A Novel Inductive Pulsed Power Supply Consisting of a Three-Winding Pulse Transformer With Parallel Switching Scheme

Abstract

Inductive pulsed power supply (IPPS) is considered as an alternative to capacitive one due to its higher energy density. An opening switch is necessary for an IPPS because it interrupts the charging circuit and transfers the stored energy to the load. A major technical challenge inherent to the IPPS is the overvoltage across the opening switch, i.e., the open-circuit voltage. Moreover, obtaining a larger current, especially with a steeper rising edge, will further increase the open-circuit voltage. A novel IPPS based on a three-winding pulse transformer, consisting of two primary windings and one secondary winding, is presented in this article to improve the output current and reduce the open-circuit voltage. The two primary inductors adopted a parallel switching scheme, namely, series charging and parallel discharging. Its working principle is analyzed first in detail. The theoretical analysis and simulation results have verified the superiority of the novel IPPS in improving the output current and reducing the open-circuit voltage.