The characteristic of constant torque load is that the load torque has nothing to do with the speed, and the torque always remains constant or basically constant at any speed. Constant torque speed regulation is used to characterizeVariable frequency motorThe load capacity of this speed regulation does not refer to the actual load of the motor.
The characteristic of constant power load is that the torque required by the spindle of the machine tool and the rolling mill, the paper machine, the coiler and the uncoiler in the plastic film production line is roughly inversely proportional to the speed, which is the so-called constant power load. The constant power nature of the load should be in terms of a certain range of speed variations. When the speed is very low, limited by mechanical strength, the torque cannot be increased indefinitely, and it is transformed into a constant torque property at low speed.
The constant power zone and the constant torque zone of the load have influence on the selection of the transmission scheme. When the motor is regulated by constant flux, the maximum allowable output torque is unchanged, which belongs to the constant torque regulation. In the weak magnetic speed regulation, the maximum allowable output torque is inversely proportional to the speed, which belongs to the constant power speed regulation. ifVariable frequency motorWhen the range of constant torque and constant power speed regulation is consistent with the range of constant torque and constant power of the load, that is, the so-called"Normal"In this case, the capacity of the motor and the capacity of the inverter are minimum. This is easier to understand in terms of DC motor characteristics.
The above content is provided by the inverter motor manufacturer, Senli Motor. Our main products include: DC motor, torque motor, three-phase asynchronous motor, brake motor, single-phase motor and so on.
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