Speaker
Description
Due to the fast response, high reliability and one-time-use property, explosive driven circuit-breaker known as pyrobreaker(PB) has been applied in several high power supply systems. This paper presents the designing process of a new two-section PB with the capability of opening a DC current of 70 kA under a voltage up to 20kV. In accordance with the CFETR (China Fusion Engineering Test Reactor) specifications, this switch will be applied as a back-up breaker for quench protection. Related simulations and calculations about the steady temperature rise, explosion process and commutation process are described in this paper, which fill the gap in the theoretical analyze for the designing of this kind of PBs. It will simplify the existing design method, which normally involves a great number of time-consuming and money-costing experiments. Several tests, including the steady state test and operation test, are conducted on the prototypes. The results verify the feasibility of the new model and demonstrate the reliability of the presented designing process.
| Eligible for student paper award? | No |
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