1785-L46C15
1785-L46C15
1785-L46C15
V/F控制，就是变频器输出频率与输出电压的比值为恒定值或成比例。例如，50HZ时输出电压为380V的话，则25HZ时输出电压为190V。 变频器采用V/F控制方式时，对电机参数依赖不大，V/f控制是为了得到理想的转矩-速度特性，基于在改变电源频率进行调速的同时，又要保证电动机的磁通不变的思想而提出的，通用型变频器基本上都采用这种控制方式。V/f控制变频器结构非常简单，但是这种变频器采用开环控制方式，不能达到较高的控制性能，而且，在低频时，必须进行转矩补偿，以改变低频转矩特性。3、V/F这种控制方式多用于风机、泵类节能型变频器。V与f的比例关系是考虑了电机特性而预先决定的。
备货，备货，降降降，火火火，火火火……
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