开关电源滤波器设计及性能仿真研究  

Design and Performance Simulation of Switching Power Filter

作　　者：丁国臣 王翠珍 邵红 张芳 DING Guochen;WANG Cuizhen;SHAO Hong;ZHANG Fang(Qingdao Branch of Naval Aviation University,Qingdao 266041,China)

机构地区：[1]海军航空大学青岛校区,山东青岛266041

出　　处：《电工技术》2023年第8期124-126,133,共4页Electric Engineering

摘　　要：介绍了开关电源传导噪声的产生原因和消除方法,分析并仿真了开关电源滤波器的主要部件共模扼流圈、共模噪声滤波器和差模噪声滤波器的电路结构及其滤波特性,仿真研究了开关电源滤波器对共模噪声和差模噪声的传输特性,研究结果表明电源滤波器对共模噪声信号具有较好的抑制能力,对高于设计频率的差模噪声信号,频率越高滤波效果越好。The causes and elimination methods of conducted noise in switching power supplies are introduced,and the circuit structure and filtering characteristics of the main components of switching power supply filters,common-mode chokes,common-mode noise filters and differential-mode noise filters,are analyzed and simulated.The transmission characteristics of switching power supply filters to common-mode noise and differential-mode noise are simulated and studied.The results show that the power filter has good rejection ability for common-mode noise signals,and the higher the frequency of the differential-mode noise signal higher than the design frequency,the better the filtering effect.

关 键 词：开关电源 滤波器 共模噪声 差模噪声 共模扼流圈 仿真 

分 类 号：TN911[电子电信—通信与信息系统]