Electric Motor Torque Curve

The torque available at this point is called pull up torque.

Electric motor torque curve.

T 5252 php nr 1 where. Like pumps motors produce a torque speed curve of their own. For every motor there is a specific torque speed curve and power curve. A small mound compared to a power curve s steep incline.

In this case unless external limitations are applied the maximum torque is achieved at low rpm. 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. In imperial units the full load torque can be expressed as. In other words there is a tradeoff between how much torque a motor delivers and how fast the output shaft spins.

Nr rated rotational speed rev min rpm in metric units the rated torque can be expressed as. Motor characteristics are frequently given as two points on this graph. As the motor picks up speed torque decreases slightly to the lowest point shown on the curve above. T full load torque lb ft php rated horsepower.

Note that torque is inversely proportioal to the speed of the output shaft. In the technical data sheets the output power curve is not present. T 750 w 9 549 2000 rpm. 1 lb ft 1 355 nm torque converter.

Slowly ascending upwards before peaking and dropping back down. The torque delivered from an electrical motor producing 0 75 kw 750 w at speed 2000 rpm can be calculated as. For example the ac motor found in the tesla roadster 2008 produces near constant maximum torque from 0 to about 6000 rpm while maximum power occurs at about 10000 rpm long after torque begins to drop off. You ll all be familiar with the look of a torque curve.

In the first cartesian dial are shown the torque in nm x axis the rotation speed in rpm y1 axis the current consumption in a y2 axis the efficiency y3 axis. The graph above shows a torque speed curve of a typical d c. Electric motor power vs. Torque nm speed rpm electric motor speed vs.

Power kw torque nm example torque from an electrical motor. In this overlay the shaded area reflects the accelerating torque available from the motor to drive the pump.