Is the speed of three-phase asynchronous motor the same under no-load and load conditions? We know that the motor speed is related to the power supply frequency and the number of motor poles, and the rotor speed of the asynchronous motor will be smaller than the rotating magnetic field speed of the stator, that is, there is slip. Then then with Senli motor Xiaobian simple understanding.

       In the no-load state of the motor, the operation is very easy, the corresponding current is small; However, when the load is added to the motor, the motor speed will be slow, so the speed of the asynchronous motor in the load state is smaller than the no-load state.

       Theoretically, the output power of the motor is determined by the load. From the motor input current can also be seen, no load, the motor current is small, indicating that the motor output is also small.

When the motor load increases, the resistance moment increases, causing the speed to decrease, the speed difference between the motor rotor and the rotating magnetic field becomes larger, causing the input current to increase, and the motor power rises. On the contrary, when the load is reduced, the resistance moment is reduced, causing the speed to increase, the speed difference between the motor rotor and the rotating magnetic field to become smaller, causing the input current to become smaller, and the motor power to decrease.

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