Electric Motor Torque Rpm Curve

Torque at zero flow shut off torque at rated flow torque and maximum flow.

Electric motor torque rpm curve.

The engine is designed to make peak power and peak torque at very high rpm above 8 000 versus zero. Figure 1 provides a graphical illustration of these changes. The torque available at this point is called pull up torque. As the motor picks up speed torque decreases slightly to the lowest point shown on the curve above.

The honda s2000 on the other hand has decent power 265 whp but low torque at just 163 lb ft. The power band of an internal combustion gasoline automobile engine typically starts at midrange engine speeds around 4 000 rpm where maximum torque is produced and ends close to the redline after reaching maximum power between 5 000 and 6 500 rpm. Introduction of a vfd when the speed of an ac motor is controlled by a vfd hp or torque will change depending on the change in frequency. As a current flows through the electric motor a related electrical charge causes an armature to rotate.

When a pump needs a new motor three values will drive the motor selection process. Usually in rpm v. This term is used for the lowest point on the torque speed curve for an electric motor which is accelerating a load up to full speed. Speed torque gradient.

Electric motor torque vs. Thankfully in electric motors maximum torque is produced from the get go. Torque speed curves the stall torque represents the point on the graph at which the torque is a maximum but the shaft is not. That is why the shaft and frame of a 900 rpm motor are usually larger than those of an 1 800 rpm motor of the same hp.

The no load speed is the maximum output speed of the motor when no torque is applied to the output shaft.