航空交流电弧特性及检测算法研究

Research of the Characteristic and Detect Algorithm AC Arc Fault in Aircraft

介绍了航空交流电弧电流和电压的基本特性。对电弧电流在频域和时域条件下异于正常情况的特性进行了研究,并将电弧电流的非平稳特性作为电弧检测判据的重要特征,设计了一种基于多种判据的电弧故障断路器(AFCI)。它将电弧的一些较为显著的特征转化为CPU可识别的电信号,并通过CPU软件算法实现航空交流电弧检测,为航空电气系统的安全性提供了保证。

Describe the basic characteristics of the arc current and voltage in aircraft, research the characteristics of arc current which different from the normal state in the frequency domain and time domain, design an arc fault circuit interrupter （AFCI） by a variety of criterion based on the non-stationary characteristics of the arc current. It transforms some notable features of arc signal into the signal, which the CPU can recognize and achieve arc detection by the algorithm of software in CPU, provide a guarantee for the safety of electrical systems in aircraft