电感绕线设计对电磁干扰抑制的应用研究

Research on Application of Inductive Winding Design on Electromagnetic Interference Inhibition

Boost-PFC技术是解决空调产生谐波问题的重要手段,同时也是解决电路传导EMI的重要部分。电感是电路中的核心器件,其频率阻抗特性能够抑制线路传导的电磁干扰。文章分析了在相同的磁芯、绕线匝数下,绕线方式是影响电感分布电容的关键。实验数据得出,对半绕法在相同条件下较传统顺序绕法分布电容更低,高频阻抗值更高,可以有效抑制高频电磁干扰。

Boost-PFC technology is an important means to solve the harmonic problem of air conditioners,and it is also an important part of the circuit conduction EMI.Inductance is the core device in the circuit,and its frequency impedance characteristics can suppress electromagnetic interference of line conduction.The article analyzes the key to the same core,the wound turns,the winding method is the key to affect the inductive distribution capacitance.Experimental data is obtained,and the semicoperation method is lower than the conventional sequential winding distribution capacitance under the same conditions,high frequency resistance is higher,and high frequency electromagnetic interference can be effectively suppressed.