When Tesla first introduced the 3-phase alternating current (AC) induction motor in 1888, he knew that his invention was more efficient and reliable than Edison's direct current (DC) motor. However, ...

A modern AC drive, also known as an adjustable frequency drive or variable speed drive, allows operators to control the speed of motors by varying the frequency and voltage supplied to the motor ...

Variable frequency drives (or VFDs) are widely used throughout industry to provide adjustable speed control of ac motors. Although modern versions are relatively simple to install and operate, VFDs ...

VFD drives, also known as variable speed drives, AC drives, or adjustable frequency drives, have become indispensable in nearly every application that utilizes induction motors. Initially designed in ...