三菱伺服电机HC-MFS053B

HC-MFS053B

HC-MFS053B

HC-MFS053B

菱变频器容量选择的具体方法及要点

一、什么是变频器容量
驱动电机的变频器容量（非功能性）可以从操作方法决定的能量流动变化情况来进行理解。
1、 加速或恒速操作时
变频器的效能是输出电流，也就是变频器能够给电机提供多少电流。变频器这种输出电流的效能可以由额定输出电流或过载能力来表示。
2、 减速操作时
由于变额器在减速操作时其驱动的电机变成发电机，能量的流动是从电机流向变频器，同变频器的加速或恒速操作相反，变频器的作用是要消耗这甚能量。
减速时电机负载返回的部分能量由电机消耗，而其余部分由变频器消耗。另外，由于这些返回的能量使变频器中平滑电容的端电压升高，当电压引到某一特定值时，就会产生再生能量消耗或能量返回供电电源侧， 能虽的流动情况如下图所示。

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