A06B-6071-K203

A06B-6071-K203一拖多同时启动控制变频器选择

　　在用一台变频器同时控制多台电机启动、停止时，由于电机的数量比较多，主要应考虑的问题就是如何计算选择出型号合适的变频器。可以根据变频器下面两个方面的经验进行选型。

　　①变频器容量选择

　　选择变频器的额定容量要大于或者等于多台电机容量之和。

　　②变频器电流选择

　　变频器的额定工作电流应大所有电机额定电流的总和的1.2倍以上。多台电机同时启动时同时满足这两个条件是比较。

　　一拖多同时启动控制注意事项

　　在一拖多同时启动的场合下，变频器只能使用开环V/F工作模式，其原因是在转矩矢量控制模式中，变频器需要检测电动机的有关参数如定子绕组的电阻、定子绕组的漏电抗等，显然不适合一拖多同时启动的情形。

A06B-6071-K203 

A06B-6071-K203

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