Repetitive opening switches capable of handling 5000 Amps and holdoff voltage 10 kV operating in a very short time (approx. 1 micro sec) were designed. The maximum change of temperature during the effective time of the heat source and the cooling rate of the superconducting material were calculated. Different materials were examined in order to determine the most suitable materials to optimize acoustic matching for different interfaces. The problem of heat transfer was simulated numerically in order to establish the temperature distribution across the switch. The computer results for the different materials were used in order to determine the maximum operating conduction current that can be applied on these switches while they are operating in the free convection regime of liquid helium.
- Pub Date:
- Electric Potential;
- Heat Transfer;
- Temperature Distribution;
- Electronics and Electrical Engineering