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Method and device for adjusting a permanent-excitation synchronous motor fed from a converter

机译:调节由变频器供电的永磁同步电动机的方法和装置

摘要

A process and device are disclosed for regulating a converter-powered, permanently excited synchronous motor (2) whose motor current is regulated in the base speed range depending on a predetermined motor current set value (IMset), a detected motor current real value (IMreal) and detected position signals (LR,S,T). In the field-weakening range, the motor current is regulated depending on a converter input current set value (IGset) which may be predetermined by the load of the synchronous motor (2), on a calculated converter input current real value (IGreal) and on a calculated preliminary control angle ( phi ) determined depending on the proportion of an actuating variable real value (USt) which exceeds a maximum actuating variable (UStmax). A converter-powered, permanently excited synchronous motor (2) can thus be regulated absolutely smoothly between the base speed range and the field-weakening range, amd vice versa, under all load conditions.
机译:公开了一种用于调节转换器驱动的永磁励磁同步电动机(2)的方法和装置,该电动机(2)的电动机电流根据预定电动机电流设定值(IMset),检测到的电动机电流实际值(IMreal)在基本速度范围内调节。 )和检测到的位置信号(LR,S,T)。在弱磁场范围内,根据转换器输入电流设定值(IGset)和调节后的输入电流实际值(IGreal)来调节电机电流,该转换器输入电流设定值可由同步电机(2)的负载预先确定。取决于计算的初步控制角(phi),该角度取决于超过最大调节变量(UStmax)的调节变量实际值(USt)的比例。因此,在所有负载条件下,都可以在基础速度范围和弱磁范围之间绝对平稳地调节由转换器供电的永久励磁同步电动机(2)。

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