摘要
船舶电网的电磁滤波器的性能优化可提高舰船电网设备抗干扰性能。由于舰船在恶劣的环境下工作,舰船电网的干扰过程较为复杂,干扰中的低频噪声混淆特征明显,谐波干扰频率呈现多样性、叠加性、非线性的特征极其明显。传统的电磁波滤波器设计以信噪比异常特征过滤为基础,存在低频段区域敏感性过高的问题,无法对低频部分的谐波干扰进行信号提纯,现有滤波器无法做到自适应频率阀值调节,过滤效果不好。提出一种自适应舰船电网谐波干扰电磁滤波器设计方法,给出了滤波器的总体结构,设计的硬件模块由电感器、电容器、开关电源模块以及传导发射模块等模块组成,给出了差模干扰和共模干扰下,两种插入损耗的等效电路,软件是由自适应软件过滤算法构成,经过自适应滤波处理的过程,完成电磁滤波器元件的校核处理过程,实现舰船电网谐波干扰下电磁滤波器自适应噪声抑制。实验结果说明,所设计的电磁滤波器达到预期的控制效果,可对复杂舰船电网谐波干扰进行有效的滤波处理。
The good performance of filter of ship power is related to the merits of the ship power grid equipment anti-interference. The paper put forward a design method of adaptive electromagnetic ship power grid harmonic interference filter, gave the overall structure of the filter, the design of hardware module by inductor, capacitor, switch power supply module and conducted emission module modules. Differential mode interference and common mode interference were given under two kinds of insertion losses of the equivalent circuit, the software was composed of adaptive software filtering algorithm. Through the processing of the adaptive filter, the checking process of filter element of electromagnetism,was carried out to realize the adaptive noise suppression under the disturbance of power grid harmonic electromagnetic filter. Experimental results indicate that the magnetic filter can reach the expected control effect.
出处
《计算机仿真》
CSCD
北大核心
2015年第1期425-429,共5页
Computer Simulation
关键词
电网谐波干扰
电磁波
滤波器
Power grid harmonic interference
Electromagnetic waves
Filter
