The difference between electronic governor and frequency governor on motor speed regulation
First, the speed regulation of the electronic governor is usually carried out by a single-phase motor. It can only adjust the motor speed by changing the resistance and capacitance of its connecting winding. However, speed does not change the output of the power supply, so this speed regulation is not completely an energy-saving speed regulation mode.
Secondly, the variable frequency governor connects the power supply originally directly input to the three-phase asynchronous motor with itself. At the same time, it uses the PWM and other electronic converter technology inside the equipment to make the power frequency AC rectified and inverted, and finally become the frequency controllable AC, and then input it into the motor, which means that the current has been processed once. At this time, the frequency is adjusted through V/F control, output torque control and vector control, and then the loop current is changed to achieve the effect of energy-saving operation, especially when the motor is under light load.
