Three phase asynchronous motor: how to distinguish electromagnetic speed regulating motor variable frequency speed regulating motor

Three phase asynchronous motor: what is speed regulating motor? Adjustable speed motor is a kind of motor which can change the speed of motor by changing the series, voltage, current frequency of motor, so that the motor can achieve high performance. The adjustable speed motor has been widely used in iron steel, power station, cable, chemical industry, petroleum, cement, textile, printing dyeing, papermaking, machinery other industrial departments for stepless speed regulation of load machinery with constant decreasing torque, especially for the pump fan load supporting with large flow change, which can obtain good energy saving effect.

Adjustable speed motor electromagnetic adjustable speed motor variable-frequency adjustable speed motor, the following with small make-up to see their differences.

The difference between frequency converter electromagnetic governor lies in the difference of control object control method. The frequency converter can adjust the speed of the motor by changing the frequency of the working power supply of the motor. The control object of the electromagnetic governor is the slip clutch of the electromagnetic speed regulating motor. By changing the excitation current of the slip clutch, the slip (slip) rate of the slip clutch is changed to achieve the speed regulating purpose.

The frequency conversion speed regulating motor is to change the original power frequency 50Hz to 0.2-400hz through the frequency converter, the principle is to change the frequency to change the speed of the motor; the electromagnetic speed regulating motor has a set of independent electromagnetic slip speed regulating device, the speed of the motor itself has no change, there are five lines of electromagnetic slip, two are 220 V power supply, three are signals feedback speed signals the governor, by changing The slip voltage controls the slip to change the output speed. The electromagnetic speed regulation is equivalent to a manual gearbox, because the motor speed is constant, so the torque is large.

Three phase asynchronous motor: different motors have different uses. It's suggested to make a general understanding before purchasing so as to better performance equipment.