| Title |
Analysis and Design of a 3-phase Series-Resonant type High Voltage Capacitor Charger |
| Authors |
이병하(Lee, Byungha) ; 박상은(Park, Sangeun) ; 차한주(Cha, Hanju) |
| DOI |
https://doi.org/10.5370/KIEE.2013.62.4.510 |
| Keywords |
3-Phase series-resonant converter ; High voltage capacitor charger ; Pulsed power system |
| Abstract |
This paper suggests a 3-phase series-resonant type high voltage capacitor charger for an EML pulsed power system. The operating principle on the charger is explained by an equivalent circuit. Additionally, we analyze the charging characteristic in one discontinuous conduction mode and three continuous conduction modes. The analysis shows that the resonant current per phase is two thirds of the 3-phase charger's average charging current and one third of the single-phase charger's average charging current with the same capacity. We suggest a design method of the 3-phase capacitor charger in each operational mode and present an example of 3.5 kW capacitor charger at {Ω}_s=0.33{Ω}_r. The 3.5 kW 3-phase capacitor charger prototype is assembled with a TI28335 controller and a 40 kJ, 7 kV capacitor. The design rules based on the analysis are verified by experiment. |