How can a VFD can control the speed of a motor

What is the purpose of connecting a VFD to a motor

A VFD Is used to control the speed of an AC Induction motor by controlling the frequency of the motor and the frequency is directly proportional to the Speed once you increase the frequency you will also be increasing the speed of the motor. Vfd drives its main purpose is to reduce power consumption. The drive consist of the following components a rectifier, thyristor for firing purpose, a drive that changes Ac current to Dc current, A capacitor that filter ac to a constant Dc supply and a transistor that changes Dc voltage to AC current that is supplied to the motor to be used. When using vfd it’s possible to change the speed of induction motors