Somewhere in most engineering educations, there’s a class on induction motors. Students learn about shaded-pole motors, two-phase and three-phase motors, squirrel cage motors, and DC-excited … ...

For small values of motor slip, the slip is proportional to the rotor resistance, stator voltage frequency, and load torque. It's inversely proportional to the second power of supply voltage. The ...

A drive can control two main elements of a three-phase induction motor: speed and torque. To understand how a drive controls these two elements, we will take a short review of ac induction motors.

Ac drives control ac-induction motors and, like their dc counterparts, control speed, torque, and horsepower. For instance, take a simple application of a fixed-speed motor driving a fan.

Variable frequency drives Most domestic and industrial motor applications use 3-phase asynchronous induction motors, which operate at a speed that is determined by the frequency of the supply power.

Illustration of a six-pole stator. One way an hvacr service tech can determine that s/he is making good motor replacement decisions in the field is to understand the concept of motor speed so that the ...

Demand for low-cost, robust motor drives has spurred increased use of sensorless vector control of induction and BLDC motors — in everything from consumer products to industrial applications, in ...

Most domestic and industrial motor applications use 3-phase asynchronous induction motors, which operate at a speed that is determined by the frequency of the supply power.