变频空调EMI分析整改方法及实例
EMI Analysis and Rectification Methods for Variable Frequency Air Conditioner with Case Studies

变频空调电磁兼容性(EMC)一直以来是产品设计开发周期中的主要节点。随着变频空调控制器设计呈现功能多元化、高频小型化、功率密度增大趋势，各种电子部件使用越来越多，使得变频空调EMC分析整改越发困难。其中，如何快速高效鉴别出变频空调电磁干扰(EMI)类别成分，并采取对应措施是解决问题的关键。本文结合作者对一款家用变频空调产品EMI的分析整改实例对分析整改方法进行论述。该方法对空调EMI干扰成分定位分析整改，具有可行性。
Electromagnetic compatibility (EMC) of variable frequency air conditioners has always been a critical aspect in the product design and development cycle. With the design of variable-frequency air conditioner controllers trending toward multi-functional features, high-frequency miniaturization, and increased power density, the growing use of various electronic components has made EMC analysis and rectification increasingly challenging. A key challenge lies in quickly and efficiently identifying the categories and components of electromagnetic interference (EMI) in variable frequency air conditioners and implementing corresponding corrective measures. This paper combines the author’s practical case study of EMI analysis and rectification for a household variable frequency air conditioner to discuss the methodology. The proposed approach demonstrates feasibility in locating, analyzing, and resolving EMI interference components in air conditioners.