Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705435
Yuki Zenda, S. Takenouchi, M. Kozako, M. Hikita, T. Okamoto, Sun Jintong, A. Izumi, K. Karasawa
An increase in the capacitance of the stator winding of an inverter-fed motor increases the rise time of repetitive impulse voltage. It has been reported that partial discharge inception voltage (PDIV) of the windings decreases as the rise time increases. This paper deals with the effect of the rise time on PDIV of enamel twisted pair samples simulating the insulation system of the windings of inverter-fed motors under repetitive impulse voltage and high temperature environment. PDs were detected by a 10 mm diameter loop antenna sensor (LS) with a high-pass filter (395~3200 MHz), and repetitive PDIV (RPDIV) was measured using an automatic PD measurement system. Temperature dependence of RPDIV of the twisted pair sample with varying the rise time tr of the impulse voltage waveform. It was found that RPDIV at room temperature is almost the same regardless of tr, while in the high temperature region above 100 °C RPDIV decreases remarkably with increasing temperature and tr. The decrease in RPDIV with temperature rise can be interpreted in terms of the decrease in gas density with the temperature increase at the wedge-shaped gap formed by the twisted pair sample. In addition, a significant decrease in RPDIV was found to appear with increase in tr in the high temperature region. The result is considered to be caused by increase in the probability of initial electron supply for triggering discharge with increase in tr.
{"title":"Effect of Temperature on RPDIV of Enamel Twisted Pair under Repetitive Impulse Voltage Application with Different Rise Time","authors":"Yuki Zenda, S. Takenouchi, M. Kozako, M. Hikita, T. Okamoto, Sun Jintong, A. Izumi, K. Karasawa","doi":"10.1109/CEIDP50766.2021.9705435","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705435","url":null,"abstract":"An increase in the capacitance of the stator winding of an inverter-fed motor increases the rise time of repetitive impulse voltage. It has been reported that partial discharge inception voltage (PDIV) of the windings decreases as the rise time increases. This paper deals with the effect of the rise time on PDIV of enamel twisted pair samples simulating the insulation system of the windings of inverter-fed motors under repetitive impulse voltage and high temperature environment. PDs were detected by a 10 mm diameter loop antenna sensor (LS) with a high-pass filter (395~3200 MHz), and repetitive PDIV (RPDIV) was measured using an automatic PD measurement system. Temperature dependence of RPDIV of the twisted pair sample with varying the rise time tr of the impulse voltage waveform. It was found that RPDIV at room temperature is almost the same regardless of tr, while in the high temperature region above 100 °C RPDIV decreases remarkably with increasing temperature and tr. The decrease in RPDIV with temperature rise can be interpreted in terms of the decrease in gas density with the temperature increase at the wedge-shaped gap formed by the twisted pair sample. In addition, a significant decrease in RPDIV was found to appear with increase in tr in the high temperature region. The result is considered to be caused by increase in the probability of initial electron supply for triggering discharge with increase in tr.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"24 1","pages":"603-606"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85447062","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705332
Berihu Mebrahtom, S. Matharage, Qiang Liu, C. Krause, A. Gyore, L. van der Zel
This paper discusses the challenges faced during the development of a dual-temperature test cell based on IEC technical specification TS 62332-1 to evaluate the ageing performance of transformer insulation systems. A dual-temperature test cell was built based on IEC TS 62332-1 and the performance of the test cell was investigated accordingly. Apart from measuring the conductor and the top liquid temperatures, additional temperature measurements were conducted in other locations including hot solid insulation, cold solid insulation, liquid immersion heaters and test cell surface. Temperature distribution inside the dual-temperature test cell is then analyzed. The results indicate the importance of location of top liquid temperature thermocouples and its effect on the overall temperature distribution. Some additional aspects for maintaining consistency between different test cells are also discussed.
