What is the relationship between the load current of the motor and the no-load current and power?

Update:23 Nov 2019
Summary:

It can also be seen from the current input from the mot […]

It can also be seen from the current input from the motor that the current of the motor is small at no load. The motor output is also small. (less than a fixed power).

The output of the motor changes as the load changes. The process is as follows:

When the load increases, the resistance torque increases, causing the speed to decrease, and the difference in the rotational speed between the rotor of the motor and the rotating magnetic field becomes large, causing the input current to increase and the motor power to rise.

On the contrary, when the load is reduced, the resistance torque is reduced, causing the speed to increase, the difference between the rotational speed of the motor rotor and the rotating magnetic field becomes smaller, causing the input current to become smaller, and the motor power drop is the field to quickly calculate the no-load current of the Tektronix motor. The numerical value of the mouth, it is derived from numerous test data. It conforms to the no-load current of the Taichung motor is generally 1/3 of its rated current. At the same time, it conforms to the practical experience: the principle of the no-load current of the Taichuang motor, which can be used without exceeding the capacity of kilowatts (refers to the old-fashioned and small-capacity Taichuang motor after maintenance). The mouth-opening capacity is about 80% off.

It means that the no-load current value of the general Taichuang motor is about 0.8 times the rated capacity of the Taichuang motor. The no-load current of the medium-sized, 4 or 6-pole Taichuang motor is 0.8 times that of the Taicang motor capacity; the new series, large capacity, and the number of poles with a small number of small-scale Taichung motors, the calculation of the no-load current is new. The number of poles is less than 60% for the old, old-fashioned series, the smaller capacity, and the pole number is more than 8 poles. The no-load current is calculated according to the small number of kilowatts, that is, the no-load current value is approximately equal to the capacity. Kilowatts, but generally less than kilowatts.