Charging Current Control for Capacitor Discharge Type Pulse Voltage Generator by Using Partial Rated Converter

This paper proposes a charge current controller based on a concept of partial-rated converter for capacitor discharge type pulse voltage generators. The required rated voltage of the partial converter can be 10% ∼ 20% of the system voltage rating of the pulse voltage generator. This paper presents an example of control method for this charge current controller and its pre-charge operation for capacitors. A laboratory-scale prototype was fabricated and experimental verification with the prototype was conducted. An estimation of the volume increase in capacitors is presented as a case study. The estimation indicates that the volume increase in capacitors by adding the proposed current controller is 3% for the case.