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Pulsed electro-acoustic measurement system is one of the versatile systems for measurement of charges accumulated in dielectric materials. The charge is measured as a voltage signal observed at an amplifier output which gets input from an acoustic sensor. Because of limited frequency bandwidth of the acoustic sensor and amplifier, all experimentally acquired signals require processing technique like...
Space charge accumulation in dielectrics is an important phenomenon that needs to be fully understood for effective utilization of dielectric materials. Pulsed electro-acoustic method is one of the well-known techniques used to measure these space charges. However due to limited frequency bandwidth of sensor attached at ground electrode, the method requires signal processing technique like deconvolution...
Resolution is very important factor for measurements of space charge in dielectric materials. Various methods like pulsed-electroacoustic method, pulse propagation method, laser induced pressure propagation method are in vogue for measurement of space charges. Among these methods the pulsed electro-acoustic method is widely used for space charge measurement due to several advantages. Although definition...
Space charge accumulation in dielectrics is a hot topic among dielectric research group for more than a decade. The charge accumulation has been observed to be of various types like homo, hetero and packet charge, etc. Volume resistivity and its non-uniform distribution has been suspected for formation of space charge. The author has recently shown that apart from volume resistivity, diffusion coefficient...
Space charge measurement in dielectric materials is very important to understand breakdown mechanism in power cables. Among several methods like pulsed electro-acoustic method, pulse propagation method, laser induced pressure propagation, the pulsed electro-acoustic method is widely used for space charge measurement due to ease of application. However, the signal obtained in the method does not represent...
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