AMAT 70318697000输入沟通电源过压
种状况是指输入电压逾越正惯例模，通常发作在节假日负载较轻，电压添加或下降

而线路呈现毛病，此刻最好断开电源，查看、处理。
2、发电类过电压
这种状况呈现的概率较高，首要是电机的同步转速比实践转速还高，使电动机处于

发电状况，而变频器又没有设备制动单元，有两起状况能够致使这一毛病。
AMAT 70318697000当变频器拖动大惯性负载时，其减速时刻设的对比小，在减速进程中，变频器输

出的速度对比快，而负载靠本身阻力减速对比慢，使负载拖动电动机的转速比变频

器输出的频率所对应的转速还要高，电动机处于发电状况，而变频器没有能量回馈

单元，因而变频器支流直流回路电压添加，超出维护值，呈现毛病，而纸机中常常

发作在枯燥有些，处理这种毛病能够添加再生制动单元，或许修正动频器参数，把

变频器减速时刻设的长一些。添加再生制动单元功用包含能量耗费型，并联直流母

线吸收型、能量回馈型。能量耗费型在变频器直流回路中并联一个制动电阻，经过

查看直流母线电压来操控功率管的通断。并联直流母线吸收型运用在多电机传动系

统，这种体系通常有一台或几台电机常常作业于发电状况，发作再生能量，这些能

量经过并联母线被处于电动状况的电机吸收。能量回馈型的变频器网侧变流器是可

逆的，当有再生能量发作时可逆变流器就将再生能量回馈给电网。

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