Pulse current generator with fast rise time based on transformers and single active switch for plasma drilling

This paper presents a new pulse generator topology based on the flyback converter and the XRAM generator concept. The presented topology has the advantage of only requiring a single active switch which results in a simpler control and a higher robustness. Those requirements are essential for plasma drilling, for which the pulse generator has to operate in harsh environment with a high ambient temperature and high mechanical stresses. This paper presents the design procedure of the pulse transformer of the proposed topology and results for a first design.