Development of Improved Superconducting Pulsed Power Supply using Three-Winding Pulsed Power Transformer with Energy Recovery

The advantages of superconducting pulsed power supplies (SPPS)-such as higher energy density, extended storage time, low losses, and fewer power requirements for power source charging-have increased in popularity. A prior study presented an improved SPPS capable of energy recovery by adjusting two capacitors in a switching circuit to promote residual energy recovery. However, there are still unresolved issues; while the energy recovery can be improved further, the output peak current cannot attain higher levels. This article discusses the implementation of a three-winding pulse transformer (TWPT) to increase the load current and two capacitors in the switching circuit to improve the recovery of residual energy at a consistent rate. The single secondary winding of the TWPT is made of copper, whereas the two main windings are composed of superconducting tape. Theoretical and simulation modelling demonstrates that the load current increases by 29% and the total energy recovery increases by 2.9% at a constant 25 Hz operating frequency.