Speed control of 3-phase induction motor using volt/hertz control for automotive application

The induction machine is the work horse of the industry. It has rugged construction and is suitable for many high power applications. It has also been a key aspect in revolutionizing the locomotive and the automotive industries. For such automotive applications speed control becomes the driving factor. Hence in this we discuss controlling the speed of 3-phase induction motor using constant volt per hertz profile. The motor is controlled using 3-phase inverter. SPWM technique is used to control the inverter voltage. Modelling of the induction motor is done in stationary reference frame and the system in simulated using MATLAB (Simulink) and hardware implementation is done for the same using TIs F28069M launch pad under varying speed and load torque conditions.