Development Of High Voltage Rectifier

Yusoff, Muhammad Ridwan (2017) Development Of High Voltage Rectifier. Technical Report. UTeM, Melaka. (Submitted)

Text Development Of High Voltage Rectifier - Muhammad Ridwan Yusoff - 24 pages.pdf - Submitted Version Download (576kB)

Abstract

A lot of researches and studies had been carried out on the non-ceramic (polymeric) insulation since it was well accepted and applied in high voltage engineering. One of the key indicators to determine the polymeric insulation performance is its tracking and erosion resistance. In order to study the tracking and erosion resistance of outdoor polymeric insulation, an Inclined Plane Tracking and Erosion (IPT) test is conducted according to standard BS EN 60587: 2007 under AC voltage. However, with the increasing of the HVDC systems across the global, then the polymeric insulation has to deal with the DC voltage. Therefore, the rectification of AC-to-DC voltage is compulsory in order to conduct the DC IPT test in high voltage laboratory. The aim of this project is to develop a full-wave bridge high voltage rectifier with the rated output voltage up to 6kV DC. In addition, the rectifier circuit is first simulated by using PSpice software to obtain simulation waveform of the desired DC output voltage. The simulation waveform obtained from PSpice shows that the DC output voltage is pure and it contains low ripple. By this simulation result, the hardware of the DC high voltage rectifier will be developed. The development of the high voltage rectifier will be using several power electronic components such as power diodes and power capacitors as the waveform filtering element. The power capacitors used have two different values of capacitance which are 0.01uF and 820pF. With 0.01uF capacitor, the ripple percentage of the rectifier when 6kV DC output voltage is 25.1%. Meanwhile, with 820pF capacitor, the ripple percentage of the rectifier when 6kV DC output voltage is 18.6%. Therefore, it is proven that the high voltage rectifier developed with 820pF capacitor has better performance compared to the rectifier that developed by using 0.01uF capacitor.

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