家用空调系统传导电磁干扰建模  

Conducted EMI Modeling of Air-conditioning System

作　　者：曹雷 龚飞黄 陈恒林[1] CAO Lei;GONG Feihuang;CHEN Henglin(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《电工技术》2022年第13期27-30,共4页Electric Engineering

摘　　要：为了定量预测家用空调系统的电磁干扰(EMI)水平,给EMI滤波器设计提供理论依据,研究了一种家用空调系统传导EMI频域模型的建模方法。分析空调系统内部共模干扰和差模干扰的产生机理及传导路径,采用矢量匹配法建立电机负载的高频阻抗模型,分析EMI接收机算法并建立其数学模型,搭建空调系统传导EMI频域仿真模型。基于该方法对一台2300 W柜式空调进行建模,并通过实验验证了模型的准确性。To quantitatively predict the electromagnetic interference level of air-conditioning systems for the forward design of EMI filters,a frequency-domain simulation model of conducted EMI for air-conditioning system is proposed.Firstly,the generation mechanism and conduction path of EMI inside the air-conditioning system are analyzed.Secondly,the high frequency impedance model of the motor is established based on vector matching method.Thirdly,the algorithm of EMI receiver is analyzed and its mathematical model is established.Finally,a frequency-domain EMI model is established.Based on this method,a 2300 W cabinet type air conditioner is modeled.The measurement results of conducted interference verify the accuracy of the model.

关 键 词：电机驱动系统 电磁干扰 矢量匹配法 频域建模 

分 类 号：TN702[电子电信—电路与系统]