2021
DOI: 10.1109/tdei.2020.009114
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Abstract: This paper reports the effect of DC and pulse wave voltages on space charge characteristics of polyimide material for high-frequency insulation. The pulsed electroacoustic method is used to measure the charge distribution inside the material under the pulse wave voltages with different amplitudes, polarities, frequencies and duty ratios. Comparative results show that positive charge is more likely to accumulate inside the polyimide. The amount of accumulated charge under pulse wave voltages is larger than that… Show more

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Cited by 13 publications
(6 citation statements)
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“…The internal factors refer to material properties, such as curing agent type, filler properties, and modification treatment, while the external factors are highly associated with operating ambient, including temperature condition, applied electric field, humidity, and electrode status. [29,[33][34][35][36][37][38][39][40][41][42][58][59][60][61][62][63][64][141][142][143][144][145][146][147][148][149] In this section, we mainly focus on three types of EP-based dielectric materials, i.e., pure EP, EP impregnated paper (EIP) composites, and EP-based nanocomposites. A broad perspective on space charge behavior is placed based on the progress of experimental measurements with the consideration of varied internal and external factors.…”
Section: Experimental Study Of Space Charge Distribution In Ep-based ...mentioning
confidence: 99%
See 1 more Smart Citation
“…The internal factors refer to material properties, such as curing agent type, filler properties, and modification treatment, while the external factors are highly associated with operating ambient, including temperature condition, applied electric field, humidity, and electrode status. [29,[33][34][35][36][37][38][39][40][41][42][58][59][60][61][62][63][64][141][142][143][144][145][146][147][148][149] In this section, we mainly focus on three types of EP-based dielectric materials, i.e., pure EP, EP impregnated paper (EIP) composites, and EP-based nanocomposites. A broad perspective on space charge behavior is placed based on the progress of experimental measurements with the consideration of varied internal and external factors.…”
Section: Experimental Study Of Space Charge Distribution In Ep-based ...mentioning
confidence: 99%
“…The internal factors refer to material properties, such as curing agent type, filler properties, and modification treatment, while the external factors are highly associated with operating ambient, including temperature condition, applied electric field, humidity, and electrode status. [ 29,33–42,58–64,141–149 ]…”
Section: Experimental Study Of Space Charge Distribution In Ep‐based ...mentioning
confidence: 99%
“…To achieve this aim, it is needed to analyze the polarization state of the laser during its propagation process. The Stokes vector method is used here for analysis, and the polarization state of light can be represented by (12).…”
Section: B Transformation and Detection Of Polarized Light In Ellipsometry Detection Systemmentioning
confidence: 99%
“…Different insulating materials also show varying trap characteristics [7]- [9]. The existing researches under special electrical stresses within 500 Hz and polarity reversal conditions show that the accumulation of space charge can form instantaneously at the moment of voltage application or state transition [10]- [12]. Thus, a high measurement speed of charge methods is a necessary basis for tracking such fast-migrating charges.…”
Section: Introductionmentioning
confidence: 99%
“…These two phenomena can lead to overstress in some local parts of the motor winding. When electrical stress exceeds the partial discharge inception voltages (PDIV), PD occurs and this PD can accelerate the electrical ageing of the motor insulation causing insulation failure [1,2]. The complexity of impulse voltage parameters such as frequency, rise time and deadtime can influence PD and endurance features [3][4][5].…”
Section: Introductionmentioning
confidence: 99%