PROJECT TITLE :

A Transformer-less Bipolar/Unipolar High-Voltage Pulse Generator with Low-Voltage Components for Water Treatment Applications - 2017

ABSTRACT:

Pulsed electric field could be a commonly used and effective disinfection technique in drinking water treatment applications. In this paper, a transformerless unipolar/bipolar high-voltage pulse generator is presented with well-regulated pulsed output voltage for drinking water treatment via underwater pulsed corona discharge. The proposed high-voltage pulse generator is fed from a relatively low-voltage dc offer. Then, capacitor–diode voltage multiplier centrally fed from a dc–dc boost converter is employed to elevate the input voltage to a correct high-voltage level. Finally, a modular multilevel converter is employed to chop the elevated voltage into unipolar or bipolar pulsed output voltage (based on the user selection). The instructed arrangement provides a high-voltage gain with comparatively low-voltage components, i.e., neither high-voltage nor series-connected parts are needed within the proposed approach. A comparison between the proposed approach and the opposite Marx-Based mostly pulse generators has been held to show the deserves of the proposed approach. A detailed style of the generator passive elements and semiconductor devices has been presented. Simulation and experimental results are presented for the unipolar also because the bipolar pulsed output to validate the proposed concept.