Nano-dielectric materials in electrical insulation application

Kirkici, H.; Serkan, M.; Koppisetty, K.

doi:10.1109/iecon.2005.1569280

Cited by 14 publications

(7 citation statements)

References 11 publications

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“…In this study, an increase in the values of tan δ is obtained with addition of inorganic filler as a source of charge carriers [1]. In a polymeric system reduction of electrical conductivity can be created by the charge transport mechanism through various links and interaction zones [13]. It is observed from Figs.…”

Section: Fig 6(c)mentioning

confidence: 87%

Experimental Investigation on Dielectric and Thermal Characteristics of Nanosized Alumina Filler Added Polyimide Enamel

Sugumaran¹

2014

Journal of Electrical Engineering and Technology

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-The polymer nano composite possess good priority recently for engineering applications.Especially the electrical insulating materials attract the high performance of nano composites. In this work the ballmill synthesiation process of nano sized Alumina (Al 2 O 3 ), the preparation of new nano composite material with an content of enamel and synthesized Alumina as 1wt%, 3wt% and 5wt%. Experimental investigation has been carried out for the prepared nano composites materials with respect to dielectric parameter measurements such as dielectric loss (tan δ), dielectric constant (ε), dielectric strength under various temperature. The partial discharge level also measured for all the samples and the PD inception voltage is also observed and compared. Weight loss of the material has been analyzed through TGA. It has been experimentally proved that 3wt% of Alumina nano filler added enamel has significant improvement in the dielectric and thermal properties.

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Section: Fig 6(c)mentioning

confidence: 87%

Experimental Investigation on Dielectric and Thermal Characteristics of Nanosized Alumina Filler Added Polyimide Enamel

Sugumaran¹

2014

Journal of Electrical Engineering and Technology

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“…The passage of electrons through insulators by jumping from one energy level to another in the forbidden band due to the presence of impurities or structural defects was called as Hopping effect. It seems that from the electrodes, the electrons are believed to be ejected by either Schottky's emission effect or field emission effect [4]. Dielectric strength depends upon the environment, electrode type, electrode surface and the method of testing.…”

Section: Introductionmentioning

confidence: 99%

“…The dielectric property depends upon the atomic structure of the material. For crystals, the dielectric constant depends on the direction along materials [3][4][5]. The passage of electrons through insulators by jumping from one energy level to another in the forbidden band due to the presence of impurities or structural defects was called as Hopping effect.…”

Section: Introductionmentioning

confidence: 99%

Electrical and Thermal Characterization of Organic Varnish Filled with ZrO₂Nano Filler Used in Electrical Machines

Selvaraj¹,

Vijayaraj²,

Sugumaran³

2015

Journal of Electrical Engineering and Technology

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-In the last decade it has been witnessed significant developments in the area of nano particles and nano scale fillers on electrical, thermal, and mechanical properties of polymeric materials such as resins, varnishes, enamel and bakelites. The electric and thermal properties were more important in the electrical equipments for both steady state and transient state conditions. This paper deals with the characterization of the electric and thermal properties of the pure varnish and zirconia (ZrO 2 ) filler mixed varnish. The electric properties such as dielectric loss (tan δ), dielectric constant (ε), dielectric strength and partial discharge voltage were analyzed and detailed for different samples. It was observed that zirconia nano filler mixed varnish has the superior dielectric and thermal properties when compared to those of standard varnish. It has shown that at power frequency the 1wt% nano composite sample has the higher permittivity value when compared to other samples. It has been examined that the 1wt% sample was having higher inception and extinction voltages when compared to other samples. It has been observed that 1wt% sample has higher dielectric strength when compared with other samples. There has been an improvement of thermal property by adding few weight percent of zirconia nano fillers. There was not much variation in glass transition among the nano mixed composites. The weight loss was improved at 1wt% of the zirconia nano fillers.

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“…In the last few years, a great deal of attention has been given to the application of nano dielectrics in the field of electrical materials [2]. Nano dielectrics were a class of materials containing at least one phase at the nanometer scale.…”

Section: Introductionmentioning

confidence: 99%

Partial discharge characteristics of enamel filled with micro and nano composite of SiO2 and TiO2

Selvaraj¹

2013

IJSEA

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Partial discharges were in general a consequence of local electrical stress concentrations in the insulation or on the surface of the insulation. A wide group of discharge phenomena such as internal discharges occurring in voids or cavities within solid or liquid dielectrics, surface discharges appearing at the boundary of different insulation materials, corona discharges occurring in gaseous dielectrics in the presence of inhomogeneous fields and continuous impact of discharges in solid dielectrics forming discharge channels were included as partial discharges. It has been observed that the use of nano composites in the matrix of polymeric materials can greatly improve the thermal, mechanical and electrical properties of polymeric nano composites. A nano composite (TiO 2 +SiO 2 ) has been tested as nano filler. The micro particles of TiO 2 and SiO 2 are converted into nano particles with the help of ball mill. Scanning electron microscope (SEM) has been used to augment the particle size of nano composite. These nano composites were mixed with standard (Elmo Luft 1A-FD) enamel with help of ultrasonic vibrator. The partial discharge characteristics of enamel, micro composite (3:1, 1:3, 1:1 of SiO 2 and TiO 2 ) filled enamel and nano composite (3:1, 1:3, 1:1 of SiO 2 and TiO 2 ) filled enamel were detailed and analyzed. The partial discharge measurement was carried out in uniform field electrode configurations. The mixing of nano composites of SiO 2 and TiO 2 taken in the proportion of 1:3 with enamel has a significant improvement in the values of partial discharge inception and extinction voltage by 25% and 35% respectively when compared to the partial discharge inception and extinction voltage of the enamel. Similarly, the enamel filled with micro composites of SiO 2 and TiO 2 taken in the proportion of 1:3 has an increase of 19% and 35% in the values of partial discharge inception and extinction voltage respectively when compared to the partial discharge inception and extinction voltage of the enamel.

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Nano-dielectric materials in electrical insulation application

Cited by 14 publications

References 11 publications

Experimental Investigation on Dielectric and Thermal Characteristics of Nanosized Alumina Filler Added Polyimide Enamel

Experimental Investigation on Dielectric and Thermal Characteristics of Nanosized Alumina Filler Added Polyimide Enamel

Electrical and Thermal Characterization of Organic Varnish Filled with ZrO₂Nano Filler Used in Electrical Machines

Partial discharge characteristics of enamel filled with micro and nano composite of SiO2 and TiO2

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Nano-dielectric materials in electrical insulation application

Cited by 14 publications

References 11 publications

Experimental Investigation on Dielectric and Thermal Characteristics of Nanosized Alumina Filler Added Polyimide Enamel

Experimental Investigation on Dielectric and Thermal Characteristics of Nanosized Alumina Filler Added Polyimide Enamel

Electrical and Thermal Characterization of Organic Varnish Filled with ZrO2Nano Filler Used in Electrical Machines

Partial discharge characteristics of enamel filled with micro and nano composite of SiO2 and TiO2

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Electrical and Thermal Characterization of Organic Varnish Filled with ZrO₂Nano Filler Used in Electrical Machines