2018
DOI: 10.1049/hve.2017.0074
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Abstract: High-voltage equipment involves both electrical and electronic components. In electrical power network, which consists of rotating machine, power transformers and transmission lines, field enhancement at critical regions can lead to local breakdown [partial discharges (PD)]. The continuous occurrence of PDs can lead to complete breakdown. While in large power equipment sharp edges can be avoided, this is not the case in power converter due to the miniature nature of the semiconductor device. Sharp edges can al… Show more

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Cited by 10 publications
(21 citation statements)
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“…Another significant result obtained in [14,39] is that the fast rise square voltage has the lowest PDIV while the sinusoidal voltage has the highest one. Moreover, it was reported in [14,39] that the number and magnitude of PDs decrease when the pressure of the liquid in the test cell increases. In other words, pressure can collapse the propagation of the streamers, and that is the great merit of liquid embedded power electronics used for the subsea application.…”
Section: Simulation and Modelling Of Electrical Insulation Weaknessesmentioning
confidence: 99%
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“…Another significant result obtained in [14,39] is that the fast rise square voltage has the lowest PDIV while the sinusoidal voltage has the highest one. Moreover, it was reported in [14,39] that the number and magnitude of PDs decrease when the pressure of the liquid in the test cell increases. In other words, pressure can collapse the propagation of the streamers, and that is the great merit of liquid embedded power electronics used for the subsea application.…”
Section: Simulation and Modelling Of Electrical Insulation Weaknessesmentioning
confidence: 99%
“…Thus, liquid embedded power electronics are investigated. In [14,39] PDs in liquid embedded power electronics under three different waveforms as sinusoidal (50 Hz) voltage, a slow rise bipolar square voltage with a rise time of 400 μs, and a fast unipolar positive and negative rise square voltage with a rise time of 100 ns were investigated. Both electrical and optical techniques were used to study PD behavior of IGBT insulation.…”
Section: Simulation and Modelling Of Electrical Insulation Weaknessesmentioning
confidence: 99%
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“…However, IGBT modules are subjected to PWM stress type and the studies in [19][20][21] show that PD behaviour under 50 or 60 Hz AC sinusoidal voltage is different from fast rise bipolar highfrequency square wave voltages. Thus, it calls a need for new standards to consider an actual test voltage for power electronic modules.…”
Section: Present Standards For Evaluation Of the Insulation System Ofmentioning
confidence: 99%