一般根据功率匹配一台变频器驱动一台电机，如果几台电机同步运行也可以共用一台功率相当的变频器。如果变频器的功率足够大电机功率可以无限小理论上可以控制无限台了，这要看变频器的功率和电动机的功率，一般一台变频器所控制的电动机功率只和要略小于该变频器的功率，还是要根据工作实际需要匹配的。

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