用超导磁体制造NMR、MRI等核磁共振设备越来越普遍，超导磁体的失超保护在磁体设计中是一个很关键的问题．本文从失超保护方式，保护电路设计、加速失超方法等三个方面总结了如何为一个超导磁体尤其是核磁共振用超导磁体设计失超保护方案，指出了一些常见的问题的解决办法，最后还介绍并比较了一些常用失超模拟软件，以期为相关科研人员提供有价值的参考．
Superconducting magnet technology is increasingly used in manufacture of MRI and NMR apparatus. Quench protection is an issue of great importance for the design of a superconducting magnet system. On the basis of references in the recent years, three aspects, passive or active protection method, protection circuit and quench ac- celeration are summarized and analyzed. Some commonly used software for quench simulation is introduced and compared as well.
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