VF Control of 3-Phase Induction Motors Using PIC16F7X7 Microcontrollers
An induction motor can run only at its rated speed when it is connected directly
to the main supply. However, many applications need variable speed operations.
This is felt the most in applications where input power is directly proportional
to the cube of motor speed. In applications like the induction motor-based centrifugal
pump, a speed reduction of 20% results in an energy savings of approximately 50%.
VF Control, 3-Phase Induction Motors, PIC16F7X7