dispersion of the filler. And spectrums from 150 nm to 500 nm of the films with/without quantum dots were measured respectively, to explore the shifting effect of optical property. The formation conditions and dispersion of ZnO nanoparticles in PMMA film was derived. Spectrums of PMMA films with different contents of ZnO were measured. Also, the polymer sample with a coating of PMMA-ZnO nanocomposite was prepared. Based on the results, the ZnO nanoparticles shows an impressive improvement on the ability of optical absorption. And the size of nanoparticle has a significant influence on the absorption characteristic. Considering the agglomeration problem we found, additional procedures must be taken to get a better dispersion including ultrasonic dispersion and using other chemicals. A new testing system with corresponding simulation method to evaluate/investigate the ablative properties of the samples/polymer was also introduced/come up with.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130827899","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}
{"title":"Comparison of Extreme Value Distributions for Electrostatic Discharge Magnitudes in Spacecraft Charging Tests","authors":"A. Andersen, Julie Xie, Wousik Kim","doi":"10.1109/CEIDP49254.2020.9437468","DOIUrl":"https://doi.org/10.1109/CEIDP49254.2020.9437468","url":null,"abstract":"Electrostatic Discharge (ESD) induced by the accumulation of charge in the space environment is known to cause spacecraft anomalies and failures. While it is critical to estimate the worst-case expected ESD, sensitive radar instruments can be impacted by high rates of occurrence of very small ESD. To estimate the correct extreme behavior, it is important to select the correct extreme value distribution for extrapolation of test results limited in time and sensitivity. Quantile-quantile (Q-Q) analysis is used to compare electron beam-induced ESD test data to several statistical distributions used in the published literature. The best-fit distribution is shown to vary between tests on different materials; however, it is clear that power law distributions are not good approximations for low amplitude events. Q-Q analysis is a convenient graphical method for evaluating multiple theoretical extreme-value distributions simultaneously.","PeriodicalId":170813,"journal":{"name":"2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131043935","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}