科研之友
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摘要
In order to explore the feasibility of using pulsed power supplies based on high temperature superconducting magnets energy storage (SMES) for synchronous induction electromagnetic launch, we studied a hybrid meat-grinder pulsed power supply circuit with high-temperature superconducting induction-capacitance, and then designed and manufactured a small high-temperature superconducting pulsed transformer. We also proposed a pulsed current forming scheme of the high-temperature superconducting pulsed transformer that applies the meat-grinder topology circuit. The scheme was demonstrated by simulation and experiments using three coils as loads. At a temperature of 77 K, current pulses with amplitude within 2.35~3.04 kA are obtained when the storage current value is 96 A, which is likely to meet the demands of electromagnetic launch application at 20 K. The results indicate that the proposed pulsed power supply is feasible. Meanwhile, since the load impedance of wire and the resistance of transformer secondary coil remarkably affect the load current in electromagnetic launch, they need to be kept at low level in application.
