Silica nanofilled varnish designed for electrical insulation of low voltage inverter-fed motors

Nguyen, Minh-Khai; Malec, David; Mary, D.; Werynski, P.; Górnicka, B.; Thérèse, L.; Guillot, Philippe

doi:10.1109/tdei.2010.5595535

Cited by 16 publications

(9 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental results of conduction current for standard and filled varnishes performed at room temperature have been reported in [4][5]. In nanofilled varnish, the conduction current level is slightly higher than the standard one whereas in microfilled varnish it is much higher (about two orders of magnitude at high field).…”

Section: A Conduction Currentmentioning

confidence: 99%

“…After the resin-filler mixing, different forms of these particles may be found in the final filled-polymer [6]: fragments, particles, aggregates and sometimes agglomerates. For micro-filled varnish, the size of these resulting aggregates may reach 10µm in length [5].…”

Section: A Studied Materialsmentioning

confidence: 99%

“…Inorganic particles are used in primary and secondary insulations of low voltage rotating machines in order to increase their lifetime when, by feeding by inverters, this insulation has to withstand a partial discharge (PD) activity [1][2][3][4][5]. The use of nanofillers in enamels gave some encouraging results and scientists have worked on developing such enamels [4][5].…”

Section: Introductionmentioning

confidence: 99%

“…The use of nanofillers in enamels gave some encouraging results and scientists have worked on developing such enamels [4][5]. The role of these particles is to decrease the PD induced erosion rate by decreasing collision energy by reflection and scattering.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental conduction current characteristics versus electric field and temperature are useful to explain the impact of the particle size on the DC dielectric strength. Indeed, in previous published research works, the DC dielectric breakdown of PEI has been assumed to be a thermal breakdown [4][5]. Taking into account the DC conductivity measurements of pure, nano-filled and micro-filled PEI, the theoretical DC breakdown will be estimated by resolving the thermal balance equation in order to correlate experimental and theoretical data.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Measurement and modelling of the DC dielectric strength of pure, nanofilled and microfilled polyetherimide resin

Mary¹,

Malec²,

Nguyen³

et al. 2011

2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

View full text Add to dashboard Cite

Results of DC breakdown strength of pure, nanoscalefilled and microscale-filled PEI varnishes are described and analyzed in this communication. Silica (10nm and 400nm) has been used as a filler to increase the lifetime of such varnishes submitted to a partial discharge activity (varnish to be used in rotating machines fed by inverters). Experimental results have shown that both dielectric strength and conduction current are affected by the fillers. The higher the conduction current, the lower the DC breakdown strength. The modelling has consequently been focused on the thermal breakdown theory to explain these experimental data.

show abstract

Section: A Conduction Currentmentioning

confidence: 99%

Section: A Studied Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Measurement and modelling of the DC dielectric strength of pure, nanofilled and microfilled polyetherimide resin

Mary¹,

Malec²,

Nguyen³

et al. 2011

2011 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

View full text Add to dashboard Cite

show abstract

Polymer Matrix Nanocomposites with 1D Ceramic Nanofillers for Energy Storage Capacitor Applications

Zhang

Marwat

Xie

et al. 2019

ACS Appl. Mater. Interfaces

202

103

View full text Add to dashboard Cite

Recent developments in various technologies, such as hybrid electric vehicles and pulsed power systems, have challenged researchers to discover affordable, compact, and super-functioning electric energy storage devices. Among the existing energy storage devices, polymer nanocomposite film capacitors are a preferred choice due to their high power density, fast charge and discharge speed, high operation voltage, and long service lifetime. In the past several years, they have been extensively researched worldwide, with 0D, 1D, and 2D nanofillers being incorporated into various polymer matrixes. However, 1D nanofillers appeared to be the most effective in producing large dipole moments, which leads to a considerably enhanced dielectric permittivity and energy density of the nanocomposite. As such, this Review focuses on recent advances in polymer matrix nanocomposites using various types of 1D nanofillers, i.e., linear, ferroelectric, paraelectric, and relaxor−ferroelectric for energy storage applications. Correspondingly, the latest developments in the nanocomposite dielectrics with highly oriented, surface-coated, and surface-decorated 1D nanofillers are presented. Special attention has been paid to identifying the underlying mechanisms of maximizing dielectric displacement, increasing dielectric breakdown strength, and enhancing the energy density. This Review also presents some suggestions for future research in low-loss, high energy storage devices.

show abstract

Evaluation of the electrical properties of epoxy-based nanocomposites for motor insulation

Vivo

Lamberti

Raimo

et al. 2011

8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics &Amp; Drives

View full text Add to dashboard Cite

Polymeric nanocomposites are increasingly adopted for replacing conventional insulation to provide enhanced performances such us reliability, environmental compatibility and power rating in new generation inverter-fed Adjustable Speed Drives electrical motors. This paper describes an experimental study aimed at evaluating the performances of several candidate nanocomposites obtained by adding different clays to an epoxy matrix already used for manufacturing motor insulation system. The electrical, thermal and mechanical properties of the nanocomposites are investigated in order to evaluate their performances as new impregnation materials in multilayered insulation systems. The effect of the different clays on the dc conductivity and permittivity is investigated as a function of the electric field and temperature applied to the nanocomposites

show abstract

Silica nanofilled varnish designed for electrical insulation of low voltage inverter-fed motors

Cited by 16 publications

References 17 publications

Measurement and modelling of the DC dielectric strength of pure, nanofilled and microfilled polyetherimide resin

Measurement and modelling of the DC dielectric strength of pure, nanofilled and microfilled polyetherimide resin

Polymer Matrix Nanocomposites with 1D Ceramic Nanofillers for Energy Storage Capacitor Applications

Evaluation of the electrical properties of epoxy-based nanocomposites for motor insulation

Contact Info

Product

Resources

About