Controlling the speed of induction motors have tremendous use on various fields of engineering and technology. With the advancement in semiconductor fabrication technology, energy inefficient mechanical motor drives and control systems are replaced by variable frequency drives. VFDs can also improve the motor's steady state and dynamic characters. In this paper we are discussing the speed control of the motor keeping the voltage to frequency ratio constant. Periferal Interface Controller microcontroller, Insulated Gate Bipolar Transistors are used for achieving this and the result were simulated using MATLAB & Simulink software.