{"title":"Understanding the Temperature Profile of the IEC TS 62332-1 Dual-temperature Ageing Cell","authors":"Berihu Mebrahtom, S. Matharage, Qiang Liu, C. Krause, A. Gyore, L. van der Zel","doi":"10.1109/CEIDP50766.2021.9705332","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705332","url":null,"abstract":"This paper discusses the challenges faced during the development of a dual-temperature test cell based on IEC technical specification TS 62332-1 to evaluate the ageing performance of transformer insulation systems. A dual-temperature test cell was built based on IEC TS 62332-1 and the performance of the test cell was investigated accordingly. Apart from measuring the conductor and the top liquid temperatures, additional temperature measurements were conducted in other locations including hot solid insulation, cold solid insulation, liquid immersion heaters and test cell surface. Temperature distribution inside the dual-temperature test cell is then analyzed. The results indicate the importance of location of top liquid temperature thermocouples and its effect on the overall temperature distribution. Some additional aspects for maintaining consistency between different test cells are also discussed.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"17 1","pages":"93-96"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85382607","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705467
Iman Shirzaei Sani, É. David, N. Demarquette
Dielectric performance of recycled city and industrial waste PE was investigated in comparison with virgin PE. The possibility of using industrial and city waste polymers as insulation of power cables was studied. The results of dielectric spectroscopy revealed higher values of both imaginary and real parts of permittivity for recycled PE. Dielectric loss of city and industrial waste PE was almost 10 and 4 times higher than that of virgin PE, respectively. The imaginary part of permittivity was almost constant for virgin and industrial waste polymers in the range of measured frequencies. In contrast, the imaginary permittivity of city waste PE was increasing in the low frequencies range and an interfacial relaxation peak was observable. The breakdown strength of recycled city waste PE, when measured using the short-term procedure, was found to be slightly lower than that of pure PE.
{"title":"Dielectric properties of recycled city and industrial waste polyethylene","authors":"Iman Shirzaei Sani, É. David, N. Demarquette","doi":"10.1109/CEIDP50766.2021.9705467","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705467","url":null,"abstract":"Dielectric performance of recycled city and industrial waste PE was investigated in comparison with virgin PE. The possibility of using industrial and city waste polymers as insulation of power cables was studied. The results of dielectric spectroscopy revealed higher values of both imaginary and real parts of permittivity for recycled PE. Dielectric loss of city and industrial waste PE was almost 10 and 4 times higher than that of virgin PE, respectively. The imaginary part of permittivity was almost constant for virgin and industrial waste polymers in the range of measured frequencies. In contrast, the imaginary permittivity of city waste PE was increasing in the low frequencies range and an interfacial relaxation peak was observable. The breakdown strength of recycled city waste PE, when measured using the short-term procedure, was found to be slightly lower than that of pure PE.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"93 1","pages":"49-52"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82387655","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705475
F. O. Bahdad, L. Chen, S. Rowland
Sulphur hexafluoride (SF6) is an insulating medium widely used in the power industry due to its high dielectric strength and arc quenching capability. There is a growing interest in identifying an environmentally friendly alternative to SF6 and a mixture of C3F7CN and CO2 is one potential candidate. This project investigates the effect of different electrode materials on the breakdown performance of the aforementioned gas mixture over 300 breakdowns under negative DC. Three sets of rod-plane electrodes manufactured in stainless steel, aluminum and brass are tested for a fixed gap distance of 3 mm and pressure of 4.8 bar absolute. The results show that stainless steel has the highest breakdown voltage and the lowest change in surface roughness compared to aluminum and brass. The post-testing gas analyses have shown negligible reduction in the C3F7CN content after 300 breakdowns.
