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Acoustic and optical methods for measuring electric charge distributions in dielectrics
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TLDR
In this paper, a review of the recent advances in acoustic and optical methods for measuring charge distributions in dielectrics is given, which mainly covers the past research activities associated with that at our laboratory and some of the results that enabled us to gain physical insights into the charge dynamics within solid plate samples and coaxial cables.Abstract:
Much progress had been made during the last two decades in acoustic and optical methods for measuring charge distributions in dielectrics. A review on this topic is given, which mainly covers the past research activities associated with that at our laboratory. For acoustic methods, we will discuss andoompare the pulsed electroacoustic (PEA) and pressure wave propagation (pwP) methods and present some of the results that enabled us to gain physical insights into the charge dynamics within solid plate samples and coaxial cables. For optical methods, we will discuss the Pockels effect technique that is used for the dynamic measurement of surface charge distributions, and the Kerr effect technique that is developed for measuring electric field distributions within liquid dielectrics.read more
Citations
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Charge transport modeling in insulating polymers: from molecular to macroscopic scale
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Relation between space charge accumulation and partial discharge activity in enameled wires under PWM-like voltage waveforms
TL;DR: In this article, the relation between partial discharge quantities (e.g., inception voltage, repetition frequency, amplitude) and electrical properties, associated with charge accumulation, which can be directly evaluated through space charge measurements.
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Bringing an insulation to failure: the role of space charge
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Modification of electrical properties and performance of EVA and PP insulation through nanostructure by organophilic silicates
Gian Carlo Montanari,Davide Fabiani,Fabrizio Palmieri,Dirk Kaempfer,Ralf Thomann,Rolf Mülhaupt +5 more
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References
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Ellipsometry and polarized light
TL;DR: In this article, the polarization of light waves and propagation of polarized light through polarizing optical systems are discussed. But the authors focus on the application of ellipsometry in the field of measurement in ellipsometer systems.
Journal ArticleDOI
Pulsed electroacoustic method for measurement of charge accumulation in solid dielectrics
Ying Li,M. Yasuda,Tatsuo Takada +2 more
TL;DR: In this paper, the pulsed electroacoustic (PEA) method is used to measure the space charge distribution with or without DC electrical stress, not only in free-standing dielectric plates but also directly in coaxial cables.
Journal ArticleDOI
Measurement of spatial charge distribution in thick dielectrics using the pulsed electroacoustic method
TL;DR: In this article, a pulsed electroacoustic transducer was used to measure the volume charge distribution in polymethylmethacrylate (PMMA) during and after electron-beam irradiation.
Journal ArticleDOI
Evidence of strong correlation between space-charge buildup and breakdown in cable insulation
TL;DR: In this paper, the authors used the PWP method to monitor the charge distribution as a function of time under dc stress in high insulating thickness cable and showed that for certain insulation systems the space charge buildup can increase the local field to a value which is more than 8/spl times/the applied electric field, leading to breakdown.
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