The two most important electric motors are the ac induction motor and the permanent magnet (PM) brushless synchronous motor, also known as the brushless dc or ac servo motor. These motors have ...

Efficiency standards were once confined to integral horsepower motors but may soon apply to small motors and make certain kinds impractical to manufacture. Today, the electric motors that are of most ...

Abstract: The single phase capacitor-run motors are the ones which have the earliest and widest applications. The improvements of variable speed for them have the important meaning to improve their ...