In order to solve the problems of the excessive amount of superconducting tape and the excessive heat leakage power of the current lead due to the superconducting component participating in the normal current flow of the traditional resistive superconducting current limiter

the topological structure of a new type of hybrid superconducting current limiter which is suitable short circuit protection of DC power supply suitable for medium voltage ships is proposed. The joint commutation process based on IGBT and high-speed vacuum switch is experimentally researched and theoretically calculated

and the influence of capacitance

inductance

resistance and other parameters on the commutation process is obtained；The inductance of the high-temperature superconducting assembly

which is composed of superconducting tape discs which is made by the disc non-inductive winding

is only 2.6 μH；The contact movement characteristics of the high-speed vacuum switch for the current limiter are introduced；Finally

the prototype of the current limiter is tested

and the prototype successfully limits the short circuit current with the prospective peaks of 57.6 kA within 24 kA. The commutation of current at 7.7 kA is completed under the condition of the short-circuit current rise rate at 34 A/μs

the commutation time is only 61 μs

and the maximum capacitor voltage is 1 170 V. The arc-free breaking of the high-speed vacuum switch is achieved.