{"title":"Negative DC Breakdown Characteristics of C3F7CN and CO2 Mixture with Different Electrode Materials","authors":"F. O. Bahdad, L. Chen, S. Rowland","doi":"10.1109/CEIDP50766.2021.9705475","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705475","url":null,"abstract":"Sulphur hexafluoride (SF6) is an insulating medium widely used in the power industry due to its high dielectric strength and arc quenching capability. There is a growing interest in identifying an environmentally friendly alternative to SF6 and a mixture of C3F7CN and CO2 is one potential candidate. This project investigates the effect of different electrode materials on the breakdown performance of the aforementioned gas mixture over 300 breakdowns under negative DC. Three sets of rod-plane electrodes manufactured in stainless steel, aluminum and brass are tested for a fixed gap distance of 3 mm and pressure of 4.8 bar absolute. The results show that stainless steel has the highest breakdown voltage and the lowest change in surface roughness compared to aluminum and brass. The post-testing gas analyses have shown negligible reduction in the C3F7CN content after 300 breakdowns.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"94 1","pages":"510-513"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83398838","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705318
Ningzhen Wang, Kerry Davis, Michael Sotzing, Mohamadreza Arab Baferani, Jindong Huo, C. B. Carter, R. Gerhard, Yang Cao
Flexible ferroelectret-polymer films are piezoelectric due to macro-dipoles that consist of charge layers with opposite polarity across deformable internal cavities and can thus be suitable for wearable energy-harvesting devices. 3D printing of ferroelectrets could increase the design variability of cavity structures, enhance performance and extend application possibilities. In this work, three polypropylene (PP) ferroelectrets with ellipsoidal cavities, but different in porosity and sample thickness were printed by means of Fused Filament Fabrication. After the samples had been polarized via a corona discharge, their piezoelectric performance was characterized by measuring short-circuit current (Isc) and open-circuit voltage (Voc) responses under the same cyclic compressive force. It was found that the PP ferroelectret with a porosity of 25% performed best with Isc of 0.65 μA and Voc of 65 V, and that the peak-to-peak output power decreases with decreasing porosity. A clear influence of sample thickness and cavity geometry was not observed. Our results provide design guidance for the future optimization of the porous structure of ferroelectrets and promote the development of energy harvesting devices for wearable electronics.
{"title":"Flexible nanogenerator with 3D-printed ferroelectrets","authors":"Ningzhen Wang, Kerry Davis, Michael Sotzing, Mohamadreza Arab Baferani, Jindong Huo, C. B. Carter, R. Gerhard, Yang Cao","doi":"10.1109/CEIDP50766.2021.9705318","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705318","url":null,"abstract":"Flexible ferroelectret-polymer films are piezoelectric due to macro-dipoles that consist of charge layers with opposite polarity across deformable internal cavities and can thus be suitable for wearable energy-harvesting devices. 3D printing of ferroelectrets could increase the design variability of cavity structures, enhance performance and extend application possibilities. In this work, three polypropylene (PP) ferroelectrets with ellipsoidal cavities, but different in porosity and sample thickness were printed by means of Fused Filament Fabrication. After the samples had been polarized via a corona discharge, their piezoelectric performance was characterized by measuring short-circuit current (Isc) and open-circuit voltage (Voc) responses under the same cyclic compressive force. It was found that the PP ferroelectret with a porosity of 25% performed best with Isc of 0.65 μA and Voc of 65 V, and that the peak-to-peak output power decreases with decreasing porosity. A clear influence of sample thickness and cavity geometry was not observed. Our results provide design guidance for the future optimization of the porous structure of ferroelectrets and promote the development of energy harvesting devices for wearable electronics.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"15 1","pages":"375-378"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75873370","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705341
F. Lin, H. Xing, Jingjing Yang, Wentao Lin, Yongji Ma, Lijun Jin
In this paper, the typical disk suspension porcelain insulators in transmission and distribution lines were taken as the research object, the infrared image differences between low/zero insulators and normal insulators were analyzed, and the low/zero fault diagnosis of porcelain insulator was carried out by HSV color space image recognition technology constructively. Firstly, the prediction model of porcelain insulator deterioration was constructed by using YOLOv3 algorithm, and the smallest rectangular area of insulator was extracted from the infrared image. Then the insulator was segmented from the rectangular region by using K-means algorithm to avoid background interference. On this basis, the normalized values of HSV color space features, including the maximum and minimum values of H component, the average value of S component and the maximum value of V component, were drawn according to the long axis direction by using the rotating rectangle to correct the insulator image. Combined with the correlation between HSV components and temperature rise, the detection criterion of low/zero fault of porcelain insulator is deduced, the operation state evaluation of insulator is accomplished.
