现代飞艇通常被用于携带雷达、通信等大功率电子设备,所处电磁环境异常恶劣。因此,需要对艇载电源系统做电磁兼容处理。本文采用巴特沃斯型滤波器对电源系统滤波,通过合理的参数设计,得到理论EMI滤波器模型。通过实验验证,该滤波器对电源线传导电磁干扰具有良好的抑制作用。。 Modern airships are often used to carry high-power electronic equipment such as radar and communications, where the electromagnetic environment is extremely harsh. Therefore, on-board power system electromagnetic compatibility needs to be done. In this paper, the Butterworth filter is used to filter the power system, and the theoretical EMI filter model is obtained through reasonable parameter design. Through experimental verification, this filter has a good inhibitory effect on the power line conducted electromagnetic interference. .