Prior to the advent of the adjustable-speed drive (ASD), the polyphase induction motor operated as a constant-speed motor. Figure 1 shows the well-known torque and current curves versus speed for the ...

The driver is a key factor in determining a motor’s stall performance. Temperature can affect the stall torque of brushless DC motors. Tolerances on the motor parameters can significantly impact the ...

One of the most important choices engineers make while developing new platforms for machine tools is deciding which type of motor to use. Direct drive motors have always been seen as a technological ...

The following article was originally published in eeNews Automotive. It is reprinted here with permission. Today's electric drives are usually designed without transmission; at the most, they may ...

As with internal-combustion vehicles, the advantages of all-wheel drive for electric vehicles have been obvious from the start as has been the potential to provide multiple motors, ideally one for ...