This paper proposes a new high-voltage Pulse Generator (PG), fed from low voltage dc supply Vs. This input supply voltage is utilized to charge two arms of N series-connected modular multilevel converter sub-module capacitors sequentially through a resistive-inductive branch, such that each arm is charged to NVs. With a step-up nano-crystalline transformer of n turns ratio, the proposed PG is able to generate bipolar rectangular pulses of peak ±nNVs, at high repetition rates. However, equal voltage-second area of consecutive pulse pair polarities should be assured to avoid transformer saturation. Not only symmetrical pulses can be generated, but also asymmetrical pulses with equal voltage-second areas are possible. The proposed topology is tested via simulations and a scaled-down experimentation, which establish the viability of the topology for water treatment applications.
|Number of pages||6|
|Publication status||Published - 1 Oct 2017|
|Event||IEEE Energy Conversion Congress & Exposition - Cincinnati, United States|
Duration: 1 Oct 2017 → 5 Oct 2017
|Conference||IEEE Energy Conversion Congress & Exposition|
|Abbreviated title||ECCE 2017|
|Period||1/10/17 → 5/10/17|
- pulse generator
- modular multilevel converter (MMC)
- nano-crystalline transformer
- bipolar pulses
- rectangular pulse-waveform
Elgenedy, M. A., Massoud, A. M., Holliday, D., Ahmed, S., & Williams, B. (2017). Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications. Paper presented at IEEE Energy Conversion Congress & Exposition, Cincinnati, United States.