{"title":"Low/Zero Fault Diagnosis of Porcelain Insulator Based on HSV Color Space Image Processing Technology","authors":"F. Lin, H. Xing, Jingjing Yang, Wentao Lin, Yongji Ma, Lijun Jin","doi":"10.1109/CEIDP50766.2021.9705341","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705341","url":null,"abstract":"In this paper, the typical disk suspension porcelain insulators in transmission and distribution lines were taken as the research object, the infrared image differences between low/zero insulators and normal insulators were analyzed, and the low/zero fault diagnosis of porcelain insulator was carried out by HSV color space image recognition technology constructively. Firstly, the prediction model of porcelain insulator deterioration was constructed by using YOLOv3 algorithm, and the smallest rectangular area of insulator was extracted from the infrared image. Then the insulator was segmented from the rectangular region by using K-means algorithm to avoid background interference. On this basis, the normalized values of HSV color space features, including the maximum and minimum values of H component, the average value of S component and the maximum value of V component, were drawn according to the long axis direction by using the rotating rectangle to correct the insulator image. Combined with the correlation between HSV components and temperature rise, the detection criterion of low/zero fault of porcelain insulator is deduced, the operation state evaluation of insulator is accomplished.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"53 1","pages":"143-146"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81475743","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705360
Joyce Jacob, B. V. Kumar, P. Preetha, T. Sindhu
The operating life and efficiency of a transformer depends on the electrical and thermal performance of its insulation system. The present work involves the preparation and thermal characterization of mineral oil and natural ester nanofluids. An electro-thermal analogous model is developed to determine the thermal resistance and thermal capacitance of the unfilled and nanofilled oils. Simulation model of unfilled and nanofilled oils using Comsol Multphysics is developed to obtain the temperature time plot, from which the values of the thermal resistance and thermal capacitance of the unfilled and nanofilled oils are calculated. The simulation results are validated experimentally. It is observed that the thermal resistance and thermal capacitance values of both mineral oil and natural ester obtained from simulation and experiment decrease with the addition of nanoparticles. This indicates an improvement in the heat distribution and dissipation in nanofluids when compared to the unfilled counterparts, rendering them better insulating oils for transformers.
{"title":"Thermal Modelling of Mineral Oil and Natural Ester Nanofluids","authors":"Joyce Jacob, B. V. Kumar, P. Preetha, T. Sindhu","doi":"10.1109/CEIDP50766.2021.9705360","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705360","url":null,"abstract":"The operating life and efficiency of a transformer depends on the electrical and thermal performance of its insulation system. The present work involves the preparation and thermal characterization of mineral oil and natural ester nanofluids. An electro-thermal analogous model is developed to determine the thermal resistance and thermal capacitance of the unfilled and nanofilled oils. Simulation model of unfilled and nanofilled oils using Comsol Multphysics is developed to obtain the temperature time plot, from which the values of the thermal resistance and thermal capacitance of the unfilled and nanofilled oils are calculated. The simulation results are validated experimentally. It is observed that the thermal resistance and thermal capacitance values of both mineral oil and natural ester obtained from simulation and experiment decrease with the addition of nanoparticles. This indicates an improvement in the heat distribution and dissipation in nanofluids when compared to the unfilled counterparts, rendering them better insulating oils for transformers.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"16 1","pages":"339-342"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78826564","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705440
Sneha Satish Hegde, P. Notingher, J. Laurentie
In this paper, the responses to the application of thermal pulses on space charge containing medium thickness polyethylene samples (50-100 µm) coated with thin and thick semicon electrodes is studied through simulations. Surface temperature, signal amplitude and signal dynamics are analyzed in order to assess the feasibility of experimental setups without affecting the state of the sample and also allowing high sensitivity/resolution measurements near the interface between a semiconductor layer and an insulating layer.
