考虑寄生电容的长距离强电电流环通讯电路的研究  

Research on Long-distance Strong Electric Current Loop Communication Circuit including Parasitic Capacitance

作　　者：邹宏亮 左攀 解超群 

机构地区：[1]珠海格力电器股份有限公司,珠海519070

出　　处：《日用电器》2021年第9期86-89,共4页ELECTRICAL APPLIANCES

摘　　要：现阶段家用空调内外机间的通讯一般采用强电电流环通讯电路实现,但受到连接线寄生电容的影响,传统电流环通讯距离较短,通常只有30~50 m。针对该问题,本文在传统电流环通讯电路的基础上,设计了双环路控制方案,采用钳位分压,减弱了寄生电容对通讯信号的影响,极大地提高了通讯距离和抗干扰能力,对强电电流环通讯的研究具有一定的参考价值。At present,the communication between the indoor and outdoor units of the household air conditioner is generally realized by the strong current loop communication circuit,but due to the influence of the parasitic capacitance of the connecting line,the traditional current loop communication distance is relatively short,usually only 30~50 m.In the case of this problem,based on the traditional current loop communication circuit,this paper designs a dual-loop control scheme,using clamped voltage divider,which reduces the influence of parasitic capacitance on the communication signal,greatly improves the communication distance and anti-interference ability.The research of communication has certain reference value.

关 键 词：长距离 双环路 钳位分压 寄生电容 

分 类 号：TM925.12[电气工程—电力电子与电力传动]