Search results for "Rectified waveform"

showing 2 items of 2 documents

Partial discharges behavior under different rectified waveforms

2017

In this work, a previous software used to simulate partial discharges (PDs) under Alternating Current (AC) stress has been modified in order to evaluate the PDs behavior under a voltage stress close to the Direct Current (DC) waveform. By using a full-wave and a half-wave rectifier, the specimen with an air void defects has been subjected to a gradual constant stress. Finally, a capacitive filter has been inserted in order to produce a steadier voltage supply. Simulation results show that under an almost DC waveform, the PDs activity become less compared to AC stress.

010302 applied physicsDC stressMaterials scienceHVDCPD modelbusiness.industryAcousticsCapacitive sensingDirect currentElectrical engineeringRectified waveform01 natural sciencesSpace charge010305 fluids & plasmaslaw.inventionStress (mechanics)RectifierSettore ING-IND/31 - Elettrotecnicalaw0103 physical sciencesWaveformPartial DischargebusinessAlternating currentVoltage
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Partial discharge behavior under single phase half and full-bridge rectifier

2017

The aim of the present work is to simulate partial discharges (PDs) phenomena under voltage stress close to the Direct Current (DC) waveform. The employed waveforms have been realized by using a full-wave and a half-wave rectifiers. After that, in order to generate a steadier voltage supply, a capacitive filter has been inserted in the output of the half-wave rectifier. Simulations have been carried out by modifying a previous software used in the case of Alternating Current (AC). Finally, experimental tests have been carried out in order to validate simulation results.

Materials sciencePD model020209 energyCapacitive sensing02 engineering and technology01 natural scienceslaw.inventionRectifierControl theorylaw0103 physical sciences0202 electrical engineering electronic engineering information engineeringWaveformElectrical and Electronic Engineering010302 applied physicsHVDCElectronic Optical and Magnetic MaterialDirect currentDC streRectified waveformSettore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaFilter (video)Partial dischargePartial DischargeAlternating currentVoltage
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