变频器输入缺相保护回路设计  

The Design of a Input Phase Lack Protection Circuit for Frequency Converter

作　　者：张微[1] 张友军[1] 陈昆鸿 林乐斌[1] 王雅莉[1] 

机构地区：[1]苏州大学机电工程学院,江苏省苏州市215021 [2]苏州士林电机有限公司,江苏苏州市215009

出　　处：《电源世界》2014年第12期35-38,共4页The World of Power Supply

基　　金：江苏省大学生实践创新训练计划项目;苏州大学生课外学术科研基金项目

摘　　要：变频器作为一个新兴产业正处于蓬勃发展之中,其保护功能也越来越完善。本文介绍一种实用的变频器输入缺相保护回路,在常规输入缺相保护回路基础上串联电容进行隔直;分析了其数学模型,并利用Simtrix仿真软件对线路进行仿真。此保护回路已经在最新开发的系列产品中得到了应用,具有成本低、可靠性高、保护及时等特点。Frequency Converter as an emerging industry is booming, and its protecting function is becoming more and more perfect. In this paper, a practical input phase lack protection circuit for inverter is designed, which add capacitor for blocking DC current on the basis of general input phase lack protection loop;analyzing the mathematical model, and then simulating the circuit with the Simtrix. The protection circuit has been applied in the latest production with its characteristics of low cost, high reliability, and the timely manner in protection.

关 键 词：变频器 缺相检测 电容隔直 光耦隔离 

分 类 号：TN86[电子电信—信息与通信工程]