Electric Motor Torque Speed Curve

The power produced by the motor depends on the speed of the motor and is.

Electric motor torque speed curve.

Like pumps motors produce a torque speed curve of their own. At 60 hertz base motor speed both hp and torque are at 100 percent. The motoring region of the induction machine torque speed curve is the region of greatest interest. The plots below show a number of different torque speed curves due to differences in the motor designs.

The induction motor torque speed curve is typical of this type of motor having a low starting torque and a peak torque just below. In this overlay the shaded area reflects the. The torque speed curves shown below are actual curves for the green maxon motor pictured at right used by students in 2 007. The universal motor torque speed characteristic follows 1 x 2 relationship.

Normally at it s top at operating speed. Overlaying torque speed curves to match motors to pumps. The torque is the twisting force that makes the motor running and the torque is active from 0 to 100 operating speed. In this case the relatively large starting torque is achieved with realistic current values.

The linear model of a d c. Torque speed plots in the motoring region. Common features of interest are noted and discussed below. It is easier to show the relationship in the form of a curve fig.

The power is just peaking at around 6000rpm. Zero at 0 speed and. Figure 7 shows the torque speed characteristic as it might actually appear. The full torque from zero speed is a major advantage for electric vehicles.

The motor region of the torque speed curve. The x axis is motor speed from 0 to 120 hertz. Motor torque speed curve is a very good approximation. In this diagram t represents the nominal full load torque of the motor.

The starting torque is indicated on the torque speed curve shown above. By overlaying the torque speed curve of a pump and a motor one can verify that the motor is producing enough accelerating torque to drive the pump to full speed as shown below. Figure 1 provides a graphical illustration of these changes. As the motor picks up speed torque decreases slightly to the lowest point shown on the curve above.

The y axis is the percent of hp and torque. The accuracy of the induction motor model has limitations and the actual torque speed characteristic is somewhat more complicated than the model predicts. Torque speed curve the torque developed by a conventional 3 phase motor depends on its speed but the relation between the two cannot be represented by a simple equation.