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 ...

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 … ...

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.

Takashi Masuzawa, Nobumasa Isogai, Masami Fujitsuna, Rotor Speed Detection Method for an Ultra High Speed Induction Motor Utilizing Slot Harmonics, SAE Transactions, Vol. 116, SECTION 7: JOURNAL OF ...