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The answer is yes

Let’s find out why with Safesav

The voltage will change after the frequency converter converts the frequency. As far as the current inverter is concerned, no matter what the control method is, if the speed is adjusted below the base frequency and the output frequency is changed, the output voltage will definitely change. If the speed is adjusted above the base frequency and the output frequency is changed, the output voltage will be constant (the rated voltage of the motor). constant.

The torque of an asynchronous motor is produced by the interaction between the motor's magnetic flux and the current flowing through the rotor. At the rated frequency, if the voltage is determined and only the frequency decreases, the magnetic flux is too large and the magnetic ring is saturated. If the situation is serious, the engine will be burned out. Therefore, the frequency and voltage should be changed proportionally, that is, the frequency of the V80 inverter will also change with the change of frequency, so that the magnetic flux of the motor remains constant to avoid the occurrence of field weakening and magnetic saturation. In addition, the reason why the frequency converter must change the voltage at the same time when changing the frequency is: the torque of the asynchronous motor is generated by the interaction between the magnetic flux of the motor and the current flowing through the rotor. At the rated frequency, if the voltage is determined and only the frequency decreases, the magnetic flux is too large and the magnetic ring is saturated. If the situation is serious, the engine will be burned out.

Therefore, the frequency and voltage must change proportionally, that is, the frequency changes when controlling the inverter output voltage, so that the flux of the motor can be maintained to a certain extent and avoid field weakening and magnetic saturation. Therefore, a general frequency converter will automatically adjust the output voltage while changing the frequency.