Compact pulsed power supply based on Tesla transformer for plasma reactors

Practical Design of a High-Voltage Pulsed Power Supply Implementing SiC Technology for Atmospheric Pressure Plasma Reactors

“…The proposed transformer construction allows for obtaining low magnetic coupling between transformer windings along with a small external magnetic field. The energy conversion efficiency of the constructed transformer prototype was similar or higher compared to similar constructions [14,21], but the EMC (electromagnetic compatibility) was significantly increased.…”

“…The disadvantage of the proposed topology is the high current amplitude on the primary side of the transformer, however, this a typical feature of this group of converters [14].…”

“…In order to keep the magnetic field of the Tesla coil-like transformer inside its magnetic construction, a core-based Tesla transformer design is proposed, as shown in Figure 5. Most Tesla-based transformers are coreless (air coupling) but there are also constructions with magnetic cores [14]. Low permeability magnetic cores (e.g., distributed gap cores) were used in the presented design, instead of air coupling, which allows for significant reduction in the size of the transformer, although there is still a problem with the external magnetic field (electromagnetic interference, i.e., EMI) [15].…”