Variable frequency drive (VFD)

Abstract

A variable frequency drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor. Other names of a VFD are variable speed drive, adjustable speed drive, adjustable frequency drive, AC drive, Mi-crodrive, and inverter. One of the most recent variable frequency drive control methods is the Vector control also known as Field oriented control, which can be implemented through direct or indirect approaches. Indirect rotor field-oriented control (IRFOC) is a very popular technique in industries due to its simple designing and structure, in compar-ison to the direct method since it requires flux and torque estimators. In this proposed project IRFOC is simulated using MATLAB/Simulink and an implementation is carried out.