Control method of frequency converter without feedback of current transformer

The invention discloses a frequency converter control method without adopting current transformer feedback, and relates to the technical field of frequency conversion control, and the method comprisesthe following steps: S1, removing a current transformer from a frequency converter control line, and guaranteeing that a system has no hardware fault; S2, adjusting the control mode of the frequencyconverter into current open-loop control; S3, selecting a lifting mode of the frequency converter as a current lifting mode; S4, starting automatic parameter setting of the frequency converter, and meanwhile, automatically setting reference values of the current, the voltage, the frequency, the rotating speed and the torque of the load motor as rated values of the motor; S5, selecting and settingan output filter of the frequency converter as a filter; S6, adjusting the current modulation depth of the frequency converter, and limiting the maximum output current of the electric frequency converter; accurate control of th