浅谈变频器的保护及应用

Discussion on Protection and Application of Converter

围绕变频器阐述了电动机的允许持续电流和工作频率的关系,分析了电子热保护器的反时保护功能、过电流、过电压、欠电压产生的原因,提出变频器过电流、过电压、欠电压保护措施。并分析了过热保护、负载侧接地保护等变频器的其它保护功能。

Around the converter elaborates the relationship of allowed continuous current and operating frequency of the motor,analyzes the inverse time protection function of electronic thermal protection device,the causes of over-current,over-voltage,under voltage,proposes protection measures of over-current,over-voltage,under voltage of converter.And analyze other protection functions of converter,such as thermal protection,load side grounding protection and so on.