Vector control makes up for the shortcomings of traditional variable voltage and frequency conversion methods.

It can match DC motor in the speed range and control the torque generated by asynchronous motor. It can not only match the DC motor in the speed range, but also control the torque generated by the asynchronous motor. Because the vector control mode is based on the precise parameters of the controlled asynchronous motor, some general frequency converters need to input the parameters of the asynchronous motor accurately, while others need to use speed sensors and encoders.