Impulse Voltage Generator (Low Voltage Impulse)

Zulrahim, Muhamad (2009) Impulse Voltage Generator (Low Voltage Impulse). Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This report covers the development of impulse voltage generator beginning the building of 2kV rectifier using two centre-tapped transformers in order to generate the 2kV impulse voltage. The wave shape that is being generated is the 1/1000 us impulse. The purpose of this project is to study the characteristic of voltage surges by generating an artificial lightning since lightning surges does not only propagate into high voltage translnission line but also into the low voltage line and electronic devices that can cause severe damages to the components. Although there is lightning protector devices invented such as Metal Oxide Varistor (MOV), the exposure to lightning impulse for several times can cause damages to the device due to the Inultiple overvoltage and overcurrent produced by these flashes. TIllS surge is a transient electrical disturbance that is cause by lightning, switching operation or faults. Although a natural lightning stroke is actually made up of· a multiple strokes, up to 27 strokes per flash, which were specified in the Standard lInpulse Testing Procedures, the impulse voltage generator in tlllS project producing only a single stroke. Due to the failure to of the rectifier to rectify the 2kV DC output, the further developnlent of the project was being halted for a few months. The developnlent was being continued after it has been decided to use a voltage nlultiplier for the supply purpose. Unfortunately, the wave shaping circuit does not work well and not even a single spark is created. Therefore, due to the lack of progress, the objective of the project does not been achieved.

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