Fretsaw Motor manufacturers inventory the matching relationship between the frequency conversion cabinet and the frequency conversion motor
With the rotation of the impeller, fans, water pumps, oil pumps and other equipment, as the speed decreases, the torque is reduced by the square of the speed, and the power required by the load is proportional to the third power of the speed. When the required air volume and flow are reduced, the frequency converter can be used to adjust the air volume and flow through speed regulation, which can greatly save electricity. Since the required power at high speed increases too fast with the speed, the fan and pump load should not be operated at a frequency exceeding the rated frequency.
In some machine tool spindles, rolling mills, paper machines, and plastic film production lines, the required torques for coilers and uncoilers are generally inversely proportional to the speed, which is a value power load. The constant power nature of the load should be in terms of a certain speed range. When the speed is very low, it will change to a constant torque load under the restriction of mechanical strength. When the motor is adjusting the speed with constant magnetic flux, it is a constant torque speed regulation; while it is a constant power speed regulation when the field weakening speed is adjusted.
Post time: Nov-09-2021