{"title":"Considerations on using Thermal Pulses for Space Charge Measurements in Medium Thickness Insulating Samples","authors":"Sneha Satish Hegde, P. Notingher, J. Laurentie","doi":"10.1109/CEIDP50766.2021.9705440","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705440","url":null,"abstract":"In this paper, the responses to the application of thermal pulses on space charge containing medium thickness polyethylene samples (50-100 µm) coated with thin and thick semicon electrodes is studied through simulations. Surface temperature, signal amplitude and signal dynamics are analyzed in order to assess the feasibility of experimental setups without affecting the state of the sample and also allowing high sensitivity/resolution measurements near the interface between a semiconductor layer and an insulating layer.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"236 1","pages":"643-646"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83662403","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705441
Birender Singh Thind, C. Reddy
In the offshore transmission systems, the converters are used for AC to DC and DC to AC conversion. The utilization of HVDC cable transmission over AC transmission in offshore wind farms is quite efficient. On the DC side, the polymeric insulated cables are stressed by the DC voltage with huge amount of ripple content. The accelerated aging tests were performed to confirm the effect of the ripple voltage on the degradation of the cable insulation. The breakdown tests were performed on LDPE samples using ripple voltage with frequency of 500 Hz superimposed on DC voltage. This work investigates the effect of ripple voltage on the life of the offshore HVDC cable, that it is always important to consider interactions of all the system components while designing the cable insulation.
{"title":"Effect of Ripple in DC on Voltage Endurance Coefficient of Cable Insulation Based on Damage Equalization Method","authors":"Birender Singh Thind, C. Reddy","doi":"10.1109/CEIDP50766.2021.9705441","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705441","url":null,"abstract":"In the offshore transmission systems, the converters are used for AC to DC and DC to AC conversion. The utilization of HVDC cable transmission over AC transmission in offshore wind farms is quite efficient. On the DC side, the polymeric insulated cables are stressed by the DC voltage with huge amount of ripple content. The accelerated aging tests were performed to confirm the effect of the ripple voltage on the degradation of the cable insulation. The breakdown tests were performed on LDPE samples using ripple voltage with frequency of 500 Hz superimposed on DC voltage. This work investigates the effect of ripple voltage on the life of the offshore HVDC cable, that it is always important to consider interactions of all the system components while designing the cable insulation.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"56 1","pages":"535-538"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86412367","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}
Pub Date : 2021-12-12DOI: 10.1109/CEIDP50766.2021.9705470
G. Selleri, M. Gino, L. Gasperini, M. Zanoni, C. Gualandi, M. L. Focarete, D. Fabiani
This paper deals with the optimization of the piezoelectric performances of nanofibrous membranes. Both ceramic and polymeric piezoelectric nanofibers are manufactured via electrospinning and polarized in order to align the ferroelectric domains and enhance the piezoelectric response of the mats. By investigating the electrical properties of the embedding mediums where the nanofibers were immerged during the polarization, it is possible to identify a proper configuration that maximize the dipoles alignment. The measured piezoelectric responses of the produced nanofibrous mats result comparable with commercial stiff piezoelectric samples ones.
{"title":"Study on the polarization process for piezoelectric nanofibrous layers","authors":"G. Selleri, M. Gino, L. Gasperini, M. Zanoni, C. Gualandi, M. L. Focarete, D. Fabiani","doi":"10.1109/CEIDP50766.2021.9705470","DOIUrl":"https://doi.org/10.1109/CEIDP50766.2021.9705470","url":null,"abstract":"This paper deals with the optimization of the piezoelectric performances of nanofibrous membranes. Both ceramic and polymeric piezoelectric nanofibers are manufactured via electrospinning and polarized in order to align the ferroelectric domains and enhance the piezoelectric response of the mats. By investigating the electrical properties of the embedding mediums where the nanofibers were immerged during the polarization, it is possible to identify a proper configuration that maximize the dipoles alignment. The measured piezoelectric responses of the produced nanofibrous mats result comparable with commercial stiff piezoelectric samples ones.","PeriodicalId":6837,"journal":{"name":"2021 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)","volume":"24 1","pages":"61-64"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79176